Response Register - Samsung S3C2416 User Manual

S3C2416X RISC MICROPROCESSOR
NOTES:
1. In the SDIO specification, response type notation of R5b is not defined. R5 includes R5b in the SDIO specification.
But R5b is defined in this specification to specify the Host Controller shall check busy after receiving response. For
example, usually CMD52 is used as R5 but I/O abort command shall be used as R5b.
2. For CMD52 to read BS after writing "Bus Suspend," Command Type should be "Suspend" as well.

5.8 RESPONSE REGISTER

This register is used to store responses from SD cards.
Register
RSPREG0_0 0X4AC00010
RSPREG1_0 0X4AC00014
RSPREG2_0 0X4AC00018
RSPREG3_0 0X4AC0001C
Register
RSPREG0_1 0X4A800010
RSPREG1_1 0X4A800014
RSPREG2_1 0X4A800018
RSPREG3_1 0X4A80001C
Name Bit
CMDRSP [127:0] Command Response
Kind of Response
R1, R1b (normal response)
R1b (Auto CMD12 response)
R2 (CID, CSD register)
R3 (OCR register)
R4 (OCR register)
R5,R5b
R6 (Published RCA response)
R7
Address R/W
ROC
ROC
ROC
ROC
Address R/W
ROC
ROC
ROC
ROC
The Table below describes the mapping of command responses from
the SD Bus to this register for each response type. In the table, R[]
refers to a bit range within the response data as transmitted on the SD
Bus, REP[] refers to a bit range within the Response register.
128-bit Response bit order : {RSPREG3, RSPREG2, RSPREG1,
RSPREG0}
Table 20-3. Response Bit Definition for Each Response Type.
Meaning of Response
Card Status
Card Status for Auto CMD12
CID or CSD reg. incl.
OCR register for memory
OCR register for I/O etc
SDIO response
New published RCA[31:16] etc
?
Description
Response Register 0 (Channel 0)
Response Register 1 (Channel 0)
Response Register 2 (Channel 0)
Response Register 3 (Channel 0)
Description
Response Register 0 (Channel 1)
Response Register 1 (Channel 1)
Response Register 2 (Channel 1)
Response Register 3 (Channel 1)
Description
Response Field
HSMMC CONTROLLER
Response Register
R [39:8] REP [31:0]
R [39:8] REP [127:96]
R [127:8] REP [119:0]
R [39:8] REP [31:0]
R [39:8] REP [31:0]
R [39:8] REP [31:0]
R [39:8] REP [31:0]
R [39:8] REP [31:0]
Reset Value
0x0
0x0
0x0
0x0
Reset Value
0x0
0x0
0x0
0x0
Initial Value
20-27