Visible to Intel only — GUID: tga1481130146947
Ixiasoft
Visible to Intel only — GUID: tga1481130146947
Ixiasoft
16.5.9.3.2. Register Settings for ATA Payload Transfer
Bits | Value | Comment |
---|---|---|
31 |
1 or 0 |
Set to 0 for read operation or set to 1 for write operation |
30:24 |
0 |
Reserved (bits set to 0 by host processor) |
23:16 |
0 |
Reserved (bits set to 0 by host processor) |
15:8 |
Data count |
Data Count Unit [15:8] |
7:0 |
Data count |
Data Count Unit [7:0] |
Bits | Value | Comment |
---|---|---|
start_cmd | 1 |
- |
ccs_expected | 1 |
CCS is expected. Set to 1 for the RW_BLK command if interrupts are enabled in CE‑ATA card device (the nIEN bit is set to 0 in the ATA control register) |
read_ceata_device | 0 or 1 |
Set to 1 for a RW_BLK or RW_REG read command |
update_clk_regs_only | 0 |
No clock parameters update command |
card_num | 0 |
- |
send_initialization | 0 |
No initialization sequence |
stop_abort_cmd | 0 |
- |
send_auto_stop | 0 |
- |
transfer_mode | 0 |
Block transfer mode. Byte count must be integer multiple of 4kB. Block size can be 512, 1k or 4k bytes |
read_write | 1 or 0 |
1 for write and 0 for read |
data_expected | 1 |
Data is expected |
response_length | 0 |
- |
response_expect | 1 |
- |
cmd_index | Command index |
Set this parameter to the command number. For example, set to 24 for SD/SDIO WRITE_BLOCK (CMD24) or 25 for WRITE_MULTIPLE_BLOCK (CMD25). |
wait_prvdata_complete | 1 |
|
check_response_crc | 1 |
|
Bits | Value | Comment |
---|---|---|
31:16 |
0 |
Reserved bits set to 0 |
15:0 (block_size) |
512, 1024 or 4096 |
MMC block size can be 512, 1024 or 4096 bytes as negotiated by host |
Bits | Value | Comment |
---|---|---|
31:0 |
<n>*block_size |
Byte count must be an integer multiple of the block size. For ATA media access commands, byte count must be a multiple of 4 KB. (<n>*block_size = <x>*4 KB, where <n> and <x> are integers) |