EM84513

Mouse Controller

4 •

•••

Product Specification (V0.9) 06.16.2006

(This specification is subject to change without further notice)

6 Pin Descriptions

Pin No.

Symbol

I/O

Function

1

VDD

-

Positive power supply.

2

OSC. OUT

O

Oscillation clock output.

3

Z1

I

4

Z2

I

Z-axis inputs.

Photo mode: Three step dynamic input impedance.

Mechanical mode : 13.2kohm resistor pull low.

5

CLK

I/O

Connect to 8042 auxiliary port CLK line.

6

DATA

I/O

Connect to 8042 auxiliary port DATA line.

7

OPT

I/O

INPUT: Internal 210Kohm pull low to VSS.

When OPT is connected to VDD, EM84513 will enter test mode. In

test mode, L will be the output of X1, while M will be the output of

X2. Toggling R key can change these output to be Y1, Y2 or Z1,

Z2 respectively.

OUTPUT: 2KHz Z-axis LED driving source.

"1"= VDD, "0"= floating.

High duty is about 60us.

8

VSS

-

Ground.

9

R

I

10

M

I

11

L

I

Three key-switches inputs, with internal 150Kohm resistor pull low.

12

X1

I

13

X2

I

14

Y1

I

15

Y2

I

X and Y-axis input. Three step dynamic input impedance.

Use current comparator to measure photo-couples "ON”, or "OFF".

16

OSCR

I

RC mode oscillation with external 51Kohm±5% resistor connected

to ground.

7 Function Description

7.1 Legacy PS/2 Mouse Operating

7.1.1 Operating Mode

There are four operating modes in PS/2 mouse:

7.1.1.1 Reset Mode

In this mode a self-test is initiated during power-on or by a Reset command. After reset

signal,

PS/2 mouse will send:

Completion code 0xAA & ID code 0x00.

Set default :sampling rate: 100 reports/s

non-autospeed

stream mode

2 dot/count

disable