TS7514 datasheet(8/19 Pages) STMICROELECTRONICS

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DTMF DIALING DATA REGISTER (RDTMF REGISTER)

Address

Data

Tone Frequency (Hz)

Low

High

001

697

770

852

941

1209

1336

1477

1633

Notes : This register is not initialized on power-up.

X : don’t care value.

P : 1,0 or X depending upon RPROG content.

DATA REGISTER FOR THE TRANSMISSION ATTENUATOR (RATE REGISTER)

Address

Data

Attenuation

(dB)

Output Transmit

Level (dBm)

On Line Level (dBm)

Coupler Gain (- 6dB)

010

+ 4

– 2

+ 3

+ 2

– 4

+ 1

– 5

– 6

– 1

– 7

– 2

– 8

– 3

– 9

– 4

– 10

– 5

– 11

– 6

– 12

– 7

– 13

– 8

– 14

– 9

– 15

Infinite

< – 64

< – 70

Infinite*

< – 64 *

< – 70 *

* Power-up configuration.

LINE MONITORING PROGRAMMING REGISTER (RWLO REGISTER)

Address

Data

Line Monitoring In Transmit

Mode Relative Level (dB)

Line Monitoring In Receive

Mode Relative Level (dB)

011

– 10

– 20

– 31

– 42

– 10

– 20

– 31

0.42 VPP

– 10dB

– 20dB

– 31dB

< – 60dB*

* Power-up configuration.

Note : Signaling frequency is a square wave signal at 2982Hz.

TS7514

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