Samsung S3C2451X User Manual page 516

HSMMC CONTROLLER
(2) Busy timeout after Write CRC status
R
(3) Write CRC Status timeout
(4) Read Data timeout.
'1' = Timeout
'0' = No Error
Command Index Error
STACMD [3]
Occurs if a Command Index error occurs in the command response.
IDXERR
'1' = Error
'0' = No Error
Command End Bit Error
CMDEBI [2]
Occurs when detecting that the end bit of a command response is 0.
TERR
'1' = End bit Error generated
'0' = No Error
Command CRC Error
STACMD [1]
CRCER
(1) If a response is returned and the Command Timeout Error is set to 0
R
(indicating no timeout), this bit is set to 1 when detecting a CRC error in the
command response.
(2) The Host Controller detects a CMD line conflict by monitoring the CMD
line when a command is issued. If the Host Controller drives the CMD line to
1 level, but detects 0 level on the CMD line at the next SDCLK edge, then
the Host Controller shall abort the command (Stop driving CMD line) and set
this bit to 1. The Command Timeout Error shall also be set to 1 to distinguish
CMD line conflict.
'1' = CRC Error generated
'0' = No Error
Command Timeout Error
STACMD [0]
Occurs only if no response is returned within 64 SDCLK cycles from the end
TOUTER
bit of the command. If the Host Controller detects a CMD line conflict, in
R
which case Command CRC Error shall also be set as shown in Table 33,
this bit shall be set without waiting for 64 SDCLK cycles because the
command will be aborted by the Host Controller.
'1' = Timeout
'0' = No Error
The relation between Command CRC Error and Command Timeout Error is shown in Table below.
Command CRC
0
0
1
1
The relation between Command CRC Error and Command Timeout Error
Preliminary product information describe products that are in development,
for which full characterization data and associated errata are not yet available.
21-48
Specifications and information herein are subject to change without notice.
Command CRC Error is generated in two cases.
Command Timeout
Error
0
1
0
1
Error
No Error
Response Timeout Error
Response CRC Error
CMD line conflict
S3C2451X RISC MICROPROCESSOR
Kinds of error
0
0
0