m52390fp Renesas Electronics Corporation., m52390fp Datasheet - Page 17

• Manufacturer Part Number: m52390fp
• Description: Ntsc/pal Encoder
• Manufacturer: Renesas Electronics Corporation.

M52390FP
Usage Precautions
(1) Typical values for input signals
(2) Setting the Free Run frequency
This IC generates the fsc by means of the VCXO circuit.
Consequently, the VCXO oscillation frequency must always be set to fsc before the IC is used, by following the
procedure outlined below.
1. Connect [9] (VIDEO IN) to GND, and set the Free Run mode.
2. Set the [2] (OFFSET R) voltage when SYNC was input to [4] (C. SYNC IN) to V
, and apply a voltage of V
= 0.5
4
4
V to [4] (OFFSET R).
3. Fix C.[2] (SYNC IN) in the High state. (5 V applied)
4. Adjust the output frequency of [5] (TRAP) to the trimmer capacitor of [7] (VCXO IN), and set it to fsc.
Rev.1.0, Sep.22.2003, page 17 of 22