Renesas PROM Programming Adapter PCA7408 Instrukcja Użytkownika Strona 64

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M37221M4H/M6H/M8H/MAH–XXXSP/FP M37221EASP/FP
Rev.1.00 Oct 01, 2002 page 64 of 110
REJ03B0134-0100Z
8.11.3 Clock for OSD
The following 2 types of clocks can be selected for OSD display.
Main clock supplied from XIN pin
Main clock supplied from XIN pin divided by I.5
Clock from the ceramic resonator or the LC or oscillator from the
pins OSC1 and OSC2
• Clock from the ceramic resonator or the quartz-crystal oscillator
supplied from pins OSC1 and OSC2.
The OSD clock for each block can be selected by the OSD clock
selection register (address 00ED16).
When selecting the main clock, set the oscillation frequency to
8 MHz.
Fig. 8.11.10 OSD clock selection Circuit
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