R01UH0823EJ0100 Rev.1.00
Page 1425 of 1823
Jul 31, 2019
RX23W Group
40. SD Host Interface (SDHIa)
40.2.5
Response Register 10 (SDRSP10), Response Register 32 (SDRSP32),
Response Register 54 (SDRSP54), Response Register 76 (SDRSP76)
Registers SDRSP10, SDRSP32, SDRSP54, and SDRSP76 are read-only registers that store the response from the SD
card. Depending on the type of response from the SD card, the SDHI divides and stores the response among the four
registers.
lists the correspondence between the response type and its storage destination.
Note 1. The response for CMD18 and CMD25 is stored in registers SDRSP10 and SDRSP54. Therefore, even if the SDRSP10 register
is overwritten with the response for the automatically transmitted CMD12, the response for CMD18 or CMD25 can be confirmed
by reading the SDRSP54 register.
SDRSP10
SDRSP32
SDRSP54
Address(es): SDHI.SDRSP10 0008 AC18h, SDHI.SDRSP32 0008 AC20h, SDHI.SDRSP54 0008 AC28h
b31 b30 b29 b28 b27 b26 b25 b24 b23 b22 b21 b20 b19 b18 b17 b16 b15 b14 b13 b12 b11 b10 b9
b8
b7
b6
b5
b4
b3
b2
b1
b0
Value after 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
SDRSP76
Address(es): SDHI.SDRSP76 0008 AC30h
b31 b30 b29 b28 b27 b26 b25 b24 b23 b22 b21 b20 b19 b18 b17 b16 b15 b14 b13 b12 b11 b10 b9
b8
b7
b6
b5
b4
b3
b2
b1
b0
— — — — — — — —
Value after 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
Bit
Symbol
Bit Name
Description
R/W
b23 to b0
—
—
This register stores the response from the SD card.
R
b31 to b24
—
Reserved
These bits are 0 when read.
R
Table 40.4
Correspondence Between the Response Type and Its Storage Destination
Response Type
SDRSP10 Register
SDRSP32 Register
SDRSP54 Register
SDRSP76 Register
R1
[39:8]
—
[39:8]
—
R1b
[39:8]
—
[39:8]
—
R2
[39:8]
[71:40]
[103:72]
[127:104]
R3
[39:8]
—
—
—
R4
[39:8]
—
—
—
R5
[39:8]
—
—
—
R6
[39:8]
—
—
—
R7
[39:8]
—
—
—