CS61535A
APPENDIX A. RECOMMENDED CRYSTAL SPECIFICATIONS
Cirrus Logic telecommunication devices that offer jitter attenuation require crystals with specifications for
frequency pullability. The crystal oscillation frequency is dictated by capacitive loading, which is con-
trolled by the chip. Therefore, the crystals must meet the following specifications.
6.176 MHz Crystal Performance Specifications
Parameter
Total Frequency Range
(Note 1)
Operating Frequency
Cload = 11.6 pF
Cload = 19.0 pF
Cload = 37.0 pF
(Note 2)
(Note 3)
(Note 2)
Min
-
6.176803
6.175846
-
Typ
370
-
6.176000
-
Max
390
-
6.176154
6.175197
Units
ppm
MHz
MHz
MHz
8.192 MHz Crystal Performance Specifications
Parameter
Total Frequency Range
Operating Frequency
Cload = 11.6 pF
Cload = 19.0 pF
Cload = 37.0 pF
(Note 1)
(Note 2)
(Note 3)
(Note 2)
Min
-
8.192410
8.191795
-
Typ
210
-
8.192000
-
Notes:
1. With Cload varying from 11.6 to 37.0 pF at a given temperature.
2. Measured at -40 to 85°C.
3. Measured with Saunders 150D meter at 25 °C.
Max
245
-
8.192205
8.191590
Units
ppm
MHz
MHz
MHz
DS40F3
35