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Cheetah 73FC Product Manual, Rev. C 55
9.5.11.1
Parallel Enclosure Services Interface (ESI)
The parallel ESI line is an output from the drive. This line provides the enclosure with an indication of the present function of the SEL lines. A high level, the default state, indicates the drive requires address information on the SEL lines. A low level indicates the drive is attempting an ESI transfer. The enclosure may not support ESI on any or all drive locations. It may only support the address function. Support of ESI is discovered by the drive. Refer to the Fibre Channel Interface Manual for a description of ESI operations.
9.5.12
Device control codes
The drive inputs a Device Control Code on the DEV_CTRL_CODE lines at power up to determine the link rate on the Fibre Channel ports. Both ports run at the same rate. If the backpanel does not connect to these lines,
supported codes.
Table 22: Device control code values
2 (pin 17) 1 (pin 18) 0 (pin 39) Definition
0
1
1
1
1
0
0
0
1
1
0
0
1
1
0
0
1
0
1
0
1
0
1
0
Power failure warning.
Reserved for auto negotiation of link rate.
Reserved.
Reserved.
Reserved.
Reserved.
2.125 GHz operation on both ports.
1.0625 GHz operation on both ports.
56
SEL ID
(hex)
1C
1D
1E
1F
18
19
1A
1B
14
15
16
17
10
11
12
13
0C
0D
0E
0F
08
09
0A
0B
04
05
06
07
00
01
02
03
24
25
26
27
20
21
22
23
28
29
2A
Table 23: Arbitrated loop physical address (AL_PA) values
AL_PA
(hex)
B6
B5
B4
B3
C3
BC
BA
B9
C9
C7
C6
C5
CD
CC
CB
CA
D3
D2
D1
CE
D9
D6
D5
D4
E1
E0
DC
DA
EF
E8
E4
E2
A7
A6
A5
AC
AB
AA
A9
B2
B1
AE
AD
Setting
(dec)
28
29
30
31
24
25
26
27
20
21
22
23
16
17
18
19
12
13
14
15
08
09
10
11
04
05
06
07
00
01
02
03
36
37
38
39
32
33
34
35
40
41
42
AL_PA
(hex)
69
67
66
65
6D
6C
6B
6A
73
72
71
6E
79
76
75
74
81
80
7C
7A
8F
88
84
82
9B
98
97
90
A3
9F
9E
9D
56
55
54
53
63
5C
5A
59
52
51
4E
SEL ID
(hex)
47
48
49
4A
43
44
45
46
3F
40
41
42
3B
3C
3D
3E
37
38
39
3A
33
34
35
36
2F
30
31
32
2B
2C
2D
2E
4F
50
51
52
4B
4C
4D
4E
53
54
55
Setting
(dec)
71
72
73
74
67
68
69
70
63
64
65
66
59
60
61
62
55
56
57
58
51
52
53
54
47
48
49
50
43
44
45
46
79
80
81
82
75
76
77
78
83
84
85
Cheetah 73FC Product Manual, Rev. C
Setting
(dec)
114
115
116
117
110
111
112
113
106
107
108
109
102
103
104
105
122
123
124
125
118
119
120
121
98
99
100
101
94
95
96
97
90
91
92
93
86
87
88
89
SEL ID
(hex)
72
73
74
75
6E
6F
70
71
6A
6B
6C
6D
66
67
68
69
7A
7B
7C
7D
76
77
78
79
62
63
64
65
5E
5F
60
61
5A
5B
5C
5D
56
57
58
59
AL_PA
(hex)
1F
1E
1D
1B
27
26
25
23
2C
2B
2A
29
32
31
2E
2D
08
04
02
01
18
17
10
0F
36
35
34
33
43
3c
3A
39
49
47
46
45
4D
4C
4B
4A
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