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TABLE A-4
Pin Number
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
A.4.5
Data Transport Connector (Zone 2)
The data transport connector consists of one 120-pin HM-Zd connector, labeled P23,
with 40 differential pairs. This is called the Zone 2 connector.
The Zone 2 connector provides the following signals:
Two 1000BASE-T Ethernet Base Fabric channels
■
Two 1000 SERDES ports on the Extended Fabric interface
■
Synchronization Clock interface supporting CLK1A/B and CLK2A/2B
■
FIGURE A-5
Power Distribution Connector Pin Assignments (Continued)
Name
Unused
Unused
Unused
Unused
Unused
Unused
SHELF_GND
LOGIC_GND
ENABLE_B
VRTN_A
VRTN_B
EARLY_A
EARLY_B
ENABLE_A
−48V_A
−48V_B
shows the Zone 2 connectors.
Description
Shelf Ground
Logic Ground
Enable B
Voltage Return A
Voltage Return B
−48V Early A
–48V Early B
Enable A
−48V A
−48V B
Appendix A
Physical Characteristics
A-9
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