IBM 2109 Model M12, User Manual

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Memory specifications
The centralized memory maximizes switch throughput by guaranteeing full transmit
and receive bandwidth to all Fibre Channel ports at all times.
Each CP card contains the type and specification of memory listed in Table 9.
Table 9. Memory specifications
Memory type Amount
Main memory 128 MB of SDRAM (32 bits wide)
Flash memory
v
User flash: 16 MB of 16-bit wide memory,
stored in two 8 MB banks
v
Compact flash: 256 MB, partitioned in two
128 MB sections
Boot flash memory 512 KB of 8-bit wide memory for system
startup
Battery specifications
The CP card has a lithium carbon-monoflouride coin cell battery.
Table 10 lists the battery specifications.
Table 10. Battery specifications
Type Specification
Rayovac BR1225 3.0 volt, 50 mAh
CAUTION:
There is a danger of explosion if the battery is incorrectly replaced. All used
batteries must be discarded according to the manufacturer’s instructions.
Contact IBM if the real time clock begins to lose time (4)
Terminal serial port specifications
Each CP card provides a terminal serial port with a DB-9 connector with an RS-232
signal subset.
Note: For dust and electrostatic discharge (ESD) protection, a cover is provided for
the serial port and should be kept on the port whenever the serial port is not
being used.
You can use the terminal serial port to connect to a computer workstation or
terminal without connecting to the fabric. Configure the terminal device to 9600
baud, 8 data bits, no parity, 1 stop bit, and with no flow control.
The terminal serial port requires a straight through serial cable with a female pin
D-SUB connector. Use the pinouts listed in Table 11.
Table 11. Terminal serial port pinouts
Pin Signal Description
1
2 Exudate Transmit data
3 Rewaxed Receive data
4
Appendix A. Product specifications
19