HT82A834R datasheet(3/49 Pages) HOLTEK

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Pin Assignment

Pin Description

Pin Name

I/O

Description

PA0~PA7

I/O

Bidirectional 8-bit input/output port. Each bit can be configured as a wake-up input by a

configuration option. Software instructions determine if the pin is a CMOS output or Schmitt

trigger input with or without a pull-high resistor (by configuration option).

AVDD2

Audio power amplifier positive power supply

ROUT

Right driver analog output

LOUT

Left driver analog output

AVSS2

Audio power amplifier negative power supply, ground

AVSS1

Audio DAC negative power supply, ground

BIAS

A capacitor should be connected to ground to increase half-supply stability

MUSIC_IN

Power amplifier signal source if register bit SELW =

²1². The analog signal input will amplify by

the power amp then output to ROUT and LOUT at the same time.

AVDD1

Audio DAC positive power supply

AVDD3

ADC positive power supply

VAGRef

ADC analog ground reference voltage (should left open or connect a bypass capacitor

(Ex:100 pF) to ground)

VAG

ADC analog ground voltage (should connect a bypass capacitor (Ex:1 uF) to ground)

TI+

OP AMP non-inverting input

TI-

OP AMP inverting input

OP AMP gain setting output

HT82A834R

Rev. 1.00

August 27, 2007

H T 8 2 A 8 3 4 R

4 8 S S O P - A

P A 3

P A 2

P A 1

P A 0

A V D D 2

R O U T

L O U T

A V S S 2

A V S S 1

B I A S

M U S I C _ I N

A V D D 1

A V D D 3

V A G R e f

V A G

T I +

T I -

T G

A V S S 3

P B 7

P B 6

P B 5

P B 4

D V S S 2

P A 4

P A 5

P A 6

P A 7

D V S S 1

V 3 3 O

U S B D P

U S B D N

D V D D 1

R E S E T

O S C O

O S C I

P C 0 / B Z

P C 1 / T M R 0

P C 2 / T M R 1

P C 3

P C 4 / S D O

P C 5 / S D I

P C 6 / S C S

P C 7 / S C K

P B 0

P B 1

P B 2

P B 3

4 8

4 7

4 6

4 5

4 4

4 3

4 2

4 1

4 0

3 9

3 8

3 7

3 6

3 5

3 4

3 3

3 2

3 1

3 0

2 9

2 8

2 7

2 6

2 5

1 0

1 1

1 2

1 3

1 4

1 5

1 6

1 7

1 8

1 9

2 0

2 1

2 2

2 3

2 4

2 1 2 2 2 3 2 4

2 5

2 6

2 7

2 8

2 9

3 0

3 1

3 2

3 3

3 4

3 5

3 6

3 7

3 8

3 9

4 0

1 0

1 1

1 2

1 3 1 4 1 5 1 6 1 7 1 8 1 9 2 0

4 8

4 1

4 2

4 3

4 4

4 5

4 6

4 7