Renesas RX Series User Manual

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)
 SDRSP10, SDRSP32, SDRSP54
 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.
Table 40.4 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:
00000000000000000000000000000000
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:
00000000000000000000000000000000
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]
*1
—
R1b [39:8] — [39:8]
*1
—
R2 [39:8] [71:40] [103:72] [127:104]
R3 [39:8] — — —
R4 [39:8] — — —
R5 [39:8] — — —
R6 [39:8] — — —
R7 [39:8] — — —

Renesas RX Series Specifications

General

Brand	Renesas
Model	RX Series
Category	Microcontrollers
Language	English