Motorola CPCI-6115 Manuel de service Page 78

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Functional Description
CPCI-6200 Installation and Use (6806800J66C)
78
4.7.4 Serial COM Ports
This board supports four serial ports. Two serial ports, COM1 and COM2, are provided through
the built-in DUART interface of the processor. The remaining two ports, COM3 and COM4, are
provided by TL16C2550 on the local bus.
COM1 is routed to the front panel.
COM2 is for internal use only.
COM3 and COM4 are multiplexed through the serial MUX PLD and routed to the RTM through
the J5 connector.
4.8 DUART Interface
The DUART interface provides two serial ports COM1 and COM2 to CPCI-6200. COM1 provides
a front access asynchronous serial port interface using Serial Port 0 from the MPC8572 DUART.
The TTL-level signals SIN, SOUT, RTS and CTS from Serial Port 0 are routed through onboard
EIA-232 drivers and receivers to the mini DB-9 front panel connector.
COM2 provides an asynchronous serial port interface using Serial Port 1 from the MPC8572
DUART. COM2 is routed to the IPMI controller and is used internally to facilitate
communication between processor and IPMI controller.
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