Table 39 Phy Event Counter Identifiers - Western Digital Ultrastar DC HC310 Specifications

9.17.3.2 Counter Identifiers
Each counter begins with a 16-bit identifier. Table 39 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 /
(Bits 11:0) Optional
000h Mandatory
001h Mandatory
002h Optional
003h Optional
004h Optional
005h Optional
006h Optional
007h Optional
008h Optional
009h Optional
00Ah Mandatory
00Bh Optional
00Dh Optional
00Fh Optional
010h Optional
012h Optional
013h Optional

Table 39 Phy Event Counter Identifiers

Description
No counter value; marks end of counters in the page
Command failed and ICRC bit set to one in Error register
R_ERR response for Data FIS
R_ERR response for Device-to-Host Data FIS
R_ERR response for Host-to-Device Data FIS
R_ERR response for Non-data FIS
R_ERR response for Device-to-Host Non-data FIS
R_ERR response for Host-to-Device Non-data FIS
Not supported (Device-to-Host non-Data FIS retries)
Transitions from drive PhyRdy to drive PhyNRdy
Signature Device-to-Host Register FISes sent due to a COMRESET
CRC errors within a Host-to-Device FIS
Non-CRC errors within a Host-to-Device FIS
Not supported (R_ERR response for Host-to-Device Data FIS due to CRC errors)
Not supported
(R_ERR response for Host-to-Device Data FIS due to non-CRC errors)
Not supported
(R_ERR response for Host-to-Device Non-data FIS due to CRC errors)
Not supported
(R_ERR response for Host-to-Device Non-data FIS due to non-CRC errors)
Western Digital Hard Disk Drive OEM Specification
65