Specifications

8.8.11.5 Negotiated Settings Subpage

Reserved7

Reserved6

Transceiver

Mode

RSVD5

Protocol Options BitsRSVD4

Transfer Width Exponent3

REQ/ACK Offset2

Reserved1

Transfer Period Factor0

01234567

Bit

Byte

1: Sent PCOMP_EN

2: Received PCOMP_EN

Figure 100. Negotiated Settings Subpage

The negotiated settings subpage is used to report the negotiated settings of the drive for the current I_T

nexus.

! Transfer Period Factor indicates the negotiated Transfer Period Factor.

! REQ/ACK Offset indicates the negotiated REQ/ACK Offset.

! Transfer Width Exponent indicates the negotiated Transfer Width Exponent.

! Protocol Options Bits contain the negotiated protocol options except PCOMP_EN.

! Received PCOMP_EN contains the value of PCOMP_EN received by the drive.

! Send PCOMP_EN contains the value of PCOMP_EN sent by the drive.

! Transceiver Mode specifies the current bus mode of the drive as defined below:

- 00b: Not used

- 01b: Single Ended

- 10b: Low Voltage Differential

- 11b: High Voltage Differential

Ultrastar 146Z10 hard disk drive specifications

108