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Intel® PXA255 Processor Developer’s Manual 15-29
MultiMediaCard Controller
15.5.8 MMC_BLKLEN Register (MMC_BLKLEN)
MMC_BLKLEN, shown in Table 15-12, specifies the number of bytes in a block of data.
This is a read/write register. Ignore reads from reserved bits. Write zeros to reserved bits.
15.5.9 MMC_NOB Register (MMC_NOB)
In block mode, MMC_NOB, shown in Table 15-13, specifies the number of blocks.
This is a read/write register. Ignore reads from reserved bits. Write zeros to reserved bits.
Table 15-12. MMC_BLKLEN Bit Definitions
Physical Address
0x4110_001c
MMC_BLKLEN Register MultiMediaCard Controller
Bit
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
reserved BLK_LEN
Reset
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Bits Name Description
31:10 — reserved
9:0 BLK_LEN Number of bytes in the block.
Table 15-13. MMC_NOB Bit Definitions
Physical Address
0x4110_0020
MMC_NOB Register MultiMediaCard Controller
Bit
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
reserved MMC_NOB
Reset
0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
Bits Name Description
31:16 — reserved
15:0 MMC_NOB Number of blocks for a multiple block transfer