MT8841 查看數據表（PDF） - Mitel Networks

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产品描述 (功能)

生产厂家

MT8841

CMOS Calling Number Identification Circuit

Mitel Networks 

MT8841

TIP/RING

PWDN

2 sec

channel seizure Mark state

checksum

First Ringing

500ms

(min)

Input FSK

Data

200ms

(min)

Second

Ringing

OSC2

CD *

DATA

tPU

tIAL

High (Input Idle)

tPD

tIAH

High (Input Idle)

DCLK

DR *

* with external pull-up resistor

Figure 9 - Input and Output Timing (Bellcore CND Service)

TIP/RING

DATA

start

stop

start

stop

start

stop

b7 1 0 b0 b1 b2 b3 b4 b5 b6 b7 1 0 b0 b1 b2 b3 b4 b5 b6 b7 1 0 b0 b1 b2

tIDD

start

b7

stop

b0 b1 b2 b3 b4 b5 b6 b7

start

b0 b1 b2 b3 b4 b5 b6 b7

stop

start

b0 b1 b2

stop

DCLK

DR *

tCRD

* with external pull-up resistor

Figure 10 - Serial Data Interface Timing

5-19

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