Contents
MPA-200/300
QUATECH, INC
Page
Warranty Information
Page
Compliances Electromagnetic Emissions
Table of Contents
Quatech Inc., MPA-200/300 Manual
Introduction
MPA-200 board drawing
Hardware Installation
IRQ DMA/DRQ
SCC General Information
Accessing the registers
RR0
RR1
RR2
RR3
WR0
WR1
WR2
WR3
Baud Rate Generator Programming
SCC Data Encoding Methods
Jumper Block Configurations
J4 Interrupt Configuration
J5 & J6 Interrupt Level Selection
IRQ3 IRQ4 IRQ5 IRQ6 IRQ7
IRQ10 IRQ11 IRQ12 IRQ14 IRQ15
J10 Transmit DMA Channel Selection
J11 Receive DMA Channel Selection
J7 Line Driver Control Selection
J8 Synca to Rlen control
Synca Rlen OUT
Addressing
Base Address = 3F8H
Page
Interrupts
Direct Memory Access
Page
Reqa
Configuration Register
D1 -RXSRC, Receive DMA Source
D0 -TXSRC, Transmit DMA Source
Communications Register
TM ST Llen Rlen Rcken Tcken Rxden Txden
D1 -RECEIVER Enable
D0 -TRANSMITTER Enable
DTE / DCE Configuration
DTE Configuration
Rrclk Rtclk Trxca Tclk Ttclk
DCE Configuration
DCE Clock Configuration
External Connections
DTR DTR/REQA DSR Dcda +RRCLK Trxc Test Mode
CTS Ctsa +DSR Dcda
Test Mode
Null-Modem Cables
Circuit AB Signal Ground Connector Notation Dgnd
Circuit CC Data SET Ready DSR Connector Notation +DSR,-DSR
Connector Notation +TXD,-TXD
Connector Notation +RXD,-RXD
Connector Notation +RTCLK,-RTCLK
Connector Notation +RRCLK,-RRCLK
Circuit CA Request to Send RTS Connector Notation +RTS,-RTS
Circuit CB Clear to Send CTS Connector Notation +CTS,-CTS
Circuit RL Remote Loopback RL Connector Notation Rlbk
Circuit CD DTE Ready DTR Connector Notation +DTR,-DTR
Circuit LL Local Loopback LL Connector Notation Llbk
Circuit TM Test Mode TM Connector Notation Test Mode
Specifications
MPA-200/300 Version March
