Technical information

HGST Ultrastar C15K600 Hard Disk Drive Specification
187
18.10.12.5
Enhanced PHY Control Mode Page (Subpage 3)
Table 153 Subpage 3
Byte
Bit
Default
7
6
5
4
3
2
1
0
0
PS SPF=1 Page Code 19h
D9h
1
Subpage Code = 3
03h
2-3
Page Length = 002Ch
002Ch
4
Reserved
00h
5
Reserved Protocol Identifier = 6
06h
6
Generation Code
00h
7
Number of PHYs = 02h
02h
8-27
SAS PHY Mode Descriptor 0
--
28-47
SAS PHY Mode Descriptor 1
--
 Generation Code is a one-byte counter that shall be incremented by one by the device server every time the
values in this mode page or the SAS PHY mode page (see 10.2.7.7) field values are changed. A
GENERATION CODE field set to 00h indicates the generation code is unknown. The device server shall wrap
this field to 01h as the next increment after reaching its maximum value (i.e., FFh). The GENERATION CODE
field is also contained in the Protocol-Specific Port log page and may be used to correlate PHY settings
across mode page and log page accesses.
Table 154 PHY Mode Descriptor (0 and 1)
Byte
Bit
7
6
5
4
3
2
1
0
0
Reserved
1
PHY Identifier
2-3
Descriptor Length (0010h)
4-7
Programmed PHY Capabilities
8-11
Current PHY Capabilities
12-15
Attached PHY Capabilities
16-17
Reserved
18
Reserved
Negotiated SSC
Negotiated Physical Link Rate
19
Reserved
Enable
Slumber=0
Enable
Partial=0
Hardware Mixing
Supported=’0’