W91630 Просмотр технического описания (PDF) - Winbond

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W91630

10-MEMORY TONE/PULSE DIALER WITH REDIAL FUNCTION

Winbond 

W91630 SERIES

Pin Description, continued

SYMBOL PIN NO. I/O

FUNCTION

HKS

DP /C5

DTMF

10

I Hook switch input. Conventional CMOS input with an internal

protection diode and a pull-high resistor to VDD.

HKS = VDD: On-hook state. Chip in sleep mode, no operation.

HKS = VSS: Off-hook state. Chip enabled for normal operation.

During dialing, this input ignores HKS = VDD for durations of less

than 150 mS (i.e., dialing is not terminated).

11

O Open drain dialing pulse output (Figure 1).

Flash key causes DP /C5 to be active in both tone mode and pulse

mode.

12

O During pulse dialing, maintains low state at all times.

In tone mode, outputs a dual or single tone.

Detailed timing diagram for tone mode is shown in Figure 2(a, b).

OUTPUT FREQUENCY

Specified

Actual

Error %

R1

697

699

+0.28

R2

770

766

-0.52

R3

852

848

-0.47

R4

941

948

+0.74

C1

1209

1216

+0.57

C2

1336

1332

-0.30

C3

1477

1472

-0.34

VDD, VSS

P MUTE

14, 6

5

I Power input pins.

O The P MUTE is a conventional CMOS inverter output. It is high

during pulse dialing sequence and flash break. Otherwise, it

remains low.

Publication Release Date: June 1996

-3-

Revision A3

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