Samsung S3C2440A - Manual (Page 445)

S3C2440A RISC MICROPROCESSOR MMC/SD/SDIO CONTROLLER
19-9
SDI Data Remain Counter Register(SDIDatCnt)
Register Address R/W Description Reset Value
SDIDatCnt 0x5A000030 R SDI Data Remain Counter Register 0x0
SDIDatCnt Bit Description Initial Value
Reserved [31:24]
BlkNumCnt [23:12] Remaining Block number 0x000
BlkCnt [11:0] Remaining data byte of 1 block 0x000
SDI Data Status Register(SDIDatSta)
Register Address R/W Description Reset Value
SDIDatSta 0x5A000034 R/(C) SDI Data Status Register 0x0
SDIDatSta Bit Description Initial Value
Reserved [31:12]
No Busy(NoBusy) [11]
R/C
Busy is not active during 16cycle after cmd packet transmitted in
only busy check mode. This flag is cleared by setting to 1 this bit.
0 = not detect, 1 = no busy signal
0
Read Wait
Request Occur
(RWaitReq)
[10]
R/C
Read wait request signal transmits to sd card. The request signal is
stopped and this flag is cleared by setting to one this bit.
0 = not occur, 1 = Read wait request occur
0
SDIO Interrupt
Detect(IOIntDet)
[9]
R/C
SDIO interrupt detect. This flag is cleared by setting to one this bit.
0 = not detect, 1 = SDIO interrupt detect
0
Reserved [8]
CRC Status
Fail(CrcSta) [7]
R/C
CRC Status error when data block sent(CRC check failed). This
flag is cleared by setting to one this bit.
0 = not detect, 1 = crc status fail
0
Data Receive CRC
Fail(DatCrc)
[6]
R/C
Data block received error(CRC check failed). This flag is cleared
by setting to one this bit.
0 = not detect, 1 = receive crc fail
0
Data Time
Out(DatTout)
[5]
R/C
Data / Busy receive timeout. This flag is cleared by setting to one
this bit.
0 = not detect, 1 = timeout
0
Data Transfer
Finish(DatFin)
[4]
R/C
Data transfer completes(data counter is zero). This flag is cleared
by setting to one this bit.
0 = not detect, 1 = data finish detect
0
Busy Finish
(BusyFin)
[3]
R/C
Only busy check finish. This flag is cleared by setting to one this bit
0 = not detect, 1 = busy finish detect
0
Reserved [2] 0
Tx Data progress
On(TxDatOn)
[1] Data transmit in progress
0 = not active, 1 = data Tx in progress
0
Rx Data Progress
On(RxDatOn)
[0] Data receive in progress
0 = not active, 1 = data Rx in progress
0