Quatech MPA-200/300, RS-422/485 user manual Table of Contents

	TABLE OF CONTENTS
1 INTRODUCTION		2
2 HARDWARE INSTALLATION		4
3 SCC GENERAL INFORMATION		5
3.1	Accessing the registers	6
3.2 Baud Rate Generator Programming		9
3.3 SCC Data Encoding Methods		10
4 JUMPER BLOCK CONFIGURATIONS		11
4.1	J4 - Interrupt Configuration	11
4.2	J5 & J6 - Interrupt Level Selection	11
4.3	J10 - Transmit DMA Channel Selection	12
4.4	J11 - Receive DMA Channel Selection	13
4.5	J7 - Line Driver Control Selection	13
4.6 J8 - SYNCA to RLEN control		14
5 ADDRESSING		15
6 INTERRUPTS		17
7 DIRECT MEMORY ACCESS		18
7.1	Using Terminal Count to Generate an Interrupt	20
8 CONFIGURATION REGISTER		21
9 COMMUNICATIONS REGISTER		23
10 DTE / DCE Configuration		25
10.1 DTE Configuration		26
10.2 DCE Configuration		27
11 EXTERNAL CONNECTIONS		29
11.1 MPA-200 and EIA-530 Compatibility		32
11.2 Null-Modem Cables		32
12 DEFINITION OF INTERFACE SIGNALS		33
13 SPECIFICATIONS		37

Quatech Inc., MPA-200/300 Manual