Chapter 4 Storage/Control I/O Module

Hardware Configuration

You can position the jumpers in locations JP13 and JP18 (under the “To Terminal” etching) to configure the CPU as a DCE termination. Moving the jumpers to these locations supports the following SIO connections:

Straight-through cables connecting the system to a host terminal (DCE to DTE)

Crossover (null modem) cables connecting the system to a modem (DCE to DCE)

Refer to the Cisco VCO/4K Hardware Installation Guide for more information on serial cable requirements.

Note When modifying jumper positions on Storage/Control I/O Module boards, you must move all seven jumpers to the new location to ensure operation.

Serial Ports 1 Through 4

Serial ports 1 through 4 can be configured as a modem (DCE) for connection to a terminal, or terminal (DTE) for connection to a modem. The Storage/Control I/O Module card’s serial ports are configured for shipment in the DCE configuration. Table 4-4illustrates jumper positions for DCE and DTE.

Table 4-4 Jumper Positions for DCE and DTE Modem Connections

Port

DTE Operation

DCE Operation

 

 

 

1

Jumper –TO MODEM JP11

Jumper—JP1 TO TERMINAL

 

 

 

2

Jumper – TO MODEM JP17

Jumper—JP16 TO TERMINAL

 

 

 

3

Jumper – TO MODEM JP14

Jumper—JP13 TO TERMINAL

 

 

 

4

Jumper – TO MODEM JP19

Jumper—JP18 TO TERMINAL

 

 

 

Refer to Figure 4-8for the jumper locations on the Storage/Control I/O Module card.

Figure 4-8 Jumper Locations on the Storage/Control I/O Module Card

TO MODEM

 

TO MODEM

TO MODEM

TO MODEM

JP19

 

JP17

JP14

JP11

PORT 4

 

PORT 2

PORT 3

PORT 1

JP18

 

JP16

JP13

JP1

TO TERMINAL

TO TERMINAL

 

Hard disk drive

TO TERMINAL

TO TERMINAL

JP15

J21

 

 

 

 

J20

 

 

 

 

 

 

50172

Seven jumpers are installed at jumper locations JP1, JP11, JP13, JP14, JP16, JP17, JP18 and JP19,

connecting pins 1-2, 3-4, 5-6, 7-8, 9-10, 11-12, 13-14 as shown in Figure 4-9.

Cisco VCO/4K Mechanical Assemblies

4-12

78-10334-03

 

 

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Cisco Systems VCO/4K specifications Serial Ports 1 Through, Port DTE Operation DCE Operation

VCO/4K specifications

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