Datasheet

ManualsBrandsHITACHI ManualsInternal Hard Drives2.5" (6.35 cm) internal hard drive 500 GB Travelstar Z5K500 Bulk SATA II

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Z5K500 OEM Specifications

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14.17.5 Phy Event Counter

Phy Event Counters are a feature to obtain more information about Phy level events that occur on the

interface. The counter values are not retained across power cycles. The counter values are preserved

across COMRESET and software resets.

14.17.5.1 Counter Reset Mechanisms

There are 2 mechanisms by which the host can explicitly cause the Phy counters to be reset. The first

mechanism is to issue a BIST Activate FIS to the drive. The second mechanism uses the Read Log Ext

command. When the drive receives a Read Log Ext command for log page 11h and bit 0 in Feature

Phy event counter values.

14.17.5.2 Counter Identifiers

Each counter begins with a 16-bit identifier. The following table defines the counter value for each

identifier.

For all counter descriptions, “transmitted” refers to items sent by the drive to the host and “received”

refers to items received by the drive from the host.

Bit 15 of the counter identifier is reserved for future definition.

Bits 14:12 of the counter identifier convey the number of significant bits that counter uses. All counter

values consumes a multiple of 16-bits. The valid values for bit 14:12 and the corresponding counter size

are:

1h 16-bit counter

2h 32-bit counter

3h 48-bit counter

4h 64-bit counter

Bits 11:0 of the counter identifier are identifiers defined in the following table.

Identifier

(Bits 11:0)

Description

000h No counter value; marks end of counters in the page

001h Command failed due to ICRC error

002h R_ERR response for Data FIS

003h R_ERR response for Device-to-Host Data FIS

004h R_ERR response for Host-to-Device Data FIS

005h R_ERR response for non-Data FIS

006h R_ERR response for Device-to-Host non-Data FIS

007h R_ERR response for Host-to-Device non-Data FIS

009h Transfer from drive PhyRdy to drive PhyNRdy

00Ah Signature D2H register FISes sent due to a COMRESET

00Bh CRC errors within the FIS (received)

00Dh Non-CRC errors within the FIS (received)

Table 82 Phy Event Counter Identifier