Table of Contents
Advertisement
Command Specifications
Table 4.16 Combinations of error recovery flags (4/4)
EER
PER
DTE
DCR
1
1
1
0
1
1
1
1
*1 If a setting-prohibited combination of error recovery flags is specified, the
MODE SELECT or MODE SELECT EXTENDED command is terminated
with a CHECK CONDITION status (ILLEGAL REQUEST [=5] / Invalid
field in parameter list [=26-00]) and all the parameters specified at that time
are disabled.
Remark:
Just as explained for the EER, PER, DTE and DCR bits, the IDD can only make a
valid specification for the PER bit. Therefore, among the error recovery flag
combinations listed above, the only one which can actually operated is (EER,
PER, DTE, DCR) = (1, 0, 0, 0) and (1, 1, 0, 0).
4-34
Error Recovery Procedure
1. When a correctable data check is detected, immediately, correction is
executed according to the ECC. For data checks which cannot be corrected,
rereading is tried repeatedly up to the number of times specified in the "Read
Retry Count", "Write Retry Count" or "Verify Retry Count" parameter.
However, if a correctable error is detected during reading, data correction is
executed at that point according to the ECC.
2. When error recovery has succeeded, or even when recovery is impossible,
execution of the command is terminated with a CHECK CONDITION status
at the point when error recovery processing is completed, and the sense data
indicate the data block address where that error occurred.
3. Transfer to the INIT of data in blocks with recovered errors is done, but
transfer to the INIT of data blocks in which the errors were unrecoverable is
done in accordance with the specification in the TB bit (read commands).
(Setting prohibited) (See *1 at the end of this table.)
C141-C009
Advertisement
Table of Contents
