M82510 View Datasheet(PDF) - Intel

Part Name

Description

MFG CO.

M82510

ASYNCHRONOUS SERIAL CONTROLLER

Intel 

M82510

32 MCR MODEM CONTROL REGISTER

MCR Modem Control Register

271072 – 45

This register controls the modem output pins With

multi-function pins it affects only the pins configured

as general purpose output pins All the output pins

invert the data i e their output will be the comple-

ment of the data written into this register

OUT0 OUT0 Output Bit This bit controls the

OUT0 pin The output signal is the complement of

this bit

LCB Loopback Control Bit This bit puts the

M82510 into loopback mode The particular type of

loopback is selected via the IMD register

OUT2 OUT2 Output Bit This bit controls the

OUT2 pin The output signal is the complement of

this bit

OUT1 OUT1 Output Bit This bit controls the

OUT1 pin The output signal is the complement of

this bit

RTS RTS Output Bit This bit controls the RTS

pin The output signal is the complement of this bit

DTR DTR Output Bit This bit controls the DTR

pin The output signal is the complement of this bit

DATA REGISTERS

The data registers hold data or other information

and may be accessed at any time

33 TXD TRANSMIT DATA REGISTER

TXD Transmit Data Register

271072 – 46

This register holds the next data byte to be pushed

into the Transmit FIFO For character formats with

more than eight bits of data or with additional com-

ponents (S W Parity Address Marker Bit) the addi-

tional data bits should be written into the TxF regis-

ter When a byte is written to this register its con-

tents along with the contents of the TxF register

are pushed to the top of the Transmit FIFO This

register is write only

34

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