¡ Semiconductor

MSM6926/6946

4/25

PIN DESCRIPTIONS

Power

DG

15

19

—

AG

19

23

—

24

33

—

Supply voltage (+12 V nominal)

26

35

—

Supply voltage (+5 V nominal)

Name

Pin No.

RS GS-K

I/O

Description

Clocks

X1

141

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

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

See Fig. 10.

X2

2

42

—

CLK

343

O

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

Name

Pin No.

RS GS-K

I/O

Description

—