Pad Assignment

Pad Coordinates

Unit:

mm

Pad

No.

XY

Pad

No.

XY

1

-553.30

430.40

8

553.30

-523.50

2

-553.30 -133.50

9

553.30

-190.30

3

-553.30 -328.50

10

553.30

4.70

4

-553.30 -523.50

11

553.30

340.30

5

-220.10 -523.50

12

374.90

523.50

6

-25.10

-523.50

13

-279.30

523.50

7

308.10

-523.50

Chip size: 1460

* The IC substrate should be connected to VSS in the PCB layout artwork.

Pin Description

Pin Name

I/O

Internal

Connection

Description

CE

I

CMOS IN

Chip enable, active low.

No internal pull-high resistor.

X2

O

Oscillator

The system oscillator consists of an inverter, a bias resistor, and the required load

capacitor on chip.

The oscillator function can be implemented by Connect a standard 3.579545MHz

crystal to the X1 and X2 terminals.

X1

I

VSS

¾¾

Negative power suppl, ground

NC

¾¾

No connection

D0~D3

I

CMOS IN

Pull-high

or Floating

Data inputs for the parallel mode

When the IC is operating in the serial mode, the data input terminals (D0~D3) are

included with a pull-high resistor. When the IC is operating in the parallel mode,

these pins become floating.

S/P

I

CMOS IN

Operation mode selection input

S/P=

²H²: Parallel mode

S/P=

²L²: Serial mode

CLK

I

CMOS IN

Pull-high

or Floating

Data synchronous clock input for the serial mode

When the IC is operating in the parallel mode, the input terminal (CLK) is included

with a pull-high resistor. When the IC is operating in the serial mode, this pin be-

comes floating.

DATA

I

CMOS IN

Pull-high

or Floating

Data input terminal for the serial mode

When the IC is operating in the parallel mode, the input terminal (DATA) is included

with a pull-high resistor. When the IC is operating in the serial mode, this pin be-

comes floating.

DTMF

O

CMOS OUT

Output terminal of the DTMF signal

VDD

¾¾

Positive power supply, 2.5V~5.5V for normal operation

HT9200A/HT9200B

Rev. 1.40

2

August 30, 2004

C E

S / P

1

8

2

9

3

1 0

4

1 1

5

1 2

6

1 3

7

( 0 , 0 )

X 2

X 1

V S S

D 1

D 2

D 0

D 3

C L K

D A T A

D T M F

V D D