manualshive.com logo in svg

National Semiconductor DP83816AVNG, Руководство пользователя

Микросхема National Semiconductor DP83816AVNG является высококачественным контроллером Ethernet. Для полноценного использования функционала устройства необходимо загрузить руководство пользователя. Бесплатно скачать его можно на manualshive.com. Получите доступ к детальной информации о продукте для оптимального его использования.

Поделиться
Скачать
background image

3.0 Functional Description 

(Continued)

16

 www.national.com

DP83816

3.4 Physical Layer

The DP83816 has a full featured physical layer device with

integrated PMD sub-layers to support both 10BASE-T and

100BASE-TX Ethernet protocols. The physical layer is

designed for easy implementation of 10/100 Mb/s Ethernet

home or office solutions. It interfaces directly to twisted pair

media via an external transformer. The physical layer

utilizes on chip Digital Signal Processing (DSP) technology

and digital PLLs for robust performance under all operating

conditions, enhanced noise immunity, and lower external

component count when compared to analog solutions.

3.4.1 Auto-Negotiation

The Auto-Negotiation function provides a mechanism for

exchanging configuration information between two ends of

a link segment and automatically selecting the highest

performance mode of operation supported by both devices.

Fast Link Pulse (FLP) Bursts provide the signalling used to

communicate Auto-Negotiation abilities between two

devices at each end of a link segment. For further detail

regarding Auto-Negotiation, refer to Clause 28 of the IEEE

802.3u specification. The DP83816 supports four different

Ethernet protocols (10 Mb/s Half Duplex, 10 Mb/s Full

Duplex, 100 Mb/s Half Duplex, and 100 Mb/s Full Duplex),

so the inclusion of Auto-Negotiation ensures that the

highest performance protocol will be selected based on the

advertised ability of the Link Partner. The Auto-Negotiation

function within the DP83816 is controlled by internal

register access. Auto-Negotiation will be set at power-

up/reset, and also when a link status (up/valid) change

occurs.

3.4.2 Auto-Negotiation Register Control

When Auto-Negotiation is enabled, the DP83816 transmits

the abilities programmed into the Auto-Negotiation

Advertisement register (ANAR) via FLP Bursts. Any

combination of 10 Mb/s, 100 Mb/s, Half-Duplex, and Full

Duplex modes may be selected. The default setting of bits

[8:5] in the ANAR and bit 12 in the BMCR register are

determined at power-up.
The BMCR provides software with a mechanism to control

the operation of the DP83816. Bits 1 & 2 of the PHYSTS

register are only valid if Auto-Negotiation is disabled or

after Auto-Negotiation is complete. The Auto-Negotiation

protocol compares the contents of the ANLPAR and ANAR

registers and uses the results to automatically configure to

the highest performance protocol common to the local and

far-end port. The results of Auto-Negotiation may be

accessed in register C0h (PHYSTS), bit 4: Auto-

Negotiation Complete, bit 2: Duplex Status and bit 1:

Speed Status.
Auto-Negotiation Priority Resolution:
— (1) 100BASE-TX Full Duplex (Highest Priority)
— (2) 100BASE-TX Half Duplex
— (3) 10BASE-T Full Duplex
— (4) 10BASE-T Half Duplex (Lowest Priority)
The Basic Mode Control Register (BMCR) provides control

for enabling, disabling, and restarting the Auto-Negotiation

process. When Auto-Negotiation is disabled the Speed

Selection bit in the BMCR (bit 13) controls switching

between 10 Mb/s or 100 Mb/s operation, and the Duplex

Mode bit (bit 8) controls switching between full duplex

operation and half duplex operation. The Speed Selection

and Duplex Mode bits have no effect on the mode of

operation when the Auto-Negotiation Enable bit (bit 12) is

set.
The Basic Mode Status Register (BMSR) indicates the set

of available abilities for technology types, Auto-Negotiation

ability, and Extended Register Capability. These bits are

permanently set to indicate the full functionality of the

DP83816 (only the 100BASE-T4 bit is not set since the

DP83816 does not support that function).
The BMSR also provides status on:
— Auto-Negotiation complete (bit 5)
— Link Partner advertising that a remote fault has occurred 

(bit 4)

— Valid link has been established (bit 2)
— Support for Management Frame Preamble suppression 

(bit 6)

The Auto-Negotiation Advertisement Register (ANAR)

indicates the Auto-Negotiation abilities to be advertised by

the DP83816. All available abilities are transmitted by

default, but any ability can be suppressed by writing to the

ANAR. Updating the ANAR to suppress an ability is one

way for a management agent to change (force) the

technology that is used.
The Auto-Negotiation Link Partner Ability Register

(ANLPAR) is used to receive the base link code word as

well as all next page code words during the negotiation.

Furthermore, the ANLPAR will be updated to either 0081h

or 0021h for parallel detection to either 100 Mb/s or 10

Mb/s respectively.
The Auto-Negotiation Expansion Register (ANER)

indicates additional Auto-Negotiation status. The ANER

provides status on:
— Parallel Detect Fault occurrence (bit 4)
— Link Partner support of the Next Page function (bit 3)
— DP83816 support of the Next Page function (bit 2). The 

DP83816 supports the Next Page function.

— Current page being exchanged by Auto-Negotiation has 

been received (bit1)

— Link Partner support of Auto-Negotiation (bit 0)

3.4.3 Auto-Negotiation Parallel Detection

The DP83816 supports the Parallel Detection function as

defined in the IEEE 802.3u specification. Parallel Detection

requires both the 10 Mb/s and 100 Mb/s receivers to

monitor the receive signal and report link status to the

Auto-Negotiation function. Auto-Negotiation uses this

information to configure the correct technology in the event

that the Link Partner does not support Auto-Negotiation yet

is transmitting link signals that the 100BASE-TX or

10BASE-T PMAs (Physical Medium Attachments)

recognize as valid link signals.
If the DP83816 completes Auto-Negotiation as a result of

Parallel Detection, bits 5 and 7 within the ANLPAR register

will be updated to reflect the mode of operation present in

the Link Partner. Note that bits 4:0 of the ANLPAR will also

be set to 00001 based on a successful parallel detection to

indicate a valid 802.3 selector field. Software may

determine that negotiation completed via Parallel Detection

by reading the ANER (98h) register with bit 0, Link Partner

Auto-Negotiation Able bit, being reset to a zero, once the

Auto-Negotiation Complete bit, bit 5 of the BMSR (84h)

register is set to a one. If configured for parallel detect

Содержание DP83816AVNG

Страница 1: ...DP83816 DP83816 10 100 Mb s Integrated PCI Ethernet Media Access Controller and Physical Layer MacPhyter II Literature Number SNLS164D...

Страница 2: ...ow including directed packets Magic Packet VLAN packets ARP packets pattern match packets and Phy status change Clkrun function for PCI Mobile Design Guide Virtual LAN VLAN and long frame support Supp...

Страница 3: ...ion Identification Register 30 4 1 2 Configuration Command and Status Register 31 4 1 3 Configuration Revision ID Register 32 4 1 4 Configuration Latency Timer Register 33 4 1 5 Configuration I O Base...

Страница 4: ...ical Layer Block Diagram 15 Figure 3 5 LED Loading Example 17 Figure 3 6 100BASE TX Transmit Block Diagram 19 Figure 3 7 Binary to MLT 3 conversion 20 Figure 3 8 100 M bs Receive Block Diagram 22 Figu...

Страница 5: ...D10 AD9 VSS AD8 AD19 AD20 AD21 AD22 AD23 IDSEL VSS PCIVDD NC PCIVDD NC VSS PCIVDD CBEN3 AD24 AD25 AD26 CBEN0 VSS AUXVDD RESERVED VREF PCIVDD AD29 AD31 VSS REQN GNTN RSTN INTAN AD28 PCICLK AD30 PMEN CL...

Страница 6: ...t is de asserted before the transaction is in its final phase As a target the device monitors this signal before decoding the address to check if the current transaction is addressed to it GNTN 63 I G...

Страница 7: ...ower Management Event Clock Run Function This pin is a dual function pin The function of this pin is determined by the CLKRUN_EN bit 0 of the CLKRUN Control and Status register CCSR Default operation...

Страница 8: ...access these signals become part of the ROM address RXDV MA11 15 I O Receive Data Valid Indicates that the external PMD is presenting recovered and decoded nibbles on the RXD signals and that RXCLK i...

Страница 9: ...ulses for Auto Negotiation purposes 100BASE TX Reception of ANSI X3T12 compliant scrambled MLT 3 data The DP83816 will automatically configure this common input buffer to accept the proper signal type...

Страница 10: ...duration of approximately 50 ms LED100N MA2 144 O 100 Mb s Link This pin is an output indicating the 100 Mb s Link status This pin is driven low to indicate Good Link status for 100 Mb s operation and...

Страница 11: ...6 37 84 85 124 125 126 No Connect RESERVED 41 50 127 These pins are reserved and cannot be connected to any external logic or net REGEN 48 Reserved and cannot be connected to any external logic or net...

Страница 12: ...ngle port version of the 3 3V DsPhyterII Internal memory consists of one 0 5 KB and two 2 KB SRAM blocks Figure 3 1 DP83816 Functional Block Diagram MAC BIU Interface SRAM 25 MHz Clk MII RX MII TX MII...

Страница 13: ...lude configuration control serial EEPROM access with auto configuration load interrupt control power management control with support for PME or CLKRUN function 3 1 1 1 Byte Ordering The DP83816 can be...

Страница 14: ...gure the DP83816 to maximize efficiency Architecture of the specific system s buffer memory as well as the nature of network traffic will determine the most suitable configuration of packet descriptor...

Страница 15: ...external EEPROM The EEPROM interface provides the ability for the DP83816 to read from and write data to an external serial EEPROM device The DP83816 will auto load values from the EEPROM to certain f...

Страница 16: ...B 5B DECODER DESCRAMBLER SERIAL TO PARALLEL NRZI TO NRZ DECODER MLT 3 TO 10 100 COMMON AUTO NEGOTIATION STATE MACHINE FAR END FAULT STATE MACHINE REGISTERS AUTO 100BASE X 10BASE T MII BASIC MODE PCS C...

Страница 17: ...R bit 13 controls switching between 10 Mb s or 100 Mb s operation and the Duplex Mode bit bit 8 controls switching between full duplex operation and half duplex operation The Speed Selection and Duple...

Страница 18: ...tely 2 3 seconds to complete In addition Auto Negotiation with next page should take approximately 2 3 seconds to complete depending on the number of next pages sent Refer to Clause 28 of the IEEE 802...

Страница 19: ...f the PHY Status Register C0h While in Loopback mode the data will not be transmitted onto the media This is true for either 10 Mb s as well as 100 Mb s data In 100BASE TX Loopback mode the data is ro...

Страница 20: ...inuously injects IDLEs into the transmit data stream until the next transmit packet is detected re assertion of Transmit Enable 3 9 2 Scrambler The scrambler is required to control the radiated emissi...

Страница 21: ...ich converts the voltage to current and alternately drives either side of the transmit transformer primary winding resulting in a minimal current 20 mA max MLT 3 signal Refer to Figure 3 7 Figure 3 7...

Страница 22: ...It accepts TP PMD compliant waveforms directly requiring only a 100 termination plus a simple 1 1 transformer The DP83816 is completely ANSI TP PMD compliant and includes Base Line Wander BLW compensa...

Страница 23: ...B BP_SCR BP_RX CLOCK MUX MUX 4B 5B DECODER SERIAL TO CODE GROUP MUX DESCRAMBLER NRZI TO NRZ MLT 3 TO BINARY DIGITAL CLOCK LINK INTEGRITY RX_DATA VALID AGC INPUT BLW ADC SIGNAL COMPENSATION ADAPTIVE EQ...

Страница 24: ...tage This comparison would indicate the amount of equalization to use Although this scheme is used successfully on the DP83223V twister it is sensitive to transformer mismatch resistor variation and p...

Страница 25: ...pected register value based on a known cable length would indicate that the signal quality has deviated from the expected nominal case 3 10 5 MLT 3 to NRZI Decoder The DP83816 decodes the MLT 3 inform...

Страница 26: ...nection with good signal integrity If the line state monitor does not recognize sufficient unscrambled IDLE code groups within the 722 s period the entire de scrambler will be forced out of the curren...

Страница 27: ...typically three preamble bits at the beginning of each packet Only after all these conditions have been satisfied will a control signal be generated to indicate to the remainder of the circuitry that...

Страница 28: ...arate a Manchester encoded data stream into internal clock signals and data The differential input must be externally terminated with a differential 100 termination network to accommodate UTP cable Th...

Страница 29: ...DIO provides the PHY s with a sequence that can be used to establish synchronization This preamble may be generated either by driving MDIO high for 32 consecutive MDC clock cycles or by simply allowin...

Страница 30: ...in 10 Mb s mode when a collision is detected the collision is not reported until seven bits have been received while in the collision state This prevents a collision being reported incorrectly due to...

Страница 31: ...Configuration Latency Timer Register RO 10h CFGIOA Configuration IO Base Address Register R W 14h CFGMA Configuration Memory Address Register R W 18h 28h Reserved reads return zero 2Ch CFGSID Configur...

Страница 32: ...be set to 01 indicating that DP83816 supports medium DEVSELN timing 24 DPD Data Parity Detected Refer to the description in the PCI V2 2 specification 23 FBB Fast Back to Back Capable DP83816 will set...

Страница 33: ...5 3 Unused reads return 0 2 BMEN Bus Master Enable When set DP83816 is allowed to act as a PCI bus master When reset DP83816 is prohibited from acting as a PCI bus master 1 MSEN Memory Space Address...

Страница 34: ...t 00000000h Offset 0Ch Access Read Write Soft Reset Unchanged Bit Bit Name Description 31 BISTCAP BIST Capable Reads will always return 0 30 BISTEN BIST Enable Reads will return a 0 writes are ignored...

Страница 35: ...d Bit Bit Name Description 31 12 MEMBASE Memory Base Address This is set by software to the base address for the Operational Register Map 11 4 MEMSIZE Memory Size These bits return 0 which indicates t...

Страница 36: ...nly 10 1 unused reads return 0 0 ROMEN ROM Enable This is used by the PCI BIOS to enable accesses to boot ROM This allows the DP83816 to share the address decode logic between the boot ROM and itself...

Страница 37: ...ant The DP83816 desired setting for Minimum Grant The DP83816 will initialize this field to 11d 2 75 sec The value in this register can be loaded from the EEPROM 15 8 IPIN Interrupt Pin Read Only alwa...

Страница 38: ...icate PCI clock not needed for PMEN 18 16 PMV Power Management Version This bit field indicates compliance to a specific PM specification rev level Currently set to 010b 15 8 NLIPTR Next List Item Poi...

Страница 39: ...e Control Status Register R W 48h RFCR Receive Filter Match Control Register R W 4Ch RFDR Receive Filter Match Data Register R W 50h BRAR Boot ROM Address R W 54h BRDR Boot ROM Data R W 58h SRR Silico...

Страница 40: ...mit Reset When set to a 1 this bit causes the current transmission to be aborted the transmit data and status FIFOs to be flushed and the transmit state machine to enter the idle state TXE goes to 0 T...

Страница 41: ...configuration control bits 17 PINT_ACEN Phy Interrupt Auto Clear Enable When set to a 1 this bit allows the phy interrupt source to be automatically cleared whenever the ISR is read When this bit is...

Страница 42: ...fault allows normal transmitter back off operation R W 5 POW Program Out of Window Timer This bit controls when the Out of Window collision timer begins counting its 512 bit slot time A 0 causes the t...

Страница 43: ...MDIO pin R W 4 MDIO MII Management Data Software access to the MDIO pin see MDDIR above R W 3 EESEL EEPROM Chip Select Controls the value of the EESEL pin When set the EESEL pin is 1 when clear the E...

Страница 44: ...Setting this bit to 1 allows the SRAM BIST engine to be reset R W 9 8 Reserved for NSC internal use only Must be written as a 00 otherwise R W 7 RBIST_EN SRAM BIST Enable Setting this bit to 1 starts...

Страница 45: ...SSERR Signaled System Error The DP83816 signaled a system error on the PCI bus 21 RMABT Received Master Abort The DP83816 received a master abort generated as a result of target not responding 20 RTAB...

Страница 46: ...al Rx Drain Threshold has been met by the incoming packet and the transfer of the number of bytes specified by the DRTH field in the RXCFG register has been completed by the receive DMA engine This in...

Страница 47: ...s 0 the corresponding bit in the ISR will not cause an interrupt 9 TXIDLE Tx Idle When this bit is 0 the corresponding bit in the ISR will not cause an interrupt 8 TXERR Tx Packet Error When this bit...

Страница 48: ...abled When set to 0 the hardware INTR signal will be masked and no interrupts will be generated The setting of this bit has no effect on the ISR or IMR This provides the ability to disable the hardwar...

Страница 49: ...h Access Read Write Soft Reset 00040102h Bit Bit Name Description 31 CSI Carrier Sense Ignore Setting this bit to 1 causes the transmitter to ignore carrier sense activity which inhibits reporting of...

Страница 50: ...it words 64 bytes 110 32 32 bit words 128 bytes 111 64 32 bit words 256 bytes NOTE The MXDMA setting value MUST not be greater than the TXCFG FLTH Tx Fill Threshold value 19 unused 18 Reserved for NSC...

Страница 51: ...ive descriptor is NULL signifying the end of the list RXDP will not advance but will remain on the current descriptor Any subsequent writes to the RXE bit of the CR register will cause the receive sta...

Страница 52: ...l transmission such as during a PMD loopback or full duplex operation will be accepted as valid received data Additionally when set to 1 the receiver will ignore collision activity When set to 0 defau...

Страница 53: ...in the descriptor s cmdsts will be set A value of 0 is illegal and the results are undefined This value is also used to compare with the accumulated packet length for early receive indication When th...

Страница 54: ...d can occur if the DP83816 has not completed a pending packet transmit or receive Situation 2 is a clock start event and can occur if the DP83816 has been programmed to a WOL state and it receives a w...

Страница 55: ...tch is detected and the WKPAT0 bit is set RO cleared on read 26 ARPR ARP Received Set to 1 if an ARP packet has been detected and the WKARP bit is set RO cleared on read 25 BCASTR Broadcast Received S...

Страница 56: ...for processing this is a feature of the DP83816 In addition to the above Wake on LAN features DP83816 also provides Wake on Pattern Matching Wake on DA match and Wake on Magic Packet Wake on Pattern...

Страница 57: ...reception R W 29 PS_DA Pause on DA When set to 1 this bit enables reception of a pause frame based on a DA match with either the perfect match register or one of the pattern match buffers R W 28 24 un...

Страница 58: ...the packet to be accepted 27 APM Accept on Perfect Match When set to 1 this bit allows the perfect match register to be used to compare against the DA for packet acceptance When this bit is 0 the perf...

Страница 59: ...RFDR Perfect Match Register PMATCH 000h PMATCH octets 1 0 002h PMATCH octets 3 2 004h PMATCH octets 5 4 Pattern Count Registers PCOUNT 006h PCOUNT1 PCOUNT0 008h PCOUNT3 PCOUNT2 SecureOn Password Regis...

Страница 60: ...ct match register octets 1 0 iow l RFDR 0008 write address octets 1 0 iow l RFCR 0002 perfect match register octets 3 2 iow l RFDR 0717 write address octets 3 2 iow l RFCR 0004 perfect match register...

Страница 61: ...byte0 3FA Pattern2Word7E byte1 byte0 3F8 Pattern3Word1 byte1 byte0 306 Pattern2Word1 byte1 byte0 304 Pattern3Word0 byte1 byte0 302 Pattern2Word0 byte1 byte0 300 Pattern1Word3F byte1 byte0 2FE Pattern0...

Страница 62: ...rn into buffer 1 iow l RFCR PATBUF01 2 iow l RFDR 1012 iow l RFCR PATBUF01 6 iow l RFDR 1113 iow l RFCR PATBUF01 a iow l RFDR 1214 write data pattern into buffer 2 iow l RFCR PATBUF23 iow l RFDR 2022...

Страница 63: ...is accessed through the RFCR and the RFDR Refer to Figure 4 2 for a memory map Below is example code for setting clearing a bit in the hash table Figure 4 2 Hash Table Memory 40h bytes addressed on wo...

Страница 64: ...increment with every 32 bit access to the BRDR register 30 16 unused 15 0 ADDR Boot ROM Address 16 bit address used to access the external Boot ROM Tag BRDR Size 32 bits Hard Reset undefined Offset 00...

Страница 65: ...ck as 0 This bit is used for test purposes only and should be set to 0 for normal counter operation 2 ACLR Clear all counters When set to a 1 this bit forces all counters to be reset to 0 This bit is...

Страница 66: ...which are automatically rejected from the FIFO due to both wire errors and FIFO overruns 0064h RXFCSErrors 8 4 Packets received with frame check sequence errors This counter is incremented for each pa...

Страница 67: ...time before any valid data will appear at the MII receive outputs 13 Speed Selection Speed Select Default dependent on the setting of the ANEG_SEL bits in the CFG register When auto negotiation is di...

Страница 68: ...needed only once after reset invalid opcode or invalid turnaround 0 Normal management operation 5 Auto Negotiation Complete Auto Negotiation Complete Default 0 1 Auto Negotiation process complete 0 Au...

Страница 69: ...PHYIDR2 Size 16 bits Hard Reset 5C21h Offset 008Ch Access Read Only Bit Bit Name Description 15 10 OUI_LSB OUI Least Significant Bits Default 01 0111 Bits 19 to 24 of the OUI 080017h are mapped to bi...

Страница 70: ...Selector Protocol Selection Bits Default 00001 These bits contain the binary encoded protocol selector supported by this port 00001 indicates that this device supports IEEE 802 3u Tag ANLPAR Size 16...

Страница 71: ...etected via the Parallel Detection function 0 A fault has not been detected 3 LP_NP_ABLE Link Partner Next Page Able 1 Link Partner does support Next Page 0 Link Partner does not support Next Page 2 N...

Страница 72: ...Reset 0000h Offset 00C0h Access Read Only Bit Bit Name Description 15 14 Reserved Reserved Write ignored read as 0 13 Receive Error Latch Receive Error Latch This bit will be cleared upon a read of t...

Страница 73: ...operation 2 Duplex Status Duplex This bit indicates duplex status and is determined from Auto Negotiation or Forced Modes 1 Full duplex mode 0 Half duplex mode Note This bit is only valid if Auto Nego...

Страница 74: ...the PHY to generate an interrupt at the end of each management read to facilitate interrupt testing 1 Generate an interrupt 0 Do not generate interrupt Tag MISR Size 16 bits Hard Reset 0000h Offset 0...

Страница 75: ...s its max count FFh Tag RECR Size 16 bits Hard Reset 0000h Offset 00D4h Access Read Write Bit Bit Name Description 15 8 Reserved Reserved Writes ignored Read as 0 7 0 RXERCNT 7 0 RXER Counter Default...

Страница 76: ...11 PSR_15 BIST Sequence select Selects length of LFSR used in BIST 1 PSR15 selected 0 PSR9 selected 10 BIST_STATUS BIST Test Status Default 0 LL RO 1 BIST pass 0 BIST fail Latched cleared by write to...

Страница 77: ...arity 0 Normal polarity 4 POLARITY 10 Mb s Polarity Status RO LH This bit is a duplication of bit 12 in the PHYSTS register Both bits will be cleared upon a read of either register 1 Inverted Polarity...

Страница 78: ...nts per descriptor DP83816 only supports a single fragment per descriptor By default DP83816 will use the descriptor format shown above By setting CFG EUPHCOMP software may force compatibility with th...

Страница 79: ...l during the transmission of this packet was excessive 3 2 ms indicating transmission failure 21 OWC Out of Window Collision The MAC encountered an out of window collision during the transmission of t...

Страница 80: ...d do not cause any bus activity nor do they consume receive descriptors However this condition could occur if the packet is rejected by the Receive Filter later in the packet than the receive drain th...

Страница 81: ...1 4 Descriptor Lists Descriptors are organized in linked lists using the link field The system designer may also choose to implement a ring of descriptors by linking the last descriptor in the list ba...

Страница 82: ...ck Waiting for free space in the TxDataFIFO to reach TxFillThreshold txFragRead Waiting for the transfer of a fragment or portion of a fragment from the PCI bus to the TxDataFIFO txDescWrite Waiting f...

Страница 83: ...ngth will be the minimum of txFifoAvail and descCnt Decrement descCnt accordingly descCnt 0 MORE txDescWrite Start a burst transfer to write the status back to the descriptor clearing the OWN bit desc...

Страница 84: ...nd the SIZE field from the cmdsts field of the current descriptor to keep the TxDataFifo full It also uses the MORE bit and the SIZE field from the cmdsts field of the current descriptor to know when...

Страница 85: ...g for the transfer of a descriptor from the PCI bus into the RxDescCache rxFifoBlock Waiting for the amount of data in the RxDataFifo to reach the RxDrainThreshold or to represent a complete packet rx...

Страница 86: ...Ptr The length will be the minimum of rxPktBytes and descCnt Decrement descCnt accordingly descCnt 0 rxPktBytes 0 rxDescWrite Start a burst transfer to write the status back to the descriptor setting...

Страница 87: ...e device reads in the first descriptor into the RxDescCache 3 As data arrives in the RxDataFIFO the receive buffer management state machine places the data in the receive buffer described by the descr...

Страница 88: ...ta se quence which can be located anywhere within the packet but must be preceded by a synchronization stream The packet must also meet the basic require ments for the LAN technology chosen e g ethern...

Страница 89: ...n conjunction with the PCI Power Management states detailed in the previous section The DP83816 supports several wake events including but not limited to Wake on PHY Interrupt i e link change Wake on...

Страница 90: ...t was a packet this will now be emptied from the receive FIFO via DMA 6 6 Sleep Mode Sleep Mode is a system level function that allows a device to be placed in a lower power mode than WOL mode In slee...

Страница 91: ...se specified Note 1 These values ensure 3 3V and 5V compatibility Note 2 For IDD Measurements outputs are not loaded Symbol Parameter Conditions Min Typ Max Units VOH Minimum High Level Output Voltage...

Страница 92: ...ng 7 2 2 X1 Clock Timing Number Parameter Min Max Units 7 2 1 1 PCICLK Low Time 12 ns 7 2 1 2 PCICLK High Time 12 ns 7 2 1 3 PCICLK Cycle Time 30 ns Number Parameter Min Max Units 7 2 2 1 X1 Low Time...

Страница 93: ...iod will be ignored Note EE is disabled for non power on reset 7 2 4 Non Power On Reset Note Minimum reset complete time is a function of the PCI transmit and receive clock frequencies Number Paramete...

Страница 94: ...DP83816 7 2 5 POR PCI Inactive Number Parameter Min Max Units 7 2 5 1 VDD stable to EE access VDD indicates the digital supply AUX power plane except PCI bus power Guaranteed by design 60 us 7 2 5 2 E...

Страница 95: ...Min Max Units 7 2 6 1 Input Setup Time 7 ns 7 2 6 2 Input Hold Time 0 ns 7 2 6 3 Output Valid Delay 2 11 ns 7 2 6 4 Output Float Delay toff time 28 ns 7 2 6 5 Output Valid Delay for REQN point to poi...

Страница 96: ...d PCICLK FRAMEN AD 31 0 C BEN 3 0 IRDYN TRDYN DEVSELN PAR PERRN Addr Data IDSEL Cmd BE T1 T1 T1 T1 T2 T2 T1 T2 T2 T2 T1 T2 T3 T4 T3 T4 T1 T2 T4 T2 T3 T1 T2 PCICLK FRAMEN AD 31 0 C BEN 3 0 IRDYN TRDYN...

Страница 97: ...PCICLK FRAMEN AD 31 0 C BEN 3 0 IRDYN TRDYN DEVSELN PAR PERRN Addr Data Cmd BE T3 T3 T3 T3 T3 T4 T4 T3 T3 T3 T4 T1 T2 T1 T2 T3 T4 T1 T2 T4 T3 T4 PCICLK FRAMEN AD 31 0 C BEN 3 0 IRDYN TRDYN DEVSELN PA...

Страница 98: ...t Read PCICLK FRAMEN AD 31 0 C BEN 3 0 IRDYN TRDYN DEVSELN PAR PERRN Addr Data Cmd BE T1 T1 T1 T2 T2 T1 T2 T2 T1 T2 T3 T4 T3 T4 T1 T2 T4 T2 T3 T1 PCICLK FRAMEN AD 31 0 C BEN 3 0 IRDYN TRDYN DEVSELN PA...

Страница 99: ...ational com DP83816 PCI Bus Master Burst Write PCI Bus Arbitration PCICLK FRAMEN AD 31 0 C BEN 3 0 IRDYN TRDYN DEVSELN PAR PERRN Addr Data Cmd BE T3 T3 T3 T3 T3 T4 T4 T3 T3 T3 T4 T1 T2 T1 T2 T3 T4 T1...

Страница 100: ...Min Max Units 7 2 7 1 EECLK Cycle Time 4 us 7 2 7 2 EECLK Delay from EESEL Valid 1 us 7 2 7 3 EECLK Low to EESEL Invalid 2 us 7 2 7 4 EECLK to EEDO Valid 2 us 7 2 7 5 EEDI Setup Time to EECLK 2 us 7 2...

Страница 101: ...lse Width 180 ns 7 2 8 6 Data Hold Time from MRDN Invalid 0 ns 7 2 8 7 Data Invalid from MWRN Invalid 60 ns 7 2 8 8 Data Valid to MWRN Valid 30 ns 7 2 8 9 Address Setup Time to MWRN Valid 30 ns 7 2 8...

Страница 102: ...e On Delay is determined by measuring the time from the first bit of the J code group to the assertion of Carrier Sense Note 1 bit time 10 ns in 100 Mb s mode Note The Ideal window recognition region...

Страница 103: ...Notes Min Typ Max Units 7 2 10 1 End of Packet High Time with 0 ending bit 10 Mb s 300 ns 7 2 10 2 End of Packet High Time with 1 ending bit 10 Mb s 250 ns Parameter Description Notes Min Typ Max Unit...

Страница 104: ...eceive timings Parameter Description Notes Min Typ Max Units 7 2 12 1 Pulse Width 100 ns 7 2 12 2 Pulse Period 16 ms Parameter Description Notes Min Typ Max Units 7 2 13 1 Clock Data Pulse Width 100 n...

Страница 105: ...MDIO to MDC Setup 10 10 ns 7 2 14 3 MDIO from MDC Hold 10 ns 7 2 14 4 RXD to RXCLK Setup 10 ns 7 2 14 5 RXD from RXCLK Hold 10 ns 7 2 14 6 RXDV RXER to RXCLK Setup 10 ns 7 2 14 7 RXDV RXER from RXCLK...

Страница 106: ...105 www national com DP83816 Notes...

Страница 107: ...l component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system or to af fect its safety o...

Страница 108: ...or use in safety critical applications such as life support where a failure of the TI product would reasonably be expected to cause severe personal injury or death unless officers of the parties have...

Отзывы:

Нет отзывов

Похожие инструкции для DP83816AVNG

axing EOC 1-31 Operation Instructions Manual preview
EOC 1-31
Бренд: axing Страницы: 52
Dialogic Media Board D/120JCT-LS-EW Installation Manual preview
Media Board D/120JCT-LS-EW
Бренд: Dialogic Страницы: 2
ZyXEL Communications GS1100-10HP User Manual preview
GS1100-10HP
Бренд: ZyXEL Communications Страницы: 30
Lantronix WP2002000-01 User Manual preview
WP2002000-01
Бренд: Lantronix Страницы: 75
Wave Wireless Networking SPEEDLAN 4100 Installation And Operation User Manual preview
SPEEDLAN 4100
Бренд: Wave Wireless Networking Страницы: 167
LUX LUMEN 10230 Manual preview
10230
Бренд: LUX LUMEN Страницы: 41
3Com NETBuilder SI Using Manual preview
NETBuilder SI
Бренд: 3Com Страницы: 212
Multiplex MULTIflight Stick Operating Instructions Manual preview
MULTIflight Stick
Бренд: Multiplex Страницы: 10
Manson Engineering Industrial SBC-6108 User Manual preview
SBC-6108
Бренд: Manson Engineering Industrial Страницы: 10
Belkin F9K1002V1 User Manual preview
F9K1002V1
Бренд: Belkin Страницы: 42
ZyXEL Communications NMA1115 User Manual preview
NMA1115
Бренд: ZyXEL Communications Страницы: 28
EtherWAN EX17016 Installation Manual preview
EX17016
Бренд: EtherWAN Страницы: 2
Datacom DM4610 Installation Manual preview
DM4610
Бренд: Datacom Страницы: 45
ADF Web AXIS HD67555 User Manual preview
AXIS HD67555
Бренд: ADF Web Страницы: 20
Westermo MRD-315 User Manual preview
MRD-315
Бренд: Westermo Страницы: 34
Johnson Controls MS-NAE5510-3 Installation Manual preview
MS-NAE5510-3
Бренд: Johnson Controls Страницы: 28
Cisco SF100D-16P Quick Start Manual preview
SF100D-16P
Бренд: Cisco Страницы: 12
Cisco VIP-4R/4T Installation And Configuration Manual preview
VIP-4R/4T
Бренд: Cisco Страницы: 74

Бренды по названию

Популярные бренды

Загрузить еще бренды