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Data ModulesPassport 4400 Hardware Installation Module
7-4
Memory Expansion Card for Legacy Data Module
For Passport 4400 units containing a Legacy Data Module (LDM) and one or more
Legacy Data Expansion Modules (LEM), you must order a memory expansion
card for the LDM. This memory expansion card provides 1MB of SRAM memory
required to support the additional ports provided by the LEM.
To order the LDM memory expansion card, please consult document 800-1959-
20, Passport 4400 Ordering Catalog. The part number of the card is NTA150AA.
Connectors
Figure 7-5. Pin Assignments for Legacy Data Expansion Module
Figure 7-6. Pin Assignments for Legacy Data Module
see Figure 7-2
RJ45
Pin 1
1
2
3
4
5
6
7
8
Data Terminal Ready
Signal Ground
Receive Data
Transmit Data
Clear to Send
see Figure 7-2
1
Pins 1, 2, 8 Not Connected
DB9 connector for Token
Ring serial interface
Pins 2, 3, 4, 7, 8 Not Connected
Management Port
RJ45 interface
1
2
3
4
5
6
7
8
9
Rx+
Tx-
Rx-
Tx+