CMX860 查看數據表（PDF） - CML Microsystems Plc

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CMX860

Telephone Signalling Transceiver

CML Microsystems Plc 

Telephone Signalling Transceiver / Least Cost Router

CMX860

CMX860

D6, D1, E1

Pin No.

22

23

24

25

26

27

28

Signal

Description

Name

HD

CSN

COMMAND

DATA

SERIAL

CLOCK

REPLY DATA

IRQN

DVDD

Type

I/P

I/P

I/P

I/P

T/S

O/P

Power

Schmitt trigger input to the Hook signal detector.

Connect to DVSS if Hook Detector not used.

The 'C-BUS' chip select input from the µC.

The 'C-BUS' serial data input from the µC.

The 'C-BUS' serial clock input from the µC.

A 3-state 'C-BUS' serial data output to the µC.

This output is high impedance when not sending

data to the µC.

A ‘wire-ORable’ output for connection to a µC

Interrupt Request input. This output is pulled

down to DVSS when active and is high impedance

when inactive. An external pullup resistor is

required i.e. R1 of Figure 2.

The digital positive supply rail. Levels and

thresholds within the device are proportional to

this voltage.

I/P = Input O/P = Output BI = Bidirectional T/S = 3-state Output NC = No Connection

© 2002 Consumer Microcircuits Limited

7

D/860/5

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