ZL49010/11, ZL49020/21, ZL49030/31

Data Sheet

2

Zarlink Semiconductor Inc.

specific call progress signals. The ZL4902x and ZL4903x can be used with a crystal or a ceramic resonator without

additional components. A power-down option is provided for the ZL4901x and ZL4903x.

Figure 2 - Pin Connections

Pin Description

Pin #

Name

Description

4903xDD

4903xDC

4902x

4901x

32

1

1

INPUT

DTMF/CP Input. Input signal must be AC coupled via

capacitor.

64

2

-

OSC2

Oscillator Output.

76

3

3

OSC1

(CLK)

Oscillator/Clock Input. This pin can either be driven by:

1)

an external digital clock with defined input logic

levels. OSC2 should be left open.

2)

connecting a crystal or ceramic resonator between

OSC1 and OSC2 pins.

89

4

4

Ground. (0 V)

13

11

5

5

SD

Serial Data/Call Progress Output. This pin serves the

dual function of being the serial data output when clock

pulses are applied after validation of DTMF signal, and

also indicates the cadence of call progress input. As

DTMF signal lies in the same frequency band as call

progress signal, this pin may toggle for DTMF input. The

SD pin is at logic low in powerdown state.

14

13

6

6

ACK

Acknowledge Pulse Input. After ESt or DStD is high,

applying a sequence of four pulses on this pin will then

shift out four bits on the SD pin, representing the decoded

DTMF digit. The rising edge of the first clock is used to

latch the 4-bit data prior to shifting. This pin is pulled

down internally. The idle state of the ACK signal should

be low.

10

18

17

16

15

14

13

12

11

VDD

NC

NC

ESt/DStD

NC

ACK

NC

SD

NC

1

2

3

4

5

6

7

8

9

NC

INPUT

PWDN

OSC2

NC

OSC1

NC

NC

VSS

INPUT

PWDN

CLK

VSS

VDD

ACK

SD

INPUT

OSC2

OSC1

VSS

VDD

ESt/

ACK

SD

ZL49010/1

ZL49020/1

ZL49030DC/1DC

8 PIN PLASTIC DIP

18 PIN PLASTIC SOIC

1

2

3

4

8

7

6

5

1

2

3

4

8

7

6

5

1

2

3

4

5

6

7

8

9

10

11

12

20

19

18

17

16

15

14

13

NC

NC

INPUT

PWDN

NC

NC

OSC1

OSC2

VSS

20 PIN SSOP

NC

VDD

NC

NC

ACK

SD

NC

NC

ESt/DStD

DStD

ESt/

DStD

ZL49030DD/1DD

NC

NC