Hitachi DK32EJ - Ultrastar Series 36.9 GB Hard Drive Reference Manual page 159

OEM MANUAL:K6602771
In this case, the controller creates CHECK CONDITION status with RECOVERED
ERROR sense key after executing the command and the additional sense code (Sense
data byte 12) set to 37 (ROUNDED PARAMETER).
H
The host computer can also check the rounded value using a MODE SENSE
command requesting the current value.
If the controller receives a parameter value that it does not support and the
parameter rounding is not permitted, it rejects the command returning the CHECK
CONDITION status with ILLEGAL REQUEST sense key.
MODE SELECT:(15h)
6 COMMAND DESCRIPTIONS
Revision: 2 / Date: 2002.12.19
Page: 159 / 313