SC91415AP Ver la hoja de datos (PDF) - Silan Microelectronics

Número de pieza

componentes Descripción

Fabricante

SC91415AP

TONE/PULSE SWITCHABLE DIALER WITH LCD INTERFACE AND DUAL-TONE MELODY

Silan Microelectronics 

Silan

Semiconductors

SC91415 SERIES

Truth table

Operating State

HKS

Input / Output pin level

PO

XMUTE

(0) on-hook, idle state

H

F

F

(1) Off-hook line

L

F

F

(2) Off-hook, HF line

L

F

F

(3) On-hook, HF line

H

F

F

(4) Off-hook, HD line

L

F

L

(5) On-hook, HD line

H

F

L

Note : F = floating (high impedance); H = logic “High”; L = logic “Low” level.

HFO

L

L

H

H

L

L

HDO

L

L

L

L

H

H

G) Music on Hold

SC91415 series built-in a melody generator to generate dual-tone music on DTMF output pin. The music is designed

for telephone line at line holding.

H) SDO (Serial Data Output) function

The SDO is serial data output which format is same as UART protocol. SDO function is designed to drive LCD driver

and voice synthesizer. So the dialing numbers can be display on LCD screen with SC32100 (or SC32116). The SDO

signal consists of two start bits, six data bits and two stop bits. Each bit time is about 3.9 ms (256 Hz) and output

sequences are following by start bits, data bits (LSB to MSB) and stop bits.

ready

0

1

start bits

bit0

bit1

bit2

bit3

bit4

bit5

data bits

0

1

stop bits

HANGZHOU SILAN MICROELECTRONICS JOINT-STOCK CO.,LTD

Rev: 2.0

2001-11-13

12

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