Hitachi Ultrastar 15K73 Reference Manual page 125

3.5 inch magnetic disk drive scsi interface specification
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Bit 3 : EER (Enable Early Recovery)
Bit 2 : PER (Post Error)
Bit 1 : DTE (Disable Transfer on Error)
Bit 0 : DCR (Disable Correction)
Combinations of error control bits (bits 0-3) are summarized in Table 5.41.
There are some bit combinations that are not allowed.
MODE SELECT:(15h)
5 COMMAND DESCRIPTIONS
When set to 1, this bit specifies that the controller is to attempt error
correction, if possible, before applying retries.
When this bit is set to 0, it specifies that the controller is to carry out
the predetermined number of retries before attempting error
correction.
When set to 1, this bit specifies that the controller is to enable the
reporting of the CHECK CONDITION status with the RECOVERED
ERROR sense key.
When this bit is set to 0, it specifies that the controller does not set the
CHECK CONDITION status for RECOVERED ERROR.
When set to 1, this bit specifies that the controller is to create the
CHECK CONDITION status upon detection of the first error block,
irrespective of whether the error is recoverable or not.
When this bit is set to 0, it indicates that the controller can continue
transferring the recovered data to the host computer until an
unrecoverable error occurs or the specified length of data bytes to be
transferred have exhausted.
When set to 1, this bit specifies that the controller must not attempt
error correction during the error recovery procedure.
When this bit is set to 0, it indicates that the controller can attempt
error correction during the error recovery procedure.
OEM MANUAL:K6602924
Revision: 1 / Date: 2003.03.06
Page: 125 / 273
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