Section 12 DDR-SDRAM Interface (DDRIF)
Rev.1.00 Dec. 13, 2005 Page 409 of 1286
REJ09B0158-0100
MD31 to MD24 MD23 to MD16 MD15 to MD8
MD7 to MD0
32-byte access at address 0
(first round: from address 0)
Bit 31 to 24
Bit 23 to 16
Bit 15 to 8
Bit 7 to 0
32-byte access at address 0
(second round: from address 4)
Bit 31 to 24
Bit 23 to 16
Bit 15 to 8
Bit 7 to 0
32-byte access at address 0
(third round: from address 8)
Bit 31 to 24
Bit 23 to 16
Bit 15 to 8
Bit 7 to 0
32-byte access at address 0
(fourth round: from address 12 (H'C))
Bit 31 to 24
Bit 23 to 16
Bit 15 to 8
Bit 7 to 0
32-byte access at address 0
(fifth round: from address 16 (H'10))
Bit 31 to 24
Bit 23 to 16
Bit 15 to 8
Bit 7 to 0
32-byte access at address 0
(sixth round: from address 20 (H'14))
Bit 31 to 24
Bit 23 to 16
Bit 15 to 8
Bit 7 to 0
32-byte access at address 0
(seventh round: from address 24
(H'18))
Bit 31 to 24
Bit 23 to 16
Bit 15 to 8
Bit 7 to 0
32-byte access at address 0
(eighth round: from address 28 (H'1C))
Bit 31 to 24
Bit 23 to 16
Bit 15 to 8
Bit 7 to 0
Bit 31
Time
sequence
Example of memory address A[3:0] = 0000
(Other than above: 32-byte wraparound operation)
Read
(Address A + 0)
(Address A + 4)
(Address A + 8)
(Address A + 12)
Bit 0
Bit 63
(Address A + 4)
Bit 32 Bit 31
(Address A + 0)
Bit 0
Bit 63
(Address A + 12)
Little endian
Big endian
Bit 32 Bit 31
(Address A + 8)
Bit 0
Write
DDR-SDRAM
32 bit
Time
sequence
Bit 63
(Address A + 0)
Bit 32 Bit 31
(Address A + 4)
Bit 0
Bit 63
(Address A + 8)
Bit 32 Bit 31
(Address A + 12)
Bit 0
Time
sequence
Figure 12.3 Data Alignment in DDR-SDRAM and DDRIF
Summary of Contents for SH7780 Series
Page 2: ...Rev 1 00 Dec 13 2005 Page ii of l ...
Page 28: ...Rev 1 00 Dec 13 2005 Page xxviii of l ...
Page 50: ...Rev 1 00 Dec 13 2005 Page l of l ...
Page 82: ...Section 1 Overview Rev 1 00 Dec 13 2005 Page 32 of 1286 REJ09B0158 0100 ...
Page 122: ...Section 3 Instruction Set Rev 1 00 Dec 13 2005 Page 72 of 1286 REJ09B0158 0100 ...
Page 146: ...Section 4 Pipelining Rev 1 00 Dec 13 2005 Page 96 of 1286 REJ09B0158 0100 ...
Page 196: ...Section 6 Floating Point Unit FPU Rev 1 00 Dec 13 2005 Page 146 of 1286 REJ09B0158 0100 ...
Page 292: ...Section 9 L Memory Rev 1 00 Dec 13 2005 Page 242 of 1286 REJ09B0158 0100 ...
Page 492: ...Section 12 DDR SDRAM Interface DDRIF Rev 1 00 Dec 13 2005 Page 442 of 1286 REJ09B0158 0100 ...
Page 674: ...Section 15 Clock Pulse Generator CPG Rev 1 00 Dec 13 2005 Page 624 of 1286 REJ09B0158 0100 ...
Page 692: ...Section 16 Watchdog Timer and Reset Rev 1 00 Dec 13 2005 Page 642 of 1286 REJ09B0158 0100 ...
Page 726: ...Section 18 Timer Unit TMU Rev 1 00 Dec 13 2005 Page 676 of 1286 REJ09B0158 0100 ...
Page 1032: ...Section 25 Audio Codec Interface HAC Rev 1 00 Dec 13 2005 Page 982 of 1286 REJ09B0158 0100 ...
Page 1150: ...Section 28 General Purpose I O GPIO Rev 1 00 Dec 13 2005 Page 1100 of 1286 REJ09B0158 0100 ...
Page 1184: ...Section 29 User Break Controller UBC Rev 1 00 Dec 13 2005 Page 1134 of 1286 REJ09B0158 0100 ...
Page 1266: ...Section 31 Electrical Characteristics Rev 1 00 Dec 13 2005 Page 1216 of 1286 REJ09B0158 0100 ...
Page 1328: ...Appendix Rev 1 00 Dec 13 2005 Page 1278 of 1286 REJ09B0158 0100 ...
Page 1336: ...Rev 1 00 Dec 13 2005 Page 1286 of 1286 REJ09B0158 0100 ...
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Page 1340: ...SH7780 Hardware Manual ...