Section 12 DDR-SDRAM Interface (DDRIF)
Rev.1.00 Dec. 13, 2005 Page 423 of 1286
REJ09B0158-0100
CKE
Address Bit Correspondence
n-1 n
CS RAS
CAS
WE
BA1 and
BA0
MA13 to
MA10
MA9 to
MA0
H H L L L L Bits
14
and 13
Bits 18 to
15
Bits 12 to
3
Figure 12.4 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
1
21
0
20
0
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
MCS
MARS
MCAS
MWE
Figure 12.4 Relationship between Write Values in SDMR and
Output Signals to Memory Pins
For example, to release the DLL from the reset state, set a CAS latency of 2.5 cycles, sequential
burst sequence, and burst length of 2 in the mode register of the SDRAM, the following signals
must be output on the 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
Содержание SH7780 Series
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Страница 122: ...Section 3 Instruction Set Rev 1 00 Dec 13 2005 Page 72 of 1286 REJ09B0158 0100 ...
Страница 146: ...Section 4 Pipelining Rev 1 00 Dec 13 2005 Page 96 of 1286 REJ09B0158 0100 ...
Страница 196: ...Section 6 Floating Point Unit FPU Rev 1 00 Dec 13 2005 Page 146 of 1286 REJ09B0158 0100 ...
Страница 292: ...Section 9 L Memory Rev 1 00 Dec 13 2005 Page 242 of 1286 REJ09B0158 0100 ...
Страница 450: ...Section 11 Local Bus State Controller LBSC Rev 1 00 Dec 13 2005 Page 400 of 1286 REJ09B0158 0100 ...
Страница 492: ...Section 12 DDR SDRAM Interface DDRIF Rev 1 00 Dec 13 2005 Page 442 of 1286 REJ09B0158 0100 ...
Страница 674: ...Section 15 Clock Pulse Generator CPG Rev 1 00 Dec 13 2005 Page 624 of 1286 REJ09B0158 0100 ...
Страница 692: ...Section 16 Watchdog Timer and Reset Rev 1 00 Dec 13 2005 Page 642 of 1286 REJ09B0158 0100 ...
Страница 726: ...Section 18 Timer Unit TMU Rev 1 00 Dec 13 2005 Page 676 of 1286 REJ09B0158 0100 ...
Страница 1004: ...Section 24 Multimedia Card Interface MMCIF Rev 1 00 Dec 13 2005 Page 954 of 1286 REJ09B0158 0100 ...
Страница 1032: ...Section 25 Audio Codec Interface HAC Rev 1 00 Dec 13 2005 Page 982 of 1286 REJ09B0158 0100 ...
Страница 1070: ...Section 26 Serial Sound Interface SSI Module Rev 1 00 Dec 13 2005 Page 1020 of 1286 REJ09B0158 0100 ...
Страница 1104: ...Section 27 NAND Flash Memory Controller FLCTL Rev 1 00 Dec 13 2005 Page 1054 of 1286 REJ09B0158 0100 ...
Страница 1150: ...Section 28 General Purpose I O GPIO Rev 1 00 Dec 13 2005 Page 1100 of 1286 REJ09B0158 0100 ...
Страница 1184: ...Section 29 User Break Controller UBC Rev 1 00 Dec 13 2005 Page 1134 of 1286 REJ09B0158 0100 ...
Страница 1266: ...Section 31 Electrical Characteristics Rev 1 00 Dec 13 2005 Page 1216 of 1286 REJ09B0158 0100 ...
Страница 1328: ...Appendix Rev 1 00 Dec 13 2005 Page 1278 of 1286 REJ09B0158 0100 ...
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