Relation Between Parameters And The Name Of Response Type - Samsung S3C2416 User Manual

HSMMC CONTROLLER
Name Bit
DATAPRNT [5]
ENCMDIDX [4]
ENCMDCR [3]
C
[2]
RSPTYP [1:0]
Table 20-2. Relation Between Parameters and the Name of Response Type
Response Type
00
01
10
10
11
These bits determine Response types.
20-26
Data Present Select
This bit is set to 1 to indicate that data is present and shall be
transferred using the DAT line. It is set to 0 for the following:
(1) Commands using only CMD line (ex. CMD52).
(2) Commands with no data transfer but using busy signal on DAT[0]
line (R1b or R5b ex. CMD38)
(3) Resume command
=
1 Data Present
=
0 No Data Present
Command Index Check Enable
If this bit is set to 1, the Host Controller shall check the Index field in
the response to see if it has the same value as the command index. If it
is not, it is reported as a Command Index Error. If this bit is set to 0, the
Index field is not checked.
=
1 Enable
=
0 Disable
Command CRC Check Enable
If this bit is set to 1, the Host Controller shall check the CRC field in the
response. If an error is detected, it is reported as a Command CRC
Error. If this bit is set to 0, the CRC field is not checked. The number of
bits checked by the CRC field value changes according to the length of
the response.
=
1 Enable
=
0 Disable
Reserved
Response Type Select
00 = No Response
01 = Response Length 136
10 = Response Length 48
11 = Response Length 48 check Busy after response
Index Check
Enable
0
0
0
1
1
Description
CRC Check
Name of Response Type
Enable
0
1
0
1
1
S3C2416X RISC MICROPROCESSOR
Initial Value
No Response
R2
R3, R4
R1, R6, R5, R7
R1b, R5b