CS61577

28

DS155F2

APPENDIX A. RECOMMENDED CRYSTAL SPECIFICATIONS

Cirrus Logic telecommunication devicesthat offer jitter attenuation require crystalswith specifications for

frequency pullability. The crystal oscillation freque ncy is dictated by capaci tive loading, which is con-

trolled by the chip. Therefore, the crystals must meet the following specifications.

6.176 MHz Crystal Performance Specifications

8.192 MHz Crystal Performance Specifications

Notes:

2. Measured at -40 to 85

°C.

3. Measured with Saunders 150D meter at 25

°C.

Parameter

Min

Typ

Max

Units

Total Frequency Range

(Note 1)

-

370

390

ppm

Operating Frequency

(Note 2)

(Note 3)

(Note 2)

6.176803

6.175846

-

-

6.176000

-

-

6.176154

6.175197

MHz

MHz

MHz

Parameter

Min

Typ

Max

Units

Total Frequency Range

(Note 1)

-

210

245

ppm

Operating Frequency

(Note 2)

(Note 3)

(Note 2)

8.192410

8.191795

-

-

8.192000

-

-

8.192205

8.191590

MHz

MHz

MHz