EM92547BP Ver la hoja de datos (PDF) - ELAN Microelectronics

Número de pieza

componentes Descripción

Fabricante

EM92547BP

CALLER ID FSK DECODER

ELAN Microelectronics 

EM92547A/B/D

CALLER ID FSK DECODER

Timing Diagrams

Description

Symbol Min. Typ. Max. Unit

OSC start up

TOSC --

2

4 ms

Carrier detect low

TCDL 10 15 20 ms

DATA OUT to Carrier det low

TDOC -- 10 20 ns

SHORTDATA to mark det valid TSDV 10 12.5 15 Ms

Power up low to FSK(setup time) TSUP -- 15 20 ms

End of FSK to Carrier Detect high TCDH 25 30 35 ms

FSK format

There are some differences on signal spec. between Bell 202 and ITU-T V.23.

Item

Bell 202

ITU-T V.23

Mark freq. (logic 1)

1200±1%

1300±1.5%

Space freq. (logic 0)

2200±1%

2100±1.5%

Transmission rate

1200 bps

1200 bps

Data format

serial, asynchronous

serial, asynchronous

Modulation type

analog phase coherent FSK analog phase coherent FSK

FSK timing (‘CS’ –– Channel Seizure, ‘M’ –– Mark, FSK data –– FSK data signal)

1. DATA OUT timing

On-hook FSK :

TIP/RING

/RING TIME

/RD

/CD

DATA OUT

OSC

/PWUP

FIRST RING

0.5 SEC

2 SECONDS

CS M

0.5 SEC

FSK data

SECOND RING

2 SECONDS

TOSC

TSUP

TCDL

TDOC

1010.. 1

DATA

3.58MHz

TCDH

________________________________________________________________________________________________________________________________________________________

* This specification are subject to be changed without notice.

1998

~7~

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