Technical Information • PCZ-NVM • CPU Expansion Side Card
COM-A/B
The PCZ-NVM is provided with an on-board PCI Express® to quad port UART bridge
(Diodes/Pericom PI7C9X7954). Two asynchronous serial interfaces are available via the front
panel (EIA/TIA 232). The other two (TTL-level) can be used across the mezzanine connector FIO by
means of the C32-FIO mezzanine board (12HP front panel assembly). Two on-board ESD
protected RS-232E transceivers (MAX3243E) allow a bit rate of 250kbps via COM-A/B.
COM-A/B • RS-232
Male D-Sub 9 (261.02.009.23)
1
DCD
DSR
6
2
RXD
RTS
7
3
TXD
CTS
8
4
DTR
RI
9
5
GND
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