L9219A 데이터 시트보기 (PDF) - Agere -> LSI Corporation

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L9219A

Low-Cost Line Interface with Reverse Battery and Dual Current Limit

Agere -> LSI Corporation 

L9219A/G Low-Cost Line Interface

with Reverse Battery and Dual Current Limit

Pin Information

Data Sheet

November 2001

4

3

2

1

28 27 26

RCVP 5

25 VTX

RCVN 6

24 TXI

LCTH 7

23 VITR

DCOUT 8

28-PIN PLCC

22 NSTAT

VBAT

9

21 NC

PR 10

20 RTSP

CF2 11

19 RTSN

12

13

14

15

16

17

18

Figure 2. 28-Pin PLCC

12-3558 (F)

Table 1. Pin Descriptions

PLCC

1

2

3

4

5

6

Symbol

IPROG

FB2

FB1

VCC

RCVP

RCVN

Type

I

—

—

—

I

I

Description

Current-Limit Program Input. A resistor to DCOUT sets the dc current limit of the

device. The value of current limit set via this resistor may be increased via logic control

(see state table for additional detail).

Polarity Reversal Slowdown. Connect a capacitor to ground to control the rate of bat-

tery reversal.

Polarity Reversal Slowdown. Connect a capacitor to ground to control the rate of bat-

tery reversal.

5 V Power Supply.

Receive ac Signal Input (Noninverting). This high-impedance input controls the ac

differential voltage on tip and ring.

Receive ac Signal Input (Inverting). This high-impedance input controls the ac differ-

ential voltage on tip and ring.

4

Agere Systems Inc.

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