Table 3-16: power connector (p10) – Kontron AT8404 User Manual
Page 46
Hardware Description
33
AT8404 User Guide
www.kontron.com
3.1.9.1
Power Connector
The power connector supplies the board with two 48V redundant rails, digital ground and chassis ground. It
also provides the redundant IPMB Shelf Manager connection.
3.1.9.2
Power Supply Mezzanine
The Filter, the Hot-Swap-Controller, the Hold Over circuit and the Quarter-Brick are situated on the Power
Supply Mezzanine Module. It shall only be removed or exchanged by authorized personnel.
3.1.9.3
Power Distribution
The Telecom DC voltage (-48V) is supplied by the backplane via two independent rails, primary (A) and sec-
ondary (B). The rails are mixed using power Schottky rectifiers. A 7A fuse protects each -48V line and a 10A
fuse protects each RTN line. A hot swap controller enables the 48V power to the board.
On the mezzanine module, a quarter brick DC/DC converter transforms the 48 Volts to secondary 12 Volts for
payload supply and 3.3 Volts for management supply.
Several point of load converters generate the various required voltages.
The management (or suspend) power is present once the board is connected to the backplane. It supplies the
IPMI part which in turn controls the payload power. The various payload voltages are switched on and off in a
sequenced manner.
3.1.9.4
Power Supply AMCs
Each AMC has its own power supply. The 12V payload power is generated by a hot swap controller and for the
3V3 management power a current limit switch is used. The maximum power dissipation for an AMC is 60W.
For further details please refer the AMC Specification.
Table 3-16: Power Connector (P10)
Signal
Pin
Pin
Signal
N.C.
1
2
N.C.
N.C.
3
4
N.C.
HA0
5
6
HA1
HA2
7
8
HA3
HA4
9
10
HA4
HA6
11
12
HA5
SCL_A
13
14
SDA_A
SCL_B
15
16
SDA_B
MT1_TIP(N.C.)
17
18
MT2_TIP(N.C.)
RING_A(N.C.)
19
20
RING_B(N.C.)
MT1_RING(N.C.)
21
22
MT2_RING(N.C.)
RRTN_A(N.C.)
23
24
RRTN_B(N.C.)
SHELF_GND
25
26
LOGIC_GND
ENABLE_B
27
28
VRTN_A
VRTN_B
29
30
EARLY_A
EARLY_B
31
32
ENABLE_A
-48V_A
33
34
-48V_B
17 20
25 26
33 34
30 31
27 32
28 29
21 24
13 16
1 4