9.17.3.2Counter Identifiers

Each counter begins with a 16-bit identifier. 0 defines the counter value for each identifier. Any unused counter slots in the log page should have a counter identifier value of 0h.

Optional counters that are not implemented shall not be returned in log page 11h. A value of „0‟ returned for a counter means that there have been no instances of that particular event. There is no required ordering for event counters within the log page; the order is arbitrary and selected by the device vendor.

For all counter descriptions, „transmitted‟ refers to items sent by the device to the host and „received‟ refers to items received by the device from the host.

Bits 14:12 of the counter identifier convey the number of significant bits that counter uses. All counter values consume a multiple of 16-bits. The valid values for bits 14:12 and the corresponding counter sizes are:

1h 16-bit counter

2h 32-bit counter

3h 48-bit counter

4h 64-bit counter

Any counter that has an identifier with bit 15 set to one is vendor specific. This creates a vendor specific range of counter identifiers from 8000h to FFFFh. Vendor specific counters shall observe the number of significant bits 14:12 as defined above.

Identifier

Mandatory /

Description

(Bits 11:0)

Optional

 

000h

Mandatory

No counter value; marks end of counters in the page

001h

Mandatory

Command failed and ICRC bit set to one in Error register

002h

Optional

R_ERR response for Data FIS

003h

Optional

Not supported (R_ERR response for Device-to-Host Data FIS)

004h

Optional

Not supported (R_ERR response for Host-to-Device Data FIS)

005h

Optional

R_ERR response for Non-data FIS

006h

Optional

Not supported (R_ERR response for Device-to-Host Non-data FIS)

007h

Optional

Not supported (R_ERR response for Host-to-Device Non-data FIS)

008h

Optional

Not supported (Device-to-Host non-Data FIS retries)

009h

Optional

Transitions from drive PhyRdy to drive PhyNRdy

00Ah

Mandatory

Signature Device-to-Host Register FISes sent due to a COMRESET

00Bh

Optional

CRC errors within a Host-to-Device FIS

00Dh

Optional

Non-CRC errors within a Host-to-Device FIS

00Fh

Optional

Not supported (R_ERR response for Host-to-Device Data FIS due to CRC

 

errors)

 

 

010h

Optional

Not supported (R_ERR response for Host-to-Device Data FIS due to

 

non-CRC errors)

 

 

012h

Optional

Not supported (R_ERR response for Host-to-Device Non-data FIS due to

 

CRC errors)

 

 

013h

Optional

Not supported (R_ERR response for Host-to-Device Non-data FIS due to

 

non-CRC errors)

 

 

Table 39 Phy Event Counter Identifiers

Hitachi hard disk drive specifications

78

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Hitachi HUA722050CLA330/1, A7K2000 Phy Event Counter Identifiers, Identifier Mandatory Description Bits Optional

HCS721016CLA382, HCS721050CLA382, HCS721025CLA382, HDP725050GLA360, HUA722050CLA330/1 specifications

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