HFC-SUSB Cologne Chip AG, HFC-SUSB Datasheet - Page 69
HFC-SUSB
Manufacturer Part Number
HFC-SUSB
Description
Isdn S/t HDLC Basic Rate Controller
Manufacturer
Cologne Chip AG
Datasheet
1.HFC-SUSB.pdf
(82 pages)
- Current page: 69 of 82
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863C EC2
7.3
Figure 12: Oscillator circuitry for S/T clock
The values of C1, C2 and R1, R2 depend on the used quartz.
For a load-free check of the oscillator frequency the C4O clock of the PCM/GCI/IOM2 bus should be
measured (HFC-S USB as master, S/T interface deactivated, 4.096 MHz frequency intented on the
C4IO).
:e\i " !
G N D
Oscillator circuitry for S/T clock
C 1
C 2
24. 576 MH z
Q 1
R 1
R 2
C LK I
C LK O
Part List
Name
R1
R2
C1
C2
Q1
Value
330
1 M
47 pF
47 pF
24.576 MHz quartz
Cologne
Chip
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