W523AXXX

- 4 -

4. PIN DESCRIPTION

NAME

I/O

DESCRIPTION

OSC

I

Ring oscillator input

VDD1

-

Positive power supply

TEST

I

Test pin. Internally pulled low

RESET

I

Active low to reset all devices as POR function. Internally pulled high.

TG1

I

Direct trigger input 1. Internally pulled high

TG2

I

Direct trigger input 2. Internally pulled high

*TG5

I

Direct trigger input 5. Internally pulled high

*TG6

I

Direct trigger input 6. Internally pulled high

VSS1

-

Negative power supply

LED1

O

LED1 output

STPA/BUSY

O

Stop signal A or Busy signal

STPB

O

Stop signal B

LED2/STPC

O

LED2 output or Stop signal C

STPD

O

Stop signal D

STPE

O

Stop signal E

SPK-

O

PWM output

AUD/SPK+

O

Current type output or PWM output for speaker

VSS2

-

Negative power supply

VDD2

-

Positive power supply

*: TG3, TG4 for W523A008 and W523A010