1 oscillator, Figure 4-9, Telco clock structure continued – Artesyn ATCA-8310 Installation and Use (May 2014) User Manual
Page 95: Functional description
Functional Description
ATCA-8310 Installation and Use (6806800M72E)
95
4.6.1
Oscillator
The ACS8520B is clocked by an external 12.80MHz oscillator. This means that the Free-run and
Holdover stability is determined by the oscillator quality.
The following Oscillator is used:
CMACStratum 3, E2747, 3.3V
Figure 4-9
Telco Clock Structure Continued
TO11: MFrSync (2kHz)
Zone3
TO10: FrSync (8kHz)
TO5: (77.76MHz)
TO3: (32.768MHz)
TO4: (25MHz)
TO9: T4 (1.544/2.048MHz)
TO1: (6.48MHz)
TO6: DS3_CLK
(34/44/51MHz)
ACS
8520B
ADM
I11
166.7Hz
166Hz
3x DSP-FPGA
3x DSP-FPGA
TO2: (16,384MHz)
TO2: (16.384MHz)
TO7: RTM_CLK_TO7
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