JYTEK PCIe-69834, Руководство пользователя

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22 Operations
3.5.1 Internal Sampling Clock
The PCIe-
69834
internal 80MHz crystal oscillator acts as a
sam-pling clock for ADC.
3.5.2 External Reference Clock (PCIe- 69834P only)
The onboard PLL module allows REF_CLK to act as an external
reference clock input, such that when multi-card synchronization
for more than two modules is needed, a 10MHz clock source can
be provided to REF_CLK and API function utilized to switch syn-
thesizer input to the clock source at SMB connector REF_CLK,
and generate a precise 80MHz clock for ADC. as the synthesizer's
reference clock is the same for all modules, the generated 80MHz
clock is synchronous.