SA2532KB datasheet(7/21 Pages) SAMES

Nome de Peças	SA2532KB

Descrição Electrónicos	SINGLE CHIP TELEPHONE FOR INDIA

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Fabricante Electrônico	SAMES [Sames]

Página de início	http://www.sames.co.za

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SA2532KA/B

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Moving Cursor Procedure

To accommodate easy and uncomplicated redialling

(LNR) behind a PABX, a sliding cursor protocol is

implemented.

If new entries match the previous

RAM contents, pressing the LNR key will dial out

the remaining digits. If there is an error in matching,

the LNR will be inhibited until next on-hook, and the

RAM will contain the new number. In the case of

mixed mode LNR operation the redialling in the

SA2532KA is limited to the LD digits so as to

prevent unauthorised access to banking passwords

etc. The SA2532KB will dial out all digits (i.e. both

the pulse and the DTMF digits) during mixed mode

re-dialling.

DTMF Tones

The DTMF generator provides 7 frequencies,

namely:

Low group

Digit 1-2-3

697Hz

Digit 4-5-6

770Hz

Digit 7-8-9

852Hz

Digit *-0-#

941Hz

High group

Digit 1-4-7-*

1209Hz

Digit 2-5-8-0

1336 Hz

Digit 3-6-9-#

1477Hz

The MF output levels are -6/-8 dBm and the

preemphasis is 2.6dB.

Tone Ringer

The Tone Ringer of the SA2532K incorporates a

Discriminator Circuit and a three tone Melody

Generator.

When a Valid Ring Signal is detected the Melody

generator is activated and creates a ringing signal

comprising

3

frequencies

F1

(1065Hz),

F2

(1420Hz) and F3 (1734Hz).

These frequencies are repeated in a sequence of 6

time slots constructed by the frequencies

F1

F2

F3

F1

F2

F3

This sequence is repeated 7 times per second.

Ring Frequency Discrimination

The Ring Frequency Discriminator assures that

signals with a frequency between 13 Hz to 70 Hz

are regarded as valid ring signals. When a valid ring

signal is detected, the melody generator is activated

and remains active as long as the ring signal is

present. Once the melody generator has been

started, the ring signal is continuously monitored

and the melody generator is instantly turned on or

off according to the momentary presence of a valid

or invalid ring signal respectively (until next POR of

off-hook).

Nº de peça semelhante - SA2532KB

Fabricante Electrônico	Nome de Peças	Folha de dados	Descrição Electrónicos
Sames	SA2532K	623Kb / 27P	SINGLE CHIP TELEPHONE DEMO BOARD

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Descrição semelhante - SA2532KB

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ams AG	AS2540	248Kb / 18P	Remote Controlled Single-Chip-Telephone
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Sames	AN1500A	623Kb / 27P	SINGLE CHIP TELEPHONE DEMO BOARD
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Nº de peça semelhante - SA2532KB

Descrição semelhante - SA2532KB

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