L3092N 查看數據表（PDF） - STMicroelectronics

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L3092N

SLIC KIT OPTIMIZED FOR APPLICATIONS WITH BOTH FIRST AND SECOND GENERATION COMBOS

STMicroelectronics 

L3000N - L3092

PIN DESCRIPTION (L3092)

N° Name

Description

1

VOUT Two wire unbalanced output carryng out the following signals reduced by 40:

1) DC voltage to perform the proper DC characteristic.

2) Ringing Signal

3) Voice Signal

2

RPC AC line Impedance Adjustment Protection Resistances Compensation

3

TX

Transmit Amplifier Output

4 COMP Comparator Input. This is the input comparator that senses the line voltage in power down and in

automatic stand-by, allowing off hook detection in this mode.

5

AUT

Aut. Input. It is a part of the digital interface. Loaded when CS is low.

6

MR

Master Reset Input. When it is connected to ground the SLIC is forced in power down. It has an

internal pull-up. (typ. 200KΩ) (*)

7 PWON Power on/power off input. This input is part of digital interface. Loaded when CS is low.

8

RING Ring Enable Input. This input is part of the digital interface. Loaded when CS is low.

9

CS

Chip Select Input.

10

GDK

Ground Key Output Enabled by CS Low.

11 ONHK On Hook/off Hook Output Enabled by CS Low.

12

C2

State control Signal 2.

13

C1

State Control Signal 1. Combination of C1 and C2 define operating mode of the high voltage part.

14 RGIN Low Level Ringing Signal Input.

15

CRT Ring Trip Detection

16

IL

Longitudinal Line Current Input

IL =

Ib − Ia

100

17

RDC

DC Feeding System

18

IT

Transversal Line Current Input

IT = Ia + Ib

100

19 ACDC AC - DC Feedback Input.

20

VDD

Positive Supply Voltage, +5V.

21

REF

Bias Setting Pin.

22

VSS Negative Supply Voltage, -5V.

23

GND Analog and Digital Ground.

24

LIM

Limiting Current Selection Input. Loaded when CS is low.

25

PDO

Power Down Output. Driving the high voltage part L3000N through the bias resistor RH.

26

ZB

TX Amplifier Negative Input performig the two to four wire conversion. In case of application with

2nd Generation COMBO performing also the echo cancellation (ex TS5070/5071), this pin must

be connected to GND.

27

CAC

AC Feedback Input.

28

ZAC

AC Line Impedance Synthesis.

(*) Must be connected to a proper capacitor for power on reset or to VDD if not used. Should not be left open.

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