7442 データシートの表示（PDF） - SANYO -> Panasonic

部品番号

コンポーネント説明

メーカー

7442

PIP Controller

SANYO -> Panasonic 

LC7442, 7442E

Even/Odd Field Determination Circuit

Since this determination is based on the phase difference between the falling edges of OV and OH, these must

be input with the following timing.

Note: KV and KH are similar to the above.

a = 0.02 to 0.40 H

b = 0.60 to 0.98 H

However, if the PLL aspect correction function is used, these values will differ.

See the separate “APPLICATION NOTE” document for details.

The horizontal synchronization signal equalizing pulse must be removed.

Synchronization Signals

• The LC7442 OH and KH pin inputs are set assuming that OH (and KH) are delayed 1 µs from the video signal

horizontal synchronization signal.

Video signal

OH or KH

• Since noise on the synchronization signal input pins (KV, KH, OV and OH) results in image distortion, care must be

used in wiring these signals.

• Since the sub-screen will be distorted if the synchronization signals are unstable, we recommend turning off display in

such cases.

Sub-Screen Output Timing

Notes: a: The frame data position shown here is for the timing when registers WKAJ0 and 1 are 00.

b: Whether frame data is present or not is switched by the size of the KOUT pulse.

No. 4412-19/22

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