Cypress EZ-USB FX3 User Manual

EZ-USB FX3 Technical Reference Manual, Document Number: 001-76074 Rev. *F 641
SDMMC_CMD_RESP_FMT
0xFC
10.26.14 SDMMC_CMD_RESP_FMT
SD/MMC Command Response Format
Configuration register that specifies the length and format of the command and response. There are two copies of this regis-
ter corresponding to the two storage ports. The address of each register is calculated as 0xe0020024 + (port * 0x0400).
31 RESPCRC_START 0: Compute response CRC from bit 0.
1: Compute response CRC from bit 8.
Option 1 is used for R2 response.
30 CORCRC_ODD 0: corrupt CRC16 for even bytes.
1: corrupt CRC16 for odd bytes.
This bit is effective only during DDR mode of operation.
28 R_CRC_EN 1: Enable CRC check in response.
0: Don't check CRC in response.
27 CORCRC Enable CRC error injection on outgoing data CRC16 field.
26:16 RESPCONF Response length in bits that does not include start, transmit, CRC7, and end bits.
0 indicates that no response is expected.
Non-zero values indicate the size in bits
5:0 CMDFRMT Command length minus 1, in bits, that includes command index bits and argument bits. This length
does not include start, transmit, CRC7 and end bits.
SDMMC_CMD_RESP_FMT
SDMMC Command Response Format
0xE0020024
b31 b30 b29 b28 b27 b26 b25 b24
RESPCRC_STAR
T
CORCRC_ODD
R_CRC_EN CORCRC RESPCONF[10:8]
RR RRRRR
R/W R/W
R/W R/W R/W R/W R/W
00
00000
b23 b22 b21 b20 b19 b18 b17 b16
RESPCONF[7:0]
RRRRRRRR
R/W R/W R/W R/W R/W R/W R/W R/W
01111110
b15 b14 b13 b12 b11 b10 b9 b8
b7 b6 b5 b4 b3 b2 b1 b0
CMDFRMT[5:0]
RRRRRR
R/W R/W R/W R/W R/W R/W
100101
Bit Name Description

Cypress EZ-USB FX3 Specifications

General

Brand	Cypress
Model	EZ-USB FX3
Category	Controller
Language	English