Section 12 DDR-SDRAM Interface (DDRIF)
Rev. 1.00 Oct. 01, 2007 Page 432 of 1956
REJ09B0256-0100
12.5.3 Supported
DDR-SDRAM Commands
Table 12.6 shows the DDR-SDRAM commands supported by the DDRIF.
Table 12.6 DDR-SDRAM Commands Issued by DDRIF
Function Symbol
CKEn
−
1 CKEn
CS RAS
CAS
WE
MA13
to
MA11
AP
(MA10)
BA1
and
BA0
MA9 to
MA0
Device
deselect
DESL H
X H X X X X X X X
No
operation
NOP H
X L H H H X X X X
Read
READ H
X L H L H V L V V
Read with auto precharge READA
H
X
L
H
L
H
V
H
V
V
Write
WRITE
H
X L H L L V L V V
Write with auto precharge WRITEA
H
X
L
H
L
L
V
H
V
V
Bank
activate
ACT H
X L L H H V V V V
Precharge
select
bank
PRE H
X L L H L X L V X
Precharge
all
banks PREALL
H
X L L H L X H X X
Auto
refresh
REFA H
H L L L H X X X X
Self-refresh entry from
IDLE
REFS H
L L L L H X X X X
Self-refresh
exit
REFSX
L
H H X X X X X X X
Power-down
entry
PWRDN
H
L H X X X X X X X
Power-down
exit
PWRDNX
L
H H X X X X X X X
Mode register set
MRS/
EMRS
H
X L L L L V V V V
[Legend]
H: High
level
L: Low
level
X:
High level or low level (either is acceptable)
V: Valid
data
The DESL command in table 12.6 is issued when the DDR-SDRAM is not accessed by modules.
The DESL command therefore cannot be issued by the user.
Содержание SH7763
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Страница 122: ...Section 2 Programming Model Rev 1 00 Oct 01 2007 Page 56 of 1956 REJ09B0256 0100 ...
Страница 144: ...Section 3 Instruction Set Rev 1 00 Oct 01 2007 Page 78 of 1956 REJ09B0256 0100 ...
Страница 170: ...Section 4 Pipelining Rev 1 00 Oct 01 2007 Page 104 of 1956 REJ09B0256 0100 ...
Страница 282: ...Section 7 Caches Rev 1 00 Oct 01 2007 Page 216 of 1956 REJ09B0256 0100 ...
Страница 378: ...Section 9 Interrupt Controller INTC Rev 1 00 Oct 01 2007 Page 312 of 1956 REJ09B0256 0100 ...
Страница 514: ...Section 12 DDR SDRAM Interface DDRIF Rev 1 00 Oct 01 2007 Page 448 of 1956 REJ09B0256 0100 ...
Страница 630: ...Section 13 PCI Controller PCIC Rev 1 00 Oct 01 2007 Page 564 of 1956 REJ09B0256 0100 ...
Страница 686: ...Section 14 Direct Memory Access Controller DMAC Rev 1 00 Oct 01 2007 Page 620 of 1956 REJ09B0256 0100 ...
Страница 710: ...Section 16 Clock Pulse Generator CPG Rev 1 00 Oct 01 2007 Page 644 of 1956 REJ09B0256 0100 ...
Страница 732: ...Section 17 Watchdog Timer and Reset WDT Rev 1 00 Oct 01 2007 Page 666 of 1956 REJ09B0256 0100 ...
Страница 752: ...Section 18 Power Down Mode Rev 1 00 Oct 01 2007 Page 686 of 1956 REJ09B0256 0100 ...
Страница 772: ...Section 19 Timer Unit TMU Rev 1 00 Oct 01 2007 Page 706 of 1956 REJ09B0256 0100 ...
Страница 824: ...Section 21 Compare Match Timer CMT Rev 1 00 Oct 01 2007 Page 758 of 1956 REJ09B0256 0100 ...
Страница 1060: ...Section 23 Gigabit Ethernet Controller GETHER Rev 1 00 Oct 01 2007 Page 994 of 1956 REJ09B0256 0100 ...
Страница 1062: ...Section 24 IP Security Accelerator SECURITY Rev 1 00 Oct 01 2007 Page 996 of 1956 REJ09B0256 0100 ...
Страница 1124: ...Section 26 I 2 C Bus Interface IIC Rev 1 00 Oct 01 2007 Page 1058 of 1956 REJ09B0256 0100 ...
Страница 1184: ...Section 27 Serial Communication Interface with FIFO SCIF Rev 1 00 Oct 01 2007 Page 1118 of 1956 REJ09B0256 0100 ...
Страница 1350: ...Section 30 SIM Card Module SIM Rev 1 00 Oct 01 2007 Page 1284 of 1956 REJ09B0256 0100 ...
Страница 1484: ...Section 33 Audio Codec Interface HAC Rev 1 00 Oct 01 2007 Page 1418 of 1956 REJ09B0256 0100 ...
Страница 1560: ...Section 35 USB Host Controller USBH Rev 1 00 Oct 01 2007 Page 1494 of 1956 REJ09B0256 0100 ...
Страница 1720: ...Section 37 LCD Controller LCDC Rev 1 00 Oct 01 2007 Page 1654 of 1956 REJ09B0256 0100 ...
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Страница 2026: ...SH7763 Hardware Manual ...