Hitachi ULTRASTAR 15K450 HUS154530VLF400 - Manual (Page 38)

Hitachi Ultrastar 15K450 (FC-AL) Hard Disk Drive Specification
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Note: All values are in hex format. An AL_PA value of 0x00 is not valid for an NL_Port. A SEL_ID of 0x7F forces the
drive to obtain a soft address.
7.1.6.3 P_ESI_n Function
The SEL_N (TTL compatible) I/O's (defined when -Parallel ESI is asserted) provide an interface between the enclosure and
the drive. When signals are defined as outputs, they are configured as open-drain drivers with 4mA sink capability.
When the drive asserts -Parallel ESI, it goes through a 'discovery' process (see SFF-8067) to determine the level of enclosure
service supported by the backplane. The outcome of the 'discovery' process is that the backplane:
1. Does not support enclosure services or
2. Supports SFF-8045 enclosure services or
3. Supports SFF-8067 enclosure services
The definition of the signals are summarized in the table below:
8 D9 28 A7 48 67 68 2E
9 D6 29 A6 49 66 69 2D
A D5 2A A5 4A 65 6A 2C
B D4 2B A3 4B 63 6B 2B
C D3 2C 9F 4C 5C 6C 2A
D D2 2D 9E 4D 5A 6D 29
E D1 2E 9D 4E 59 6E 27
F CE 2F 9B 4F 56 6F 26
10 CD 30 98 50 55 70 25
11 CC 31 97 51 54 71 23
12 CB 32 90 52 53 72 1F
13 CA 33 8F 53 52 73 1E
14 C9 34 88 54 51 74 1D
15 C7 35 84 55 4E 75 1B
16 C6 36 82 56 4D 76 18
17 C5 37 81 57 4C 77 17
18 C3 38 80 58 4B 78 10
19 BC 39 7C 59 4A 79 F
1A BA 3A 7A 5A 49 7A 8
1B B9 3B 79 5B 47 7B 4
1C B6 3C 76 5C 46 7C 2
1D B5 3D 75 5D 45 7E 1
1E B4 3E 74 5E 43 7E NA
1F B3 3F 73 5F 3C 7F -