5.12.12.3Negotiated Settings Subpage (Sub Page 3 of Mode Page 19)

The negotiated settings subpage, shown in Table 5-77,is used to report the negotiated settings of a target for the current I_T nexus.

Table 5-77Negotiated Settings Subpage (03h)

Bit

7

6

 

5

4

 

3

 

2

 

1

0

Byte

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0

 

 

 

 

Transfer Period Factor

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

 

 

 

 

 

Reserved

 

 

 

 

 

 

 

 

 

 

 

 

 

2

 

 

 

 

 

Req/Ack Offset

 

 

 

 

 

 

 

 

 

 

3

 

 

 

 

Transfer Width Exponent

 

 

 

 

 

 

 

 

 

 

 

 

 

4

Reserved

 

 

 

 

 

Protocol Option Bits

 

 

 

 

 

 

 

 

 

 

 

 

5

 

Reserved

 

 

 

Transceiver

 

SENT_

RECEIVED

 

 

 

 

 

 

 

Mode

 

 

PCOMP_EN

PCOMP_EN

6

 

 

 

 

 

 

Reserved

 

 

 

 

 

 

 

 

 

 

 

 

 

7

 

 

 

 

 

Vendor Specific

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

The Transfer Period Factor field indicates the negotiated transfer period factor for the current I_T nexus.

 

Table 5-78Transceiver Period Factor

 

 

Code

Transceiver Period Factor

0-7

Reserved

 

 

8

TP=6.25ns Fast - 160 (U320)

 

 

9

TP=12.5ns Fast - 80 (U160)

 

 

0x0A

TP=25ns Fast - 40 (Ultra2)

 

 

0x0B

TP=30.3 ns Fast - 40

 

 

0x0C-

Fast - 20

0x18

 

0x19-

Fast - 10

0x31

 

0x32-

Fast - 5

0xFF

 

The Req/Ack Offset field indicates the negotiated REQ/ACK offset for the current I_T nexus.

The Transfer Width Exponent field indicates the negotiated transfer width exponent for the current I_T nexus.

The Protocol Options Bits field contain the negotiated protocol options for the current I_T nexus.

Maxtor Atlas 10K V

5-57