Section 12 DDR-SDRAM Interface (DDRIF)
Rev. 1.00 Oct. 01, 2007 Page 427 of 1956
REJ09B0256-0100
Bit Bit
Name
Initial
Value R/W Description
63 to 12
All
0
R
Reserved
These bits are always read as 0. The write value should
always be 0.
11 to 8
SPLIT
0001
R/W
DDR-SDRAM Memory Configuration
These bits specify the DDR-SDRAM row/column
configuration.
0001: 12
×
9 (= 8 M
×
16 bits product)
0011: 13
×
9 (= 16 M
×
16 bits product)
0100: 13
×
10 (= 32 M
×
16 bits product)
0110: 14
×
10 (= 64 M
×
16 bits product)
Other than above: Setting prohibited
The relationship between the SPLIT bits and
row/column is shown in section 12.5.12, Address
Multiplexing.
7 to 0
All
0
R
Reserved
These bits are always read as 0. The write value should
always be 0.
12.4.5
DDR-SDRAM Mode Register (SDMR)
SDMR is used to set the DDR-SDRAM mode register and extended mode register. Since SDMR
is not physically contained in the DDRIF, reading this register is invalid. Only write addresses
have a meaning for the DDR-SDRAM and the write data is ignored.
When SDMR is written to, signals are output to pins connected to the DDR-SDRAM according to
the table shown below.
Address bits 12 to 3 correspond to external pins M_A9 to M_A0, address bits 14 and 13 to
external pins M_BA1 and M_BA0, and address bits 18 to 15 to external pins M_A13 to M_A10.
M_CKE
Address Bit Correspondence
n-1 n
M_CS M_RAS
M_CAS
M_WE
M_BA1 and
M_BA0
M_A13 to
M_A10
M_A9 to
M_A0
H H L L L L
Bits
14
and
13
Bits 18 to
15
Bits 12 to
3
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 ...
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Страница 2026: ...SH7763 Hardware Manual ...