Hitachi HCS721016CLA382 User Manual
Hitachi hard disk drive specifications
79
9.17.3.2.1
Counter Definitions
The counter definitions in this section specify the events that a particular counter identifier
represents.
represents.
9.17.3.2.1.1
Identifier 000h
There is no counter associated with identifier 000h. A counter identifier of 000h indicates that
there are no additional counters in the log page.
there are no additional counters in the log page.
9.17.3.2.1.2
Identifier 001h
The counter with identifier 001h returns the number of commands that returned an ending status
with the ERR bit set to one in the Status register and the ICRC bit set to one in the Error register.
9.17.3.2.1.3
with the ERR bit set to one in the Status register and the ICRC bit set to one in the Error register.
9.17.3.2.1.3
Identifier 002h
The counter with identifier 002h returns the sum of (the number of transmitted Device-to-Host
Data FISes to which the host responded with R_ERR
Data FISes to which the host responded with R_ERR
P
) and (the number of received Host-to-
Device Data FISes to which the device responded with R_ERR
P
).
9.17.3.2.1.4
Identifier 005h
The counter with identifier 005h returns the sum of (the number of transmitted Device-to-Host
non-Data FISes to which the host responded with R_ERR
non-Data FISes to which the host responded with R_ERR
P
) and (the number of received Host-to-
Device non-Data FISes to which the device responded with R_ERR
P
). Retries of non-Data FISes
are included in this count.
9.17.3.2.1.5
9.17.3.2.1.5
Identifier 009h
The counter with identifier 009h returns the number of times the device transitioned into the
PHYRDY state from the PHYNRDY state, including but not limited to asynchronous signal events,
power management events, and COMRESET events. If interface power management is enabled,
then this counter may be incremented due to interface power management transitions.
9.17.3.2.1.6
PHYRDY state from the PHYNRDY state, including but not limited to asynchronous signal events,
power management events, and COMRESET events. If interface power management is enabled,
then this counter may be incremented due to interface power management transitions.
9.17.3.2.1.6
Identifier 00Ah
The counter with identifier 00Ah returns the number of transmitted Device-to-Host Register FISes
with the device reset signature in response to a COMRESET, which were successfully followed by
an R_OK from the host.
with the device reset signature in response to a COMRESET, which were successfully followed by
an R_OK from the host.
9.17.3.2.1.7
Identifier 00Bh
The counter with identifier 00Bh returns the number of received Host-to-Device FISes of all types
(Data and non-Data) to which the device responded with R_ERR
(Data and non-Data) to which the device responded with R_ERR
P
due to CRC error.
9.17.3.2.1.8
Identifier 00Dh
The counter with identifier 00Dh returns the number of received Host-to-Device FISes of all types
(Data and non-Data) to which the devices responded with R_ERR
(Data and non-Data) to which the devices responded with R_ERR
P
for reasons other than CRC
error.