Motorola MC68340 User Manual

MOTOROLA

7- 1

The MC68340 serial module is a dual universal asynchronous/synchronous
receiver/transmitter that interfaces directly to the CPU32 processor via the intermodule
bus (IMB). The serial module, shown in Figure 7-1, consists of the following major
functional areas:

• Two Independent Serial Communication Channels (A and B)

• Baud Rate Generator Logic

• Internal Channel Control Logic

• Interrupt Control Logic

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SERIAL COMMUNICATIONS

CHANNELS A AND B

BAUD RATE

GENERATOR LOGIC

INTERNAL CHANNEL

CONTROL LOGIC

X1

X2
SCLK

INTERRUPT CONTROL

LOGIC

RxDB

RxDA

TxDB

TxDA

CTSB

CTSA

RTSB

RTSA

TxRDYA

RxRDYA

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Freescale Semiconductor, Inc.

For More Information On This Product,

   Go to: www.freescale.com

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