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W632GG6KB

Publication Release Date: Jan. 03, 2017

Revision: A06

- 45 -

8.13.2.1 READ Timing; Clock to Data Strobe relationship

Clock to Data Strobe relationship is shown in Figure 24 and is applied when the DLL is enabled and
locked.

Rising data strobe edge parameters:



DQSCK

min/max describes the allowed range for a rising data strobe edge relative to CK, CK#.



DQSCK

is the actual position of a rising strobe edge relative to CK, CK#.



QSH

describes the data strobe high pulse width.

Falling data strobe edge parameters:



QSL

describes the data strobe low pulse width.

LZ(DQS)

, t

HZ(DQS)

for preamble/postamble (see section 8.13.2.3 and Figure 26).

CK/CK#

RPRE

LZ(DQS)

min

DQSCK

(min)

DQSCK

(min)

DQSCK

(min)

DQSCK

(min)

HZ(DQS)

min

QSH

QSL

QSH

QSL

QSH

QSL

QSH

QSL

QSH

QSL

QSH

QSL

RPST

DQSCK

(max)

DQSCK

(max)

DQSCK

(max)

DQSCK

(max)

Bit 0

Bit 1

Bit 2

Bit 3

Bit 4

Bit 5

Bit 6

Bit 7

Bit 0

Bit 1

Bit 2

Bit 3

Bit 4

Bit 5

Bit 6

Bit 7

LZ(DQS)

max

HZ(DQS)

max

DQS, DQS#

Erly Strobe

DQS, DQS#

Late Strobe

RPRE

RL Measured

to this point

RPST

Notes:

1. Within a burst, rising strobe edge is not necessarily fixed to be always at t

DQSCK

(min) or t

DQSCK

(max). Instead, rising strobe

edge can vary between t

DQSCK

(min) and t

DQSCK

(max).

2. Not with standing note 1, a rising strobe edge with t

DQSCK

(max) at T(n) can not be immediately followed by a rising strobe

edge with t

DQSCK

(min) at T(n+1). This is because other timing relationships (t

QSH

, t

QSL

) exist:

if t

DQSCK

(n+1) < 0:

DQSCK

(n) < 1.0 t

- (t

QSH

min + t

QSL

min) - | t

DQSCK

(n+1) |

3. The DQS, DQS# differential output high time is defined by t

QSH

and the DQS, DQS# differential output low time is defined by

QSL

4. Likewise, t

LZ(DQS)

min and t

HZ(DQS)

min are not tied to t

DQSCK,

min (early strobe case) and t

LZ(DQS)

max and t

HZ(DQS)

max

are not tied to t

DQSCK,

max (late strobe case).

5. The minimum pulse width of read preamble is defined by t

RPRE

(min).

6. The maximum read postamble is bound by t

DQSCK

(min) plus t

QSH

(min) on the left side and t

HZDSQ

(max) on the right side.

7. The minimum pulse width of read postamble is defined by t

RPST

(min).

8. The maximum read preamble is bound by t

LZDQS

(min) on the left side and t

DQSCK

(max) on the right side.

Figure 24

– Clock to Data Strobe Relationship

Содержание W632GG6KB Series

Страница 1: ...MR1 20 8 3 2 1 DLL Enable Disable 20 8 3 2 2 Output Driver Impedance Control 21 8 3 2 3 ODT RTT Values 21 8 3 2 4 Additive Latency AL 21 8 3 2 5 Write leveling 21 8 3 2 6 Output Disable 21 8 3 3 Mode...

Страница 2: ...Violations 56 8 14 2 1 Motivation 56 8 14 2 2 Data Setup and Hold Violations 56 8 14 2 3 Strobe to Strobe and Strobe to Clock Violations 56 8 14 2 4 Write Timing Parameters 56 8 14 3 Write Data Mask 5...

Страница 3: ...Input Signals 106 10 6 7 Slew Rate Definitions for Differential Input Signals 106 10 7 DC and AC Output Measurement Levels 107 10 7 1 Output Slew Rate Definition and Requirements 107 10 7 1 1 Single...

Страница 4: ...16 1 AC Timing and Operating Condition for 11 speed grade 138 10 16 2 AC Timing and Operating Condition for 12 12I 15 15I speed grades 142 10 16 3 Timing Parameter Notes 146 10 16 4 Address Command Se...

Страница 5: ...DQS DQS pair in a source synchronous fashion 2 FEATURES Power Supply VDD VDDQ 1 5V 0 075V Double Data Rate architecture two data transfers per clock cycle Eight internal banks for concurrent operatio...

Страница 6: ...ta mask and differential strobe pairs Dynamic ODT mode for improved signal integrity and preselectable termination impedances during writes 2K Byte page size Interface SSTL_15 Packaged in WBGA 96 Ball...

Страница 7: ...125 mA Operating Burst Read Current IDD4R 280 250 235 mA Operating Burst Write Current IDD4W 250 220 200 mA Burst Refresh Current IDD5B 155 150 145 mA Self Refresh Current TOPER 0 85 C IDD6 19 19 19 m...

Страница 8: ...AP NC A12 BC BA1 VREFCA ZQ VDD VSS DQL5 VSS DQL3 VSSQ VSSQ DQU2 DQU6 VDDQ VSS VSSQ VDDQ VDD VDDQ VSSQ VSSQ VDDQ NC CKE NC VSS VDD DQU7 VSS DQU1 DMU DQL0 DQSL DQSL DQL4 RAS CAS WE BA2 A0 A3 BA0 CS VDD...

Страница 9: ...Data Mask DMU and DML are the input mask signals control the lower or upper bytes for write data Input data is masked when DMU DML is sampled HIGH coincident with that input data during a Write access...

Страница 10: ...th read data centered in write data DQSU is paired with DQSU to provide differential pair signaling to the system during read and write data transfer DDR3 SDRAM supports differential data strobe only...

Страница 11: ...DER ROW DECODER A0 A9 A11 A12 A13 CS RAS CAS WE CK CK PREFETCH REGISTER ODT CONTROL COLUMN DECODER SENSE AMPLIFIER COLUMN DECODER COLUMN DECODER SENSE AMPLIFIER COLUMN DECODER CELL ARRAY BANK 5 ROW DE...

Страница 12: ...itialization Procedure 8 2 1 Power up Initialization Sequence The following sequence is required for POWER UP and Initialization 1 Apply power RESET is recommended to be maintained below 0 2 VDD all o...

Страница 13: ...e MRS command for MR2 provide Low to BA0 and BA2 High to BA1 7 Issue MRS Command to load MR3 with all application settings To issue MRS command for MR3 provide Low to BA2 High to BA0 and BA1 8 Issue M...

Страница 14: ...ower up Initialization Sequence steps 2 to 11 3 The Reset sequence is now completed DDR3 SDRAM is ready for normal operation TIME BREAK DON T CARE Ta Tb Tc Td Te Tf Tg Th Ti Tj Tk CK CK VDD VDDQ RESET...

Страница 15: ...ss fields within the accessed mode register must be redefined when the MRS command is issued MRS command and DLL Reset do not affect array contents which mean these commands can be executed any time a...

Страница 16: ...and Rtt_Nom DISABLED prior and or after MRS command ODTLoff 1 Figure 4 tMOD Timing The mode register contents can be changed using the same command and timing requirements during normal operation as l...

Страница 17: ...1 0 1 0 1 0 1 1 0 16 2 5 2 6 2 7 2 8 2 10 2 14 2 12 2 0 1 Normal Test 0 1 Nibble Sequential Interleave 0 0 A13 CL 0 0 0 0 1 1 1 1 1 1 0 1 BC4 Fixed Reserved BA2 0 1 0 1 0 0 0 1 1 1 1 Reserved Reserve...

Страница 18: ...5 6 3 2 1 0 7 6 5 4 2 1 0 0 4 5 6 7 0 1 2 3 4 5 6 7 0 1 2 3 2 1 0 1 5 6 7 4 1 2 3 0 5 4 7 6 1 0 3 2 2 1 1 0 6 7 4 5 2 3 0 1 6 7 4 5 2 3 0 1 2 1 1 1 7 4 5 6 3 0 1 2 7 6 5 4 3 2 1 0 2 WRITE V V V 0 1 2...

Страница 19: ...be used i e Read commands or ODT synchronous operations 8 3 1 5 Write Recovery The programmed WR value MR0 bits A9 A10 and A11 is used for the auto precharge feature along with tRP to determine tDAL W...

Страница 20: ...tt_Nom settings are allowed in Write Leveling Mode MR1 A 7 1 with MR1 A 12 0 only Rtt_Nom settings of RZQ 2 RZQ 4 and RZQ 6 are allowed 4 If Rtt_Nom is used during Writes only the values RZQ 2 RZQ 4 a...

Страница 21: ...trolled by the sum of the AL and CAS Latency CL register settings Write Latency WL is controlled by the sum of the AL and CAS Write Latency CWL register settings A summary of the AL register options a...

Страница 22: ...operating temperature range ASR enable Manual SR Reference SRT BA0 A13 1 0 0 1 Reserved Reserved Reserved 1 1 1 1 0 0 1 1 1 A10 0 0 1 1 A9 0 1 0 1 Dynamic ODT off Write does not affect Rtt value Rese...

Страница 23: ...ion on page 56 8 3 3 3 Auto Self Refresh ASR and Self Refresh Temperature SRT DDR3 SDRAM must support Self Refresh operation at all supported temperatures Applications requiring Self Refresh operation...

Страница 24: ...r read synchronization 3 When MPR control is set for normal operation MR3 A 2 0 then MR3 A 1 0 will be ignored Figure 8 MR3 Definition 8 3 4 1 Multi Purpose Register MPR The Multi Purpose Register MPR...

Страница 25: ...f both CL 6 and CWL 6 DLL off mode will affect the Read data Clock to Data Strobe relationship tDQSCK but not the Data Strobe to Data relationship tDQSQ tQH Special attention is needed to line up Read...

Страница 26: ...timings from any MRS command are satisfied In addition if any ODT features were enabled in the mode registers when Self Refresh mode was entered the ODT signal must continuously be registered LOW unti...

Страница 27: ...eatures are disabled in the mode registers when Self Refresh mode was entered ODT signal can be registered LOW or HIGH 6 Wait tXS then set MR1 bit A0 to 0 to enable the DLL 7 Wait tMRD then set MR0 bi...

Страница 28: ...below the minimum operating frequency would require the use of DLL_on mode DLL_off mode transition sequence refer to section 8 7 DLL on off switching procedure on page 26 8 8 2 Frequency change during...

Страница 29: ...k frequency tCKSRX Notes 1 Applicable for both SLOW EXIT and FAST EXIT Precharge Power down 2 tAOFPD and tAOF must be satisfied and outputs High Z prior to T1 refer to ODT timing section for exact req...

Страница 30: ...ides tDQSS tDSS and tDSH specification also needs to be fulfilled One way to achieve this is to combine the actual tDQSS in the application with an appropriate duty cycle and jitter on the DQS DQS sig...

Страница 31: ...MRS command performing the exit MR1 A7 0 may also change MR1 bits of A12 A9 A6 A5 and A2 A1 Since the controller levels one rank at a time the output of other ranks must be disabled by setting MR1 bit...

Страница 32: ...If feedback is driven only on one DQ the remaining DQs must be driven low as shown in above Figure and maintained at this state through out the leveling procedure 2 MRS Load MR1 to enter write leveli...

Страница 33: ...Tb0 3 After the RTT is switched off disable Write Level Mode via MRS command see Tc2 4 After tMOD is satisfied Te1 any valid command may be registered MR commands may be issued after tMRD Td1 TIME BR...

Страница 34: ...Multi Purpose Register The resulting operation when a RD or RDA command is issued is defined by MR3 bits A 1 0 when the MPR is enabled as shown in Table 6 When the MPR is enabled only RD or RDA comma...

Страница 35: ...to 0 1 2 3 4 5 6 7 For Burst Chop 4 cases the burst order is switched on nibble base A 2 0b Burst order 0 1 2 3 A 2 1b Burst order 4 5 6 7 A 9 3 Don t care A10 AP Don t care A12 BC Selects burst chop...

Страница 36: ...order 0 1 2 3 BC4 100b Burst order 4 5 6 7 1b 11b RFU BL8 000b Burst order 0 1 2 3 4 5 6 7 BC4 000b Burst order 0 1 2 3 BC4 100b Burst order 4 5 6 7 Note Burst order bit 0 is assigned to LSB and the...

Страница 37: ...rsts out the pre defined Read Calibration Pattern Memory controller repeats these calibration reads until read data capture at memory controller is optimized After end of last MPR read burst wait unti...

Страница 38: ...Tc7 BA NOP NOP VALID 3 3 0 0 2 VALID 1 0 2 0 00 00 0 0 0 0 0 0 1 A 1 0 A 2 A 9 3 A10 AP A 11 A12 BC DQS DQS DQ RL tRP tMOD VALID 1 VALID VALID VALID VALID tMPRR tMOD Tc8 Tc9 Td NOTES 1 RD with BL8 eit...

Страница 39: ...0 0 0 0 1 A 1 0 A 2 A 9 3 A10 AP A 11 A12 BC DQS DQS DQ RL VALID 1 VALID VALID VALID VALID tMPRR Tc8 Tc9 Td T10 3 VALID VALID 0 00 VALID 0 VALID 0 VALID 0 VALID 1 RL 0 2 0 2 READ 1 TIME BREAK DON T CA...

Страница 40: ...0 A 2 A 9 3 A10 AP A 11 A12 BC DQS DQS DQ RL VALID 1 VALID VALID VALID VALID tMPRR tMOD Tc8 Tc9 Td T10 VALID VALID VALID VALID VALID 1 RL 0 2 1 4 READ 1 3 VALID 0 00 0 0 0 NOTES 1 RD with BC4 either...

Страница 41: ...0 A 2 A 9 3 A10 AP A 11 A12 BC DQS DQS DQ RL VALID 1 VALID VALID VALID VALID tMPRR tMOD Tc8 Tc9 Td T10 VALID VALID VALID VALID VALID 1 RL 0 2 0 3 READ 1 3 VALID 0 00 0 0 0 NOTES 1 RD with BC4 either b...

Страница 42: ...or the open row in all banks The bank s will be available for a subsequent row activation a specified time tRP after the PRECHARGE command is issued except in the case of concurrent auto precharge wh...

Страница 43: ...2 Dout n data out from column n 3 NOP commands are shown for ease of illustration other commands may be valid at these times 4 BL8 setting activated by either MR0 A 1 0 00 or MR0 A 1 0 01 and A12 1 d...

Страница 44: ...ime tDQSQ describes the latest valid transition of the associated DQ pins tQH describes the earliest invalid transition of the associated DQ pins Falling data strobe edge parameters tQSL describes the...

Страница 45: ...obe tRPRE RL Measured to this point tRPST Notes 1 Within a burst rising strobe edge is not necessarily fixed to be always at tDQSCK min or tDQSCK max Instead rising strobe edge can vary between tDQSCK...

Страница 46: ...2 Last data valid Dout n tRPRE tRPST NOP NOP NOP RL AL CL Dout n Dout n 1 Dout n 2 Dout n 4 Dout n 5 Dout n 6 Dout n 7 Dout n 1 Dout n 2 Dout n 4 Dout n 5 Dout n 6 Dout n 7 Dout n 1 Dout n 2 Dout n 3...

Страница 47: ...LZ DQ by measuring the signal at two different voltages The actual voltage measurement points are not critical as long as the calculation is consistent The parameters tLZ DQS tLZ DQ tHZ DQS and tHZ DQ...

Страница 48: ...cation tA tB tC tD t2 t1 tRPRE tRPRE_end tRPRE_begin VTT 0 VTT VTT Figure 27 Method for calculating tRPRE transitions and endpoints 8 13 2 5 tRPST Calculation The method for calculating differential p...

Страница 49: ...or MR0 A 1 0 01 and A12 1 during READ commands at T0 and T4 Figure 29 READ BL8 to READ BL8 T0 T1 T3 T4 T5 T6 T7 T8 T9 T10 T11 CK CK Command 3 READ Address 4 NOP NOP NOP NOP READ NOP Bank Col n DQS DQ...

Страница 50: ...0 and T4 Figure 31 READ BC4 to READ BC4 T0 T1 T3 T4 T5 T6 T7 T8 T9 T10 T11 CK CK Command 3 READ Address 4 NOP NOP NOP NOP NOP Bank Col n DQS DQS DQ 2 RL 6 Dout n Dout n 1 WL 5 tRPRE Dout n 2 Dout n 3...

Страница 51: ...nd at T0 and WRITE command at T5 Bank Col n Bank Col b READ to WRITE Command Delay RL tCCD 2 2tCK WL TIME BREAK Figure 33 READ BC4 to WRITE BC4 OTF T0 T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 CK CK Command 3 RE...

Страница 52: ...0 A 1 0 01 and A12 1 during READ command at T4 Figure 35 READ BC4 to READ BL8 OTF T0 T1 T3 T4 T5 T6 T7 T8 T9 T10 T11 CK CK Command 3 READ Address 4 NOP NOP NOP WRITE NOP DQS DQS DQ 2 RL 6 Dout n Dout...

Страница 53: ...in b 1 Din b 2 Din b 7 T16 NOP NOP NOP tRPST tWPRE 4 clocks tWR tWTR TRANSITIONING DATA DON T CARE NOTES 1 RL 6 CL 6 AL 0 WL 5 CWL 5 AL 0 2 Dout n data out from column Din b data in from column b 3 NO...

Страница 54: ...The minimum RAS cycle time tRC MIN from the previous bank activation has been satisfied Examples of Read commands followed by Precharge are show in Figure 38 and Figure 39 T0 T1 T2 T3 T4 T5 T6 T7 T8 T...

Страница 55: ...Dout n Dout n 1 Dout n 2 Dout n 3 DQS DQS DQ BL4 Operation BL8 Operation tRP AL CL 2 9 T26 NOP tRTP Bank a Row b TRANSITIONING DATA DON T CARE NOTES 1 RL 20 CL 11 AL CL 2 2 Dout n data out from colum...

Страница 56: ...on page 57 the relevant strobe edges for write burst A are associated with the clock edges T5 T5 5 T6 T6 5 T7 T7 5 T8 T8 5 Subsequent reads from that location might result in unpredictable read data...

Страница 57: ...tDSS tWPRE min tDSH tDQSS tDSH tDSH tDSH tWPST min tDQSH min tDSS tDSS tDSS tDSS tDSS tDQSL tDQSH tDQSL tDQSH tDQSL tDQSH tDQSL tDQSH tDQSL min tDQSS max Notes 1 BL8 WL 5 AL 0 CWL 5 2 Din n data in fr...

Страница 58: ...for tWPRE specification VTT 0 V t1 tWPRE tWPRE_begin t2 tWPRE_end Figure 41 Method for calculating tWPRE transitions and endpoints 8 14 5 tWPST Calculation The method for calculating differential pul...

Страница 59: ...1 0 00 or MR0 A 1 0 01 and A12 1 during WRITE command at T0 Figure 43 WRITE Burst Operation WL 5 AL 0 CWL 5 BL8 T0 T1 T5 T6 T9 T10 T11 T12 T13 T14 T15 CK CK Command 3 Address 4 DQS DQS DQ 2 Din n Din...

Страница 60: ...ts with the first rising clock edge after the last write data shown at T7 Figure 45 WRITE BC4 to READ BC4 Operation T0 T1 T2 T3 T4 T5 T6 T7 T8 T9 Tn CK CK Command 3 Address 4 DQS DQS DQ 2 Din n Din n...

Страница 61: ...ure 47 WRITE BC4 OTF to PRECHARGE Operation T0 T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 CK CK Command 3 Address 4 DQS DQS DQ 2 Din n Din n 2 Din n 3 Bank Col n WL 5 tWPRE Din n 1 tWPST 4 clocks Bank Col b T12 T...

Страница 62: ...NOP NOP NOP NOP WRITE NOP NOP NOP NOP NOP NOP NOP NOP NOP TRANSITIONING DATA DON T CARE Bank Col b Bank Col n Figure 49 WRITE BC4 to WRITE BC4 OTF T0 T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 Din n Din n 2 Din n...

Страница 63: ...CK CK Command 3 Address 4 DQS DQS DQ 2 WRITE NOP NOP NOP NOP NOP NOP NOP NOP NOP READ NOP NOP NOP NOP TRANSITIONING DATA DON T CARE Bank Col b Bank Col n 4 clocks Figure 51 WRITE BC4 to READ BC4 BL8...

Страница 64: ...IONING DATA DON T CARE Bank Col b Bank Col n Din n 7 Din b 1 Din b 2 Din b tWR WL 5 tCCD Figure 53 WRITE BL8 to WRITE BC4 OTF T0 T1 T2 T3 T4 T5 T6 T7 T8 T9 T10 Din n Din n 2 Din n 3 WL 5 tWPRE Din n 1...

Страница 65: ...poned during operation of the DDR3 SDRAM meaning that at no point in time more than a total of 8 Refresh commands are allowed to be postponed In case that 8 Refresh commands are postponed in a row the...

Страница 66: ...ease Date Jan 03 2017 Revision A06 66 tRFC 8 REF Commands pulled in tREFI 9 x tREFI t Figure 56 Postponing Refresh Commands Example tRFC 8 REF Commands pulled in tREFI 9 x tREFI t Figure 57 Pulling in...

Страница 67: ...nd that first Write operation or first Write Leveling Activity may not occur earlier than 512 nCK after exit from Self Refresh The DRAM initiates a minimum of one Refresh command internally within tCK...

Страница 68: ...m of one extra refresh command before it is put back into Self Refresh Mode T0 T1 T2 Ta0 Tb0 Tc0 Tc1 Td0 CK CK Command Tf0 Te0 VALID VALID VALID NOP SRE NOP NOP 1 VALID 2 VALID 3 SRX VALID VALID tRP O...

Страница 69: ...e defined as tCPDED CKE_low will result in deactivation of command and address receivers after tCPDED has expired Table 7 Power Down Entry Definitions Status of DRAM MRS bit A12 DLL PD Exit Relevant P...

Страница 70: ...ining open after completion of the precharge command Figure 59 Active Power Down Entry and Exit Timing Diagram T0 T1 Ta0 Ta1 Ta2 Ta3 Ta4 Ta5 Ta6 Ta7 Ta8 CK CK Command Address DQS DQS DQ BL8 Dout b Dou...

Страница 71: ...CARE Power Down Entery DQS DQS DQ BL8 DQ BC4 Start Internal Precharge A10 CKE Note 1 tWR is programmed through MR0 Figure 61 Power Down Entry after Write with Auto Precharge T0 T1 Ta0 Ta1 Ta2 Ta3 Ta4...

Страница 72: ...ower Down Mode tPD Command CKE TIME BREAK DON T CARE VALID Figure 63 Precharge Power Down Fast Exit Mode Entry and Exit T0 T1 T2 Ta0 Tb0 Tb1 Tc0 CK CK NOP NOP tIS Ta1 NOP NOP NOP VALID VALID tIH tIS t...

Страница 73: ...S tCPDED Command Address VALID NOP T3 VALID CKE CK TIME BREAK DON T CARE VALID VALID Figure 65 Refresh Command to Power Down Entry T0 T1 T2 Ta0 CK ACTIVE NOP Ta1 NOP VALID VALID tPD tACTPDEN tIS tCPDE...

Страница 74: ...N tIS tCPDED Command Address VALID NOP T3 VALID CKE CK TIME BREAK DON T CARE VALID VALID Figure 67 Precharge Precharge all Command to Power Down Entry T0 T1 Ta0 Tb0 MRS NOP Tb1 NOP VALID VALID tPD tMR...

Страница 75: ...E intensive operations for example repeated PD Exit Refresh PD Entry sequences the number of clock cycles between PD Exit and PD Entry may be insufficient to keep the DLL updated Therefore the followi...

Страница 76: ...the Refresh command is satisfied This means CKE can not be registered low twice within a tRFC min window A detailed example of Case 3 is shown in Figure 71 T0 T1 T2 Ta1 CK CK REF NOP Tb0 NOP NOP NOP t...

Страница 77: ...CK for all speed bins assuming the maximum sensitivities specified in the Output Driver Voltage and Temperature Sensitivity and ODT Voltage and Temperature Sensitivity tables The appropriate interval...

Страница 78: ...rmination must be disabled via the ODT signal or MRS during the calibration procedure 3 All devices connected to the DQ bus should be high impedance during the calibration procedure Figure 72 ZQ Calib...

Страница 79: ...ODT feature is shown in Figure 73 VDDQ 2 Swtich ODT RTT To other circuitry like RCV DQ DQS DM Figure 73 Functional Representation of ODT The switch is enabled by the internal ODT control logic which u...

Страница 80: ...Symbol Parameter DDR3 1333 DDR3 1600 DDR3 1866 Unit ODTLon ODT turn on Latency WL 2 CWL AL 2 nCK ODTLoff ODT turn off Latency WL 2 CWL AL 2 8 19 2 2 Timing Parameters In synchronous ODT mode the follo...

Страница 81: ...CARE Figure 74 Synchronous ODT Timing AL 3 CWL 5 ODTLon AL CWL 2 6 ODTLoff AL CWL 2 6 T0 T1 T2 T4 CK CK T5 T3 ODT T6 T7 tAONmin T8 T9 T10 T12 T13 T14 T15 T11 tAONmax Rtt_Nom tAOFmin tAOFmax CKE DRAM_...

Страница 82: ...timing may apply If DRAM stops driving late i e tHZ is late then DRAM complies with tAONmax timing Note that ODT may be disabled earlier before the Read and enabled later after the Read than shown in...

Страница 83: ...rite command WR WRA WRS4 WRS8 WRAS4 WRAS8 is registered and if Dynamic ODT is enabled the termination is controlled as follows A latency ODTLcnw after the write command termination strength Rtt_WR is...

Страница 84: ...fter Write BL 4 ODTH4 Registering Write with ODT high ODT registered low ODTH4 4 tCK avg Minimum ODT high time after Write BL 8 ODTH8 Registering Write with ODT high ODT registered low ODTH4 6 tCK avg...

Страница 85: ...ODTLcwn4 tADCmax tADCmin tAOFmax tAOFmin WL WRS4 NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP NOP RTT DQ DQS DQS Rtt_WR Rtt_Nom TRANSITIONING DON T CARE NOTES Example for BC4 via MRS or OTF AL 0 CW...

Страница 86: ...gistered low at T5 would also be legal Figure 78 Dynamic ODT Behavior without write command AL 0 CWL 5 T0 T1 T2 T4 CK CK DON T CARE T5 T3 ODT T6 T7 T8 T9 T10 T11 NOP TRANSITIONING tAOFmin Address Rtt_...

Страница 87: ...red low at T5 would also be legal Figure 80 Dynamic ODT Behavior with ODT pin being asserted together with write command for a duration of 6 clock cycles example for BC4 via MRS or OTF AL 0 CWL 5 T0 T...

Страница 88: ...resistance is fully on tAONPDmin and tAONPDmax are measured from ODT being sampled high Minimum RTT turn off time tAOFPDmin is the point in time when the devices termination circuit starts to turn of...

Страница 89: ...in starts with the clock cycle where CKE is first registered low The transition period begins with the starting point of tANPD and terminates at the end point of tCPDED min as shown in Figure 83 If th...

Страница 90: ...Dmin RTT tAOFPDmax NOP NOP NOP NOP NOP NOP tCPDED tCPDEDmin tANPD ODTLoff PD entry transition period tAOFPDmax ODTLoff tAOFmin ODTLoff tAOFmax PD entry transition period tAOFPDmin CKE RTT Sync or asyn...

Страница 91: ...NOP NOP REF NOP RTT RTT tAOFPDmax Last sync ODT RTT Sync or async ODT RTT First async ODT tAOFPDmin ODTLoff tAOFPDmax tAOFPDmin tRFC min ODTLoff tAOFPDmin PD entry transition period tCPDEDmin tANPD OD...

Страница 92: ...ertion during the transition period may result in an RTT change as early as the smaller of tAOFPDmin and ODTLoff tCK avg tAOFmin and as late as the larger of tAOFPDmax and ODTLoff tCK avg tAOFmax See...

Страница 93: ...ansition periods for PD exit and PD entry may overlap In this case the response of the DDR3 SDRAMs RTT to a change in ODT state at the input may be synchronous OR asynchronous from the start of the PD...

Страница 94: ...BC4 on the Fly WRS4 H H L H L L BA RFU L L CA 5 Write BL8 on the Fly WRS8 H H L H L L BA RFU H L CA 5 Write with Auto Precharge Fixed BL8 or BC4 WRA H H L H L L BA RFU V H CA 5 Write with Auto Precha...

Страница 95: ...s described in this table The ODT function is not available during Self Refresh 8 Self Refresh Exit is asynchronous 9 VREF Both VREFDQ and VREFCA must be maintained during Self Refresh operation VREFD...

Страница 96: ...n of CKE H L or CKE L H the CKE level must be maintained until 1nCK prior to tCKEmin being satisfied at which time CKE may transition again 7 DESELECT and NOP are defined in the Command Truth Table 8...

Страница 97: ...From any state RESET ZQCL MRS SRE SRX REF PDE PDX ACT ZQCL ZQCS PDX PDE Write Read Read A Write A Write A Read A PRE PREA PRE PREA PRE PREA Write A Read Write Write Read CKE_L CKE_L CKE_ L Automatic s...

Страница 98: ...otes 1 Operating Temperature TOPER is the case surface temperature on the center top side of the DRAM For measurement conditions please refer to the JEDEC document JESD51 2 2 During operation the DRAM...

Страница 99: ...ad presented by a production tester System designers should use IBIS or other simulation tools to correlate the timing reference load to a system environment Manufacturers correlate to their productio...

Страница 100: ...or ADD CMD inputs VREFCA DC 0 49 x VDD 0 51 x VDD 0 49 x VDD 0 51 x VDD V 3 4 Notes 1 For input only pins except RESET VREF VREFCA DC 2 See section 10 12 Overshoot and Undershoot Specifications on pag...

Страница 101: ...V 1 2 8 Reference Voltage for DQ DM inputs VREFDQ DC 0 49 x VDD 0 51 x VDD 0 49 x VDD 0 51 x VDD V 3 4 Notes 1 VREF VREFDQ DC 2 See section 10 12 Overshoot and Undershoot Specifications on page 121 3...

Страница 102: ...C tolerance and VREF AC noise limits The voltage levels for setup and hold time measurements VIH AC VIH DC VIL AC and VIL DC are dependent on VREF VREF shall be understood as VREF DC as defined in Fig...

Страница 103: ...CK CK use VIH CA AC VIL CA AC of ADD CMD and VREFCA for DQSL DQSL DQSU DQSU use VIH DQ AC VIL DQ AC of DQs and VREFDQ if a reduced AC high or AC low level is used for a signal group then the reduced...

Страница 104: ...s VIH DQ AC VIL DQ AC for DQ signals in every half cycle preceding and following a valid transition Note that the applicable ac levels for ADD CMD and DQ s might be different per speed bin etc E g if...

Страница 105: ...For single ended components of differential signals the requirement to reach VSELmax VSEHmin has no bearing on timing but adds a restriction on the common mode characteristics of these signals 10 6 5...

Страница 106: ...le Ended Input Signals See section 10 16 4 Address Command Setup Hold and Derating on page 149 for single ended slew rate definitions for address and command signals See section 10 16 5 Data Setup Hol...

Страница 107: ...VTT VDDQ 2 at each of the differential outputs 10 7 1 Output Slew Rate Definition and Requirements The slew rate definition depends if the signal is single ended or differential For the relevant AC o...

Страница 108: ...e 27 and Figure 94 Table 27 Single ended Output Slew Rate Definition Description Measured Defined by from to Single ended output slew rate for rising edge VOL AC VOH AC VOH AC VOL AC TRse Single ended...

Страница 109: ...28 Differential Output Slew Rate Definition Description Measured Defined by from to Differential output slew rate for rising edge VOL DIFF AC VOH DIFF AC VOH DIFF AC VOL DIFF AC TRdiff Differential o...

Страница 110: ...elected via MR1 settings RON34 RZQ 7 nominal 34 3 10 with nominal RZQ 240 RON40 RZQ 6 nominal 40 0 10 with nominal RZQ 240 The individual pull up and pull down resistors RONPu and RONPd are defined as...

Страница 111: ...1 2 3 VOMDC 0 5 VDDQ 0 9 1 0 1 1 RZQ 6 1 2 3 VOHDC 0 8 VDDQ 0 6 1 0 1 1 RZQ 6 1 2 3 Mismatch between pull up and pull down MMPuPd VOMDC 0 5 VDDQ 10 10 1 2 4 Notes 1 The tolerance limits are specified...

Страница 112: ...Driver Sensitivity Definition MIN MAX UNIT RONPU VOHDC 0 6 dRONdTH T dRONdVH V 1 1 dRONdTH T dRONdVH V RZQ 7 RON VOMDC 0 9 dRONdTM T dRONdVM V 1 1 dRONdTM T dRONdVM V RZQ 7 RONPD VOLDC 0 6 dRONdTL T...

Страница 113: ...d DQS DQS pins A functional representation of the on die termination is shown in Figure 97 The individual pull up and pull down resistors RTTPu and RTTPd are defined as follows RTTPu Out Out DDQ I V V...

Страница 114: ...sitivity 3 The tolerance limits are specified under the condition that VDDQ VDD and that VSSQ VSS 4 Measurement definition for RTT Apply VIH AC to pin under test and measure current I VIH AC then appl...

Страница 115: ...SFPUPD 1 2 3 4 5 RTT60PU120 VOMDC 0 5 VDDQ 0 9 1 0 1 1 RZQ TISFPUPD 1 2 3 4 5 RTT40PU80 VOHDC 0 8 VDDQ 0 6 1 0 1 1 RZQ TISFPUPD 1 2 3 4 5 RTT30PU60 RTT20PU40 Notes 1 TISFPUPD Termination Impedance Sca...

Страница 116: ...DTLon Extrapolated point at VSSQ Figure 99 tAONPD Rising edge of CK CK with ODT being first registered high Extrapolated point at VSSQ Figure 100 tAOF Rising edge of CK CK defined by the end point of...

Страница 117: ...at VSSQ DQ DM DQS DQS Begin point Rising edge of CK CK defined by the end point of ODTL on VTT VSSQ Figure 99 Definition of tAON CK CK tAONPD VSSQ VSW2 VSW1 TSW1 TSW2 End point Extrapolated point at V...

Страница 118: ...Q DM DQS DQS Begin point Rising edge of CK CK defined by the end point of ODTLoff VTT VSSQ VRtt_Nom Figure 101 Definition of tAOF CK CK tAOFPD VSW2 VSW1 TSW1 TSW2 End point Extrapolated point at VRtt_...

Страница 119: ...polated point at VRtt_Nom DQ DM DQS DQS Begin point Rising edge of CK CK defined by the end point of ODTLcnw VRtt_Nom tADC TSW1 TSW2 End point Extrapolated point at VRtt_WR Begin point Rising edge of...

Страница 120: ...pF 2 3 11 Input output capacitance of ZQ signal CZQ 3 3 3 pF 2 3 12 Notes 1 Although the DM signals have different functions the loading matches DQ and DQS 2 This parameter is not subject to producti...

Страница 121: ...above VDD 0 4 0 33 0 28 V nS Maximum undershoot area below VSS 0 4 0 33 0 28 V nS 10 12 2 AC Overshoot Undershoot Specification for Clock Data Strobe and Mask pins Applies to CK CK DQ DQS DQS DM PARA...

Страница 122: ...e using one merged power layer in Module PCB For IDD and IDDQ measurements the following definitions apply 0 and LOW is defined as VIN VILAC max 1 and HIGH is defined as VIN VIHAC min MID LEVEL is def...

Страница 123: ...load condition may be different from above Figure 105 Measurement Setup and Test Load for IDD and IDDQ optional Measurements Application specific memory channel environment Channel IO Power simulation...

Страница 124: ...d in Mode Registers 2 ODT Signal toggling according to Table 43 Pattern Details see Table 43 IDDQ2NT Precharge Standby ODT IDDQ Current Same definition like for IDD2NT however measuring IDDQ current i...

Страница 125: ...ure Range SRT Normal 5 CKE Low External clock Off CK and CK LOW CL see Table 38 BL 8 1 AL 0 CS Command Address Bank Address Data IO MID LEVEL DM stable at 0 Bank Activity Self Refresh operation Output...

Страница 126: ...1 1 0 0 0 0 0 F 0 1 nRC 1 2 D D 1 0 0 0 0 0 0 0 0 F 0 1 nRC 3 4 D D 1 1 1 1 0 0 0 0 0 F 0 Repeat pattern nRC 1 4 until nRC nRAS 1 truncate if necessary 1 nRC nRAS PRE 0 0 1 0 0 0 0 0 0 F 0 Repeat patt...

Страница 127: ...1 1 1 1 0 0 0 0 0 F 0 Repeat pattern nRC 1 4 until nRC nRCD 1 truncate if necessary 1 nRC nRCD RD 0 1 0 1 0 0 0 0 0 F 0 00110011 Repeat pattern nRC 1 4 until nRC nRAS 1 truncate if necessary 1 nRC nR...

Страница 128: ...Sub Loop 0 use BA 2 0 7 instead Notes 1 DM must be driven LOW all the time DQS DQS are MID LEVEL 2 DQ signals are MID LEVEL Table 43 IDD2NT and IDDQ2NT Measurement Loop Pattern1 CK CK CKE Sub Loop Cyc...

Страница 129: ...Commands otherwise MID LEVEL 2 Burst Sequence driven on each DQ signal by Read Command Outside burst operation DQ signals are MID LEVEL Table 45 IDD4W Measurement Loop Pattern1 CK CK CKE Sub Loop Cyc...

Страница 130: ...D 1 0 0 0 0 0 0 0 0 0 0 3 4 D D 1 1 1 1 0 0 0 0 0 F 0 5 8 Repeat cycles 1 4 but BA 2 0 1 9 12 Repeat cycles 1 4 but BA 2 0 2 13 16 Repeat cycles 1 4 but BA 2 0 3 17 20 Repeat cycles 1 4 but BA 2 0 4 2...

Страница 131: ...9 nFAW 4 nRRD D 1 0 0 0 0 7 0 0 0 F 0 Assert and repeat above D Command until 2 nFAW 1 if necessary 10 2 nFAW 0 ACT 0 0 1 1 0 0 0 0 0 F 0 2 nFAW 1 RDA 0 1 0 1 0 0 0 1 0 F 0 00110011 2 nFAW 2 D 1 0 0 0...

Страница 132: ...ive Power Down Current 55 60 65 mA IDD4R Operating Burst Read Current 235 250 280 mA IDD4W Operating Burst Write Current 200 220 250 mA IDD5B Burst Refresh Current 145 150 155 mA IDD6 Self Refresh Cur...

Страница 133: ...onsecutive rising edge tCK abs is not subject to production test Definition for tCH avg and tCL avg tCH avg is defined as the average high pulse width as calculated across any consecutive 200 high pul...

Страница 134: ...on 15 15I Parameter Symbol Min Max Maximum operating frequency using maximum allowed settings for Sup_CL and Sup_CWL fCKMAX 667 MHz Internal read command to first data tAA 13 5 13 125 9 20 nS ACT to i...

Страница 135: ...L 5 tCK AVG 2 5 3 3 nS 1 2 3 4 7 CWL 6 7 8 tCK AVG Reserved nS 5 CL 7 CWL 5 tCK AVG Reserved nS 5 CWL 6 tCK AVG 1 875 2 5 nS 1 2 3 4 7 Optional 9 nS 5 CWL 7 8 tCK AVG Reserved nS 5 CL 8 CWL 5 tCK AVG...

Страница 136: ...ite delay time tRCD 13 91 nS PRE command period tRP 13 91 nS ACT to ACT or REF command period tRC 47 91 nS ACT to PRE command period tRAS 34 9 tREFI nS CL 6 CWL 5 tCK AVG 2 5 3 3 nS 1 2 3 4 8 CWL 6 7...

Страница 137: ...User must program a different value 6 Any DDR3 1333 speed bin also supports functional operation at lower frequencies as shown in the table which are not subject to Production Tests but verified by De...

Страница 138: ...itter during DLL locking period 50 50 pS tJIT cc Cycle to Cycle Period Jitter 120 pS tJIT cc lck Cycle to Cycle Period Jitter during DLL locking period 100 pS tJIT duty Clock Duty Cycle Jitter Already...

Страница 139: ...high time 0 4 tCK avg 18 23 tQSL DQS DQS differential output low time 0 4 tCK avg 18 23 tWPRE DQS DQS differential WRITE Preamble 0 9 tCK avg 46 tWPST DQS DQS differential WRITE Postamble 0 3 tCK avg...

Страница 140: ...200 pS 9 41 42 tIS AC125 Command and Address setup time to CK CK Base specification 150 pS 9 41 VREF 1 V nS 275 pS 9 41 42 tIH DC100 Command and Address hold time from CK CK Base specification 100 pS...

Страница 141: ...command to Power Down entry BC4MRS Min WL 2 roundup tWR min tCK avg Max nCK 20 tWRAPDEN Timing of WRA command to Power Down entry BC4MRS Min WL 2 WR 1 Max nCK 19 tREFPDEN Timing of REF command to Powe...

Страница 142: ...DLL locking period 60 60 70 70 pS tJIT cc Cycle to Cycle Period Jitter 140 160 pS tJIT cc lck Cycle to Cycle Period Jitter during DLL locking period 120 140 pS tJIT duty Clock Duty Cycle Jitter Alrea...

Страница 143: ...ITE Preamble 0 9 0 9 tCK avg 46 tWPST DQS DQS differential WRITE Postamble 0 3 0 3 tCK avg 46 tDQSCK DQS DQS rising edge output access time from rising CK CK 225 225 255 255 pS 17 23 tLZ DQS DQS and D...

Страница 144: ...CK CK Base specification 120 140 pS 9 41 VREF 1 V nS 220 240 pS 9 41 42 tIPW Control address and control input pulse width for each input 560 620 pS 10 Calibration Timing tZQinit Power up and RESET c...

Страница 145: ...tWRPDEN Timing of WR command to Power Down entry BC4MRS Min WL 2 roundup tWR min tCK avg Max nCK 20 tWRAPDEN Timing of WRA command to Power Down entry BC4MRS Min WL 2 WR 1 Max nCK 19 tREFPDEN Timing o...

Страница 146: ...evice will support tnRP RU tRP tCK avg 9 as long as the input clock jitter specifications are met i e Precharge command at Tm and Active command at Tm 9 is valid even if Tm 9 Tm is less than 13 5nS du...

Страница 147: ...DEN it is necessary to round up tWR min tCK avg to the next integer value 21 The maximum read preamble is bound by tLZ DQS min on the left side and tDQSCK max on the right side See Figure 24 READ Timi...

Страница 148: ...understood that the relationship between the average timing tCK avg and the respective absolute instantaneous timing tCK abs holds all times 38 tCH abs is the absolute instantaneous clock high pulse w...

Страница 149: ...ignal is earlier than the nominal slew rate line anywhere between shaded DC to VREF DC region the slew rate of a tangent line to the actual signal from the DC level to VREF DC level is used for derati...

Страница 150: ...9 18 1 10 7 2 15 8 23 24 0 5 35 40 35 40 35 40 27 32 19 24 11 16 2 6 5 10 0 4 62 60 62 60 62 60 54 52 46 44 38 36 30 26 22 10 Table 50 Derating values DDR3 1333 1600 tIS tIH AC DC based Alternate AC15...

Страница 151: ...AC125 Threshold VIH AC VREF DC 125mV VIL AC VREF DC 125mV CK CK Differential Slew Rate 4 0 V nS 3 0 V nS 2 0 V nS 1 8 V nS 1 6 V nS 1 4 V nS 1 2 V nS 1 0 V nS tIS tIH tIS tIH tIS tIH tIS tIH tIS tIH t...

Страница 152: ...to AC region nominal slew rate VREF to AC region tVAC TF TR Setup Slew Rate Falling Signal VREF DC VIL AC max TF Setup Slew Rate Rising Signal VIH AC min VREF DC TR tDS tDH tDS tDH Note Clock and Stro...

Страница 153: ...gion nominal slew rate DC to VREF region TF TR tDS tDH tDS tDH Note Clock and Strobe are drawn on a different time scale Hold Slew Rate Rising Signal VREF DC VIL DC max TR Hold Slew Rate Falling Signa...

Страница 154: ...nal line nominal line tVAC tVAC Setup Slew Rate Rising Signal tangent line VIH AC min VREF DC TR Setup Slew Rate Falling Signal tangent line VREF DC VIL AC max TF tIS tIH tIS tIH tDS tDH tDS tDH Note...

Страница 155: ...Signal tangent line VREF DC VIL DC max TR DC to VREF region tangent line nominal line Hold Slew Rate Falling Signal tangent line VIH DC min VREF DC TF tIS tIH tIS tIH tDS tDH tDS tDH Note Clock and S...

Страница 156: ...as the slew rate between the last crossing of VIH DC min and the first crossing of VREF DC see Figure 108 If the actual signal is always later than the nominal slew rate line between shaded DC level t...

Страница 157: ...Differential Slew Rate 8 0 V nS 7 0 V nS 6 0 V nS 5 0 V nS 4 0 V nS 3 0 V nS 2 0 V nS 1 8 V nS 1 6 V nS 1 4 V nS 1 2 V nS 1 0 V nS tDS tDH tDS tDH tDS tDH tDS tDH tDS tDH tDS tDH tDS tDH tDS tDH tDS t...

Страница 158: ...ddd 0 15 0 10 0 20 0 15 0 80 BSC 0 80 BSC 6 40 BSC 12 00 BSC 1 20 0 40 0 50 13 10 9 10 9 00 13 00 8 90 12 90 0 40 0 25 D eE E1 eD D1 2 3 7 8 9 E A B C D E F G H J K L M N P R C ccc C A C aaa B C bbb...

Страница 159: ...ove VIH AC below VIL AC for valid DQ transition spec Table 57 A03 Dec 09 2013 11 Added block diagram 7 134 135 137 Added CL 7 CWL 6 support for DDR3 1600 and DDR3 1333 speed bins 5 7 98 122 132 135 14...

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