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Schroff Shelf Alarm Panel (SAP)
21596-077
8 Shelf Alarm Panel Backplane Connector
Figure 7: Shelf Alarm Panel Backplane Connector
Table 4: Shelf Alarm Panel Backplane Connector Pin Assignment
Pin
A
Description
1
-48V_A
-48 V Feed A
2
3
4
5
6
GND
Ground
7
SDA_CH0
Data I²C-bus
Channel 0
8
SCL_CH0
Clock I²C-bus
Channel 0
9
10
DSR_ACB1
Data Set Ready
Shelf Manager
11
12
CTS_ACB1
Clear To Send
Shelf Manager
13
14
15
SAP_PRES
SAP Presence signal
to Shelf Manager
16
INV_ACTIVE_A
Active signal from
CB1
Shelf Manager
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Shelf Alarm Panel Backplane Connector
SAP ATCA Backplane Connector
B
Description
-48V_B
-48 V Feed B
I2C_PWR_A
3.6 V from Shelf
Manager
GND
Ground
GND
Ground
INT
RXD0_ACB1
Receive Data
Shelf Manager
DTR_ACB1
Data Terminal Ready
Shelf Manager
TXD0_ACB1
Transmit Data
Shelf Manager
SCL_A
6
12706926
C
Description
VRTN_A
Voltage return Feed
A
VRTN_B
Voltage return Feed
B
I2C_PWR_B
3.6 V from Shelf
Manager
GND
CD_ACB1
Carrier Detect
Shelf Manager
RTS_ACB1
Request To Send
Shelf Manager
SHELF_GND
Shelf Ground
R1.0, February 05, 2008
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