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AT8902M
3.1.8
Power Supply
The power supply fulfills the PICMG 3.0 requirements and has the following characteristics:
• Full operation at -38VDC to -72VDC
• No damage inflicted to board at 0VDC to -75VDC
• Typical payload power consumption (no RTM, no AMCs): 65W
• Maximum payload power consumption (no RTM, no AMCs): 90W
• Management power consumption (suspend power): 7W
• Additional AMC payload power consumption: 75W
3.1.8.1
Power Connector
The power connector supplies the board with two 48V redundant rails, digital ground and chas-
sis ground. It also provides the redundant IPMB Shelf Manager connection.
Table 3-14: Power Connector (P10)
Signal
Pin
N.C.
1
N.C.
3
HA0
5
HA2
7
HA4
9
HA6
11
SCL_A
13
SCL_B
15
MT1_TIP(N.C.)
17
RING_A(N.C.)
19
MT1_RING(N.
21
C.)
RRTN_A(N.C.)
23
SHELF_GND
25
ENABLE_B
27
VRTN_B
29
EARLY_B
31
-48V_A
33
4
1
13
16
20
17
24
21
25
26
29
28
32
27
31
30
34
33
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Hardware Description
Pin
Signal
2
N.C.
4
N.C.
6
HA1
8
HA3
10
HA4
12
HA5
14
SDA_A
16
SDA_B
18
MT2_TIP(N.C.)
20
RING_B(N.C.)
22
MT2_RING(N.
C.)
24
RRTN_B(N.C.)
26
LOGIC_GND
28
VRTN_A
30
EARLY_A
32
ENABLE_A
34
-48V_B
AT8902M User Guide
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