EM84530 Ver la hoja de datos (PDF) - ELAN Microelectronics

Número de pieza

componentes Descripción

Fabricante

EM84530

2-IN-ONE MOUSE CONTROLLER

ELAN Microelectronics 

FUNCTIONAL BLOCK DIAGRAM

EM84530

2-IN-ONE MOUSE CONTROLLER

Preliminary

DATA/RXD

CLK/RTS

OPT

X1

X2

Y1

Y2

C

O

M

P

A

R

A

T

O

D

ME

OT

TE

IC

OT

NO

R

R

COUNTER

MULTIPLEXER

DATA

I/O

D

L

E

B

M

O

U

R

N

C

E

COMMAND

& STATUS

OR PNP IO

TIMING

CONTROLLER

OSCR

OSC.OUT

SYSTEM CLOCK

GENERATOR

RC

OSCILLATION

PIN DESCRIPTIONS

Symbol

I/O

OPT

I/O

OSC.OUT

O

OSCR

I

CLK/RTS

I/O

DATA/RXD

I/O

R

I

M

I/O

L

I/O

X1

I

X2

I

Y1

I

Y2

I

VSS

VDD

Function

INPUT: 200kΩ pull low to VSS.

When OPT is connected to VDD, EM84530 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 respectively.

The RC oscillation clock output. Or 3mA sink current output for X, Y photo

emitters.

Connect 50kΩ±1% precise resistor for oscillation.

Connect directly to 8042 auxiliary port CLK line in PS/2 mode or connect directly

to RS-232C RTS pin in serial mode. Auto-detect the operating port by this pin.

Connect directly to 8042 auxiliary port DATA line in PS/2 mode or connect

directly to RS-232C RXD pin in serial mode.

Three key-switches inputs. 200kΩ resistor pull low.

Three step dynamic input impedance. If OSC.OUT is not connected to LEDs, the

dynamic input impedance will be off.

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

Negative power.

Power line.

* This specification are subject to be changed without notice.

6.28.1999 2

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