Philips Semiconductors

Product specification

SC26C92

Dual universal asynchronous receiver/transmitter (DUART)

2000 Jan 31

14

BIT 7

BIT 6

BIT 5

BIT 4

BIT 3

BIT 2

BIT 1

BIT 0

MR2A

MR2B

CHANNEL MODE

Tx CONTROLS

RTS

CTS

ENABLE Tx

STOP BIT LENGTH*

MR2B

0x00

00 = Normal

01 = Auto-Echo

10 = Local loop

11 = Remote loop

0 = No

1 = Yes

0 = No

1 = Yes

0 = 0.563

4 = 0.813

8 = 1.563

C = 1.813

1 = 0.625

5 = 0.875

9 = 1.625

D = 1.875

2 = 0.688

6 = 0.938

A = 1.688

E = 1.938

3 = 0.750

7 = 1.000

B = 1.750

F = 2.000

NOTE: *Add 0.5 to values shown for 0 – 7 if channel is programmed for 5 bits/char.

CSRA

BIT 7

BIT 6

BIT 5

BIT 4

BIT 3

BIT 2

BIT 1

BIT 0

CSRA

CSRB

001

RECEIVER CLOCK SELECT

TRANSMITTER CLOCK SELECT

0x01

See Text

See Text

CRA

BIT 7

BIT 6

BIT 5

BIT 4

BIT 3

BIT 2

BIT 1

BIT 0

CRA

CRB

MISCELLANEOUS COMMANDS*

DISABLE Tx

ENABLE Tx

DISABLE Rx

ENABLE Rx

CRB

0x01

See Text

0 = No

1 = Yes

0 = No

1 = Yes

0 = No

1 = Yes

0 = No

1 = Yes

NOTE: Access to the miscellaneous commands should be separated by 3 X1 clock edges. A disabled transmitter cannot be loaded.