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LUCL9313AP

Line Interface and Line Access Circuit Full-Feature SLIC and Ringing Relay for TR-57 Applications

Agere -> LSI Corporation 

L9313 Line Interface and Line Access Circuit

Full-Feature SLIC and Ringing Relay for TR-57 Applications

Pin Information

Data Sheet

September 2001

FB2

FB1

LCF

BGND

RPWR

VBAT1

VBAT1

BGND

TIE B′

TIE A′

NC

6 5 4 3 2 1 44 43 42 41 40

7

39

8

38

9

37

10

36

11

35

12

L9313AP

34

13

33

14

32

15

31

16

30

17

29

18 19 20 21 22 23 24 25 26 27 28

TXI

NC

ITR

VTX

ICM

RGDET

DGND

VDD

LATCH

RESET

B0

Figure 2. 44-Pin PLCC

12-3522g (F)

Table 1. Pin Descriptions

Pin Symbol Type

Name/Function

1

LCTH

2

VREF

3

OVH

4

VPROG

5

CF2

6

CF1

7

FB2

I Loop Closure Program Input. Connect a voltage source to this point to program

the loop closure threshold. Voltage source may be external and must be connected

through a resistor, or derived via a resistor divider from VREF. A programmable

external voltage source may be used to provide software control of the loop closure

threshold.

O SLIC Internal Reference Voltage. Output of internal 2.35 V SLIC reference volt-

age.

I Overhead Voltage Program Input. Connect a voltage source to this point to pro-

gram the overhead voltage. Voltage source may be external or derived via a resistor

divider from VREF. A programmable external voltage source may be used to provide

software control of the overhead voltage. If a resistor or voltage source is not con-

nected, the overhead voltage will default to approximately 5.5 V (sufficient to pass

3.14 dBm in to 900 Ω). If the default overhead is desired, connect this pin to ground.

I Current-Limit Program Input. Connect a voltage source to this point to program

the dc current limit. Voltage source may be external or derived via a resistor divider

from VREF. A programmable external voltage source may be used to provide soft-

ware control of the loop closure threshold.

— Filter Capacitor. Connect a capacitor from this node for filtering.

— Filter Capacitor. Connect a capacitor from this node to OVH to control the rate of

change of the overhead voltage. If controlled overhead is not desired, leave this

node open.

— Polarity Reversal Slowdown Capacitor. Connect a capacitor from this node to

ground to control the rate of battery reversal. If controlled battery reversal is not

desired, leave pin is open.

8

Agere Systems Inc.

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