User Manual

SCSI Commands Reference Manual, Rev. J 457
www.seagate.com Parameters for direct access devices
5.3.31.2 Transceiver Controls Mode descriptors
Detail for the mode descriptor(s) for transceiver controls can be found in Table 430 and Table 431. Each field is defined below the
table. All supported link rates and controls shall be listed in page E5h.
Table 430 Transceiver Controls descriptor (1.5Gb - 6Gb Link Rate)
Bit
Byte
7 6 5 4 3 2 1 0
0 PHY IDENTIFIER
1 CONTROLLABLE LINK RATE
2 DRIVER STRENGTH CONTROL
3 DRIVER EMPHASIS CONTROL
4 DRIVER SLEW RATE CONTROL
5
MANUFACTURER DEFINED BYTES FOR TRANSMITTER CONTROL. . .
8
9 RECEIVER THRESHOLD CONTROL
10 RECEIVER EQUALIZATION GAIN CONTROL
11
MANUFACTURER DEFINE BYTES FOR RECEIVER CONTROL
12
13 INTERNAL RX EYE MARGIN RESET Reserved Reserved IREC
14 INTERNAL RX EYE HEIGHT
15 INTERNAL RX EYE WIDTH