MH88630 Ver la hoja de datos (PDF) - Mitel Networks

Número de pieza

componentes Descripción

Lista de partido

MH88630

Central Office Interface (LS/GS)

Mitel Networks 

Preliminary Information

MH88630

Pin Description (Continued)

Pin #

Name

Description

19

RD2 Relay Driver 2 (Output): Open collector sinks current when RC2 is high. Diode clamp

protected.

20

RC2 Relay Control 2 (Input): A logic high will activate the relay (K2) to provide proper

biasing to the tip and ring. This input control is used for Ground Start Trunk only.

21

VR

Audio Receive (Input). The 4-wire audio signal input to the interface.

22

GSR Gain Setting Receive (Input). Normally used to set the receive gain with an external

resistor connected to RXOUT (pin 23).

23

RXOUT Audio receive signal (output) to the RXIN- (pin 32), via an external decoupling capacitor

(C3).

24

VCC+ Positive analog Power Supply Voltage (+12V).

25

VCC- Negative analog Power Supply Voltage (-12V).

26

TXIN- Transmit (Input). Different audio signal from VTR+ (pin 8), via an external capacitor

(C4).

27

TXIN+ Transmit (Input). Different audio signal from VTR- (pin 11), via an external decoupling

capacitor (C1).

28

GSX Gain Setting Transmit (Input). Normally used to set the transmit gain with an external

resistor connected to VX (pin 29).

29

VX

Audio Transmit (Output). The 4-wire audio signal output from the interface.

30

NETBAL Network Balance (Input). When there is no connection (open), the network is balanced

at 600Ω. When this pin is grounded, the network is balanced at AT&T compromise.

31

RXIN+ Differential Receive (Input). Connects to analog ground via an external capacitor (C2).

32

RXIN- Differential Receive (Input). Connects to RXOUT (pin 23) via an external capacitor

(C3).

33

AGND Analog Ground.

34

VEE Negative Power Supply (-5V).

35

VDD Positive Power Supply (+5V).

36

TG

Tip Lead Ground Detect (Output). Active low.

37

RC

Reverse Loop current Detect (Output). Active low.

38

RV

Ringing Voltage Detect (Output). Active low.

39

FC

Forward Loop Current Detect (Output). Active low

40

RG

Ring Lead Ground Detect (Output). Active low.

2-217

Share Link: