PIN DESCRIPTION (L3030)

Pin

Symbol

Function

1

TST

This pin is connected internally for test purpose. It should not be used as a tie point for

external components.

2

REF

Bias Set

3

AGND

Analog Ground

4

VSS

– 5V

5

VDD

+ 5V

6

N.C.

Not connected.

7

CZS

AC Feedback Input

8

ACF

AC Line Impedance Synthesis

9

ZAC

AC Impedance Adjustement

10

11

12

TST

These pins are connected internally for test purpose. It should not be used as a tie point

for external components.

13

VOUT

Two wire unbalanced output.

14

CM

Capacitor Multiplier Input

15

RC

DC Feedback Input

16

IT

Transversal Line Current

17

RDC

DC Feeding System

18

EIA

Read/write Command

19

NCS

Chip Select Command

20

DIO

Data Input/output

21

DCKL

Clock Signal

22

DGND

Digital Ground

23

N.C.

Not connected.

24

N.C.

Not connected.

25

N.C.

Not connected.

26

CI

Input/output Changing Command

27

C1

State Control Signal 1

28

C2

State Control Signal 2

29

N.C.

Not connected.

30

N.C.

Not connected.

31

IL

Longitudinal Line Current

32

CRTS

Ringtrip Det. & TTX Shaping

33

TTXIN

Teletaxe Signal Input

34

RGTTX

TTX Filter Level Compensation

35

TTXF

TTX Filter Input

36

ZB

Balancing Network

37

38

39

TST

These pins are connected internally for test purpose. It should not be used as a tie point

for external components.

40

TX

4W Sending Output

41

RX/RG

4W Receiving and Ring Input

42

VBIM

Battery Image Input

43

44

TST

These pins are connected internally for test purpose. It should not be used as a tie point

for external components.

L3000S - L3030

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