5307 UART Module

1- 13

UART REGISTERS

READ ONLY

READ ONLY

0

0

0

COS

1

1

1

CTS

RST:

0

0

0

0

0

1

1

CTS

UIPCR - INPUT PORT CHANGE REGISTER

-

-

-

-

-

-

-

CTS

RST:

1

1

1

1

1

1

1

CTS

UIP - INPUT PORT REGISTER

COS - WHEN SET INDICATES A LOW-TO-HIGH OR HIGH-TO-LOW TRANSITION

LONGER THAN 25-50usec HAS OCCURRED ON INPUT PIN. AN IRQ IS

GENERATED TO THE CPU, IF ENABLED

CTS - INDICATES THE CURRENT PIN STATE INPUT

CTS - INDICATES THE CURRENT PIN STATE INPUT

WRITE ONLY

BGR

CTMS2 CTMS1 CTMS0

-

-

-

IEC

RST:

0

0

0

0

0

0

0

0

UACR - AUXILIARY CONTROL REGISTER

IEC = 1, ENABLE IRQ TO CPU

BY A CHANGE OF STATE

ON CTS INPUT.

IEC = 0, NO IRQ IS GENERATED TO CPU

BECAUSE OF A CHANGE ON CTS

BGR=1, SET 2 OF BAUD RATES IS SELECTED

BGR=0, SET 1 OF BAUD RATES IS SELECTED

CTMS[2:0} SHOULD BE SET TO 110