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MPA-2000/3000

QUATECH, INC.

MPA-2000/3000

Category

Serial Controller

Chipset Controller

Intel Corporation

I /O Options Supported

Serial port

Maximum Onboard Memory

N/A

CONNECTIONS

Purpose

Location

Purpose

Location

DCE connector - female DB-25

CN1

DTE connector - male DB-25

CN2

Note: Either CN1 or CN2 is installed, but not both.

DRIVER CONTROL

Setting

J2

Drivers always enabled

pins 1 & 2 closed

Drivers enabled by communications register bit D0

pins 2 & 3 closed

RECEIVER CONTROL

Setting

J2

Receivers always enabled

pins 4 & 5 closed

Receivers enabled by communications register bit D1

pins 5 & 6 closed

DMA REQUEST CHANNEL

Setting

J3

DTR/REQA for transmitting data

pins 1 & 2 closed

RDY/REQB for receiving data

pins 2 & 3 closed

MISCELLANEOUS TECHNICAL NOTES

J1 is factory configured - do not alter.