Customer Display/Mag Card Reader Port (Com3); Com3 Configuration - Ab28-F And Ab28-G - Micros Systems Workstation 4 LX Service Manual

Table of Contents

WS4 Technical Overview

Customer Display/Mag Card Reader Port (COM3)

REF: AB28 Sheets 18 and 19

UART2 in Super IO U15, is dedicated to COM3. The system board revision

determines how this port is configured, as described in the sections below.

On all WS4 system boards, COM3 is shared between the Mag Stripe Reader and

Customer Display interfaces. Figure 2-22 shows how these devices are attached to

the COM3 UART on the AB28-F and AB28-G System Boards. The Mag Stripe

Reader sends card swipe data to U15 over the RXD3 line, while TXD3 carries

serial data to customer display connectors J1 and CN4. Note that J1 and CN4 do

not include a RX pin, and Mag Stripe Reader connector CN10 does not include a

TX Pin. The interface speed is 9600 baud.

Figure 2-22: COM3 Configuration - System Boards AB28-F and AB28-G

As the WS4 entered production in 2003, support for an optional IEE 2x20 pole

display was included. An integrated version of the 2x20 VFD customer display

was not available.

The LCD Customer Display

In late 2004, a new customer display option, the MICROS LCD Customer Display

was introduced. See page 2-44 for more information about this display. The

graphics capable 240x64 Customer Display serial interface runs at a baud rate of

115K. The LCD Customer Display is an intelligent device, including an 8-bit

micro controller with programmable firmware.

Two versions of the LCD Customer Display are available.

•

A Rear or integrated version that physically attaches to the workstation and

receives power and data from system board connector J1.

•

Pole mount version that receives power and data from CN4 on the IO panel.

2-38

Workstation 4 and 4 LX Field Service Guide

Table of Contents

Workstation 4