Table 11. Bit Definitions*

Table 13. 1.8432MHz Baud Rates

Table 12. Field Definitions

*

Default setting is clear

SPI/Microwire-Compatible

UART in QSOP-16

______________________________________________________________________________________

19

Baud

115.2k

B3...B0

56k

0 0 0 1

2

0 0 0 0

1

28k

0 0 1 0

4

14k

BRD

0 0 1 1

8

Baud

38.4k

B3...B0

19.2k

1 0 0 1

6

1 0 0 0

3

9600

1 0 1 0

12

4800

BRD

1 0 1 1

24

2400

1200

1 1 0 1

96

1 1 0 0

48

600

1 1 1 0

192

300

1 1 1 1

384

7200

3600

0 1 0 1

32

0 1 0 0

16

1800

0 1 1 0

64

900

0 1 1 1

128

Meaning

Register

Field Name

Baud-rate divisor

Transmit data

Write Data

D7t–D0t

Config

B3–B0

Received parity bit

Read Data

Pr

Received data

Read Data

D7r–D0r

Parity disabled

Parity enabled

Config

PE

Enable FIFO

buffer

Disable FIFO

buffer

Bit Set (1)

Bit Clear (0)

Operate

Shutdown

Config

SHDNi

Disable transmit-

done interrupt

Enable transmit-

done interrupt

Disable data-

received

interrupt

Enable data-

received inter-

rupt

Config

RM

Config

TM

Disable parity

interrupt

Enable parity

interrupt

Disable framing-

error interrupt

Enable framing-

error interrupt

Config

RAM

Standard

timing

Enable IrDA

timing mode

One stop bit

Two stop bits

Config

ST

Config

IR

Config

PM

Config

Register

FEN

Bit

Name

Bit Set (1)

Bit Clear (0)

Word length =

8 bits

Word length =

7 bits

Config

L

Enable normal

operation

Inhibit TX output

Register

Drive RTS out-

put pin high

Drive RTS output

pin low

Write

Data

RTS

Write

Data

TE

Transmit

parity = 0

Transmit

parity = 1

Write

Data

Pt

Normal

Data overrun or

framing error

CTS input pin is

high

CTS input pin is

low

Read

Data

CTS

Data buffer is

empty

Data has been

received

UART is busy

transmitting

Transmit buffer

is empty

All

T

All

R

Bit

Name

Read

Data

RA/FE