Call Progress Tone Detector

5

MX633 - PRELIMINARY INFORMATION

© 1997 MX

•COM Inc.

www.mxcom.com Tele: 800 638-5577 910 744-5050

Fax: 910 744-5054

Doc. # 20480135.003

4800 Bethania Station Road, Winston-Salem, NC 27105-1201 USA

All trademarks and service marks are held by their respective companies.

3. External Components

XTAL/

CLOCK

C1

C4

R1

X1

C2

8

7

2

3

4

5

6

DETECT1

MX633P

ENABLE

SIGIN

DETECT2

C3

1

XTAL

Figure 2: Recommended External Components

R1

1 M

Ω±10%

C1

33pF

±20%

C2

33pF

±20%

C3

±20%

C4

1.0µF

±20%

X1

Note 1

3.579545MHz

refer to sec.5.1

Table 2: Recommended External Components

Notes:

1.

For best results, a crystal oscillator design should drive the clock inverter input with signal levels of at least 40% of

assistance, consult your crystal manufacturer.