SH7763 Datasheet, PDF (1363/2026 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperHTM RISC Engine Family SH-4A Series

Section 31 Multimedia Card Interface (MMCIF)
31.3.3 Transfer Byte Number Count Register (TBCR)
TBCR specifies the number of bytes to be transferred (the block size) for each single block
transfer command. TBCR specifies the net number of data block bytes not including the start bit,
end bit, and CRC.
The multiblock transfer command corresponds to the number of bytes of each data block.
Bit: 7
6
5
4
3
2
1
0
————
C[3:0]
Initial value: 0
0
0
0
0
0
0
0
R/W: R R R R R/W R/W R/W R/W
Bit
7 to 4
3 to 0
Initial
Bit Name Value R/W
—
All 0 R
CS[3:0]
0000 R/W
Description
Reserved
These bits are always read as 0. The write value should
always be 0.
Transfer Data Block Size
0000: 1 byte
0001: 2 bytes
0010: 4 bytes
0011: 8 bytes
0100: 16 bytes
0101: 32 bytes
0110: 64 bytes
0111: 128 bytes
1000: 256 bytes
1001: 512 bytes
1010: 1024 bytes
1011: 2048 bytes
1100 to 1111: Setting prohibited
Rev. 1.00 Oct. 01, 2007 Page 1297 of 1956
REJ09B0256-0100