Section 12 DDR-SDRAM Interface (DDRIF)
Rev. 1.00 Oct. 01, 2007 Page 428 of 1956
REJ09B0256-0100
Figure 12.3 shows the relationship between write values in SDMR and output signals to the
memory pins.
31
SDRAM
address
L: Low level
H: High level
DDR-SDRAM
1
30
1
29
1
28
1
27
1
26
1
25
1
24
0
23
1
22
0
21
0
20
1
19
0
18
0
17
0
16
0
15
0
14
0
13
0
12
0
11
0
10
0
9
1
8
1
7
0
6
0
5
0
4
0
3
1
2
0
1
0
0
0
MA0
MA1
MA2
MA3
MA4
MA5
MA6
MA7
MA8
MA9
MA10
MA11
MA12
MA13
BA0
BA1
CS
RAS
CAS
WE
H
L
L
L
L
H
H
L
L
L
L
L
L
L
L
L
L
L
L
L
M_CS
M_RAS
M_CAS
M_WE
Figure 12.3 Relationship between Write Values in SDMR and
Output Signals to Memory Pins
For example, when the DLL reset release, CAS latency of 2.5 cycles, sequential burst sequence,
and burst length of 2 are set to the mode register in the DDR-SDRAM, the following signals must
be output to the DDR-SDRAM pins.
CS
= low,
RAS
= low,
CAS
= low,
WE
= low, BA0 = low, BA1 = low,
MA13/MA12/MA11/MA10/MA9 = low, MA8 = low, MA7 = low, MA6 = high, MA5 = high,
MA4 = low, MA3 = low, MA2 = low, MA1 = low, and MA0 = high
To output the above control signals, write access to address H'FE90 0308 in SDMR is made in
longwords. Then the above control signals are output to the DDR-SDRAM pins. Write data to
SDMR is Don't care.
Содержание SH7763
Страница 2: ...Rev 1 00 Oct 01 2007 Page ii of lxvi ...
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 ...
Страница 2025: ......
Страница 2026: ...SH7763 Hardware Manual ...