Samsung S3C2440A - Manual (Page 441)

S3C2440A RISC MICROPROCESSOR MMC/SD/SDIO CONTROLLER
19-5
SDI Command Argument Register(SDICmdArg)
Register Address R/W Description Reset Value
SDICmdArg 0x5A000008 R/W SDI Command Argument Register 0x0
SDICmdArg Bit Description Initial Value
CmdArg [31:0] Command Argument 0x00000000
SDI Command Control Register(SDICmdCon)
Register Address R/W Description Reset Value
SDICmdCon 0x5A00000C R/W SDI Command Control Register 0x0
SDICommand Bit Description Initial Value
Reserved [31:13]
Abort Command
(AbortCmd)
[12] Determines whether command type is for abort(for SDIO).
0 = normal command, 1 = abort command(CMD12, CMD52)
0
Command with
Data (WithData)
[11] Determines whether command type is with data(for SDIO).
0 = without data, 1 = with data
0
LongRsp [10] Determines whether host receives a 136-bit long response or not
0 = short response, 1 = long response
0
WaitRsp [9] Determines whether host waits for a response or not
0 = no response, 1 = wait response
0
Command
Start(CMST)
[8] Determines whether command operation starts or not. . This bit is
automatically cleared.
0 = command ready, 1 = command start
0
CmdIndex [7:0] Command index with start 2bit(8bit) 0x00