Specifications

Contents
PROGRAMMABLE REGISTERS ................................ 10-5
Serial Status Register (SST)
.................................. 10-6
Serial Command Register (SCM)
............................. 10-8
Serial Mode Register (SMD)
................................. 10-9
Serial Interrupt Mask Register (SIMK)
....................... 10-10
OPERATION
.................................................. 10-11
Reset
..................................................... 10-11
Serial Data Format
......................................... 10-12
Baud Rate
................................................. 10-13
Interrupt and Polled Communication
......................... 10-15
Programming
.............................................. 10-16
Chapter 11. SERIAL COMMUNICATIONS (82050) 11-1
OVERVIEW
.................................................... 11-2
ZT 8832 SPECIFICS
............................................ 11-3
FUNCTIONAL DESCRIPTION
.................................. 11-4
Read/Write Control
.......................................... 11-5
Receiver
.................................................... 11-5
Transmitter
................................................. 11-5
Modem Control
............................................. 11-6
Interrupt Control
............................................ 11-6
PROGRAMMABLE REGISTERS
................................ 11-7
Transmit and Receive Buffer
................................. 11-8
Line Control
................................................ 11-8
Line Status
................................................ 11-11
Modem Control
............................................ 11-13
Modem Status
............................................. 11-15
Divisor Latch
.............................................. 11-17
Interrupt Identify
........................................... 11-18
Interrupt Enable
............................................ 11-19
OPERATION
.................................................. 11-20
Reset
..................................................... 11-20
Serial Data Format
......................................... 11-21
Baud Rate
................................................. 11-22
Interrupt and Polled Communication
.......................... 11-23
RS-485 Serial Communications
.............................. 11-23
Programming
.............................................. 11-24