MSM6946RS Ver la hoja de datos (PDF) - Oki Electric Industry

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MSM6946RS

300 bps Single Chip FSK MODEM

Oki Electric Industry 

¡ Semiconductor

PIN DESCRIPTIONS

Power

Name

DG

AG

VA

VD

Pin No.

I/O

RS GS-K

15 19 —

19 23 —

24 33 —

26 35 —

Description

Ground reference of VD (digital ground)

Ground reference of VA (digital ground)

Supply voltage (+12 V nominal)

Supply voltage (+5 V nominal)

MSM6926/6946

Clocks

Name

X1

X2

CLK

Pin No.

I/O

RS GS-K

Description

1 41 — Master clock timing is provided by either a series resonant crystal (3.579545 MHz

±0.01%) connected across X1 and X2, or by an external TTL/CMOS clock driving

2

42

—

X2 with AC coupling. In this latter case, X1 is left unconnected.

See Fig. 10.

3 43 O 873.9 Hz clock output. This clock is used to implement external delay circuits etc.

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