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參數資料

Initialization

1. RES pin: Reset

The RES pin must be set low when power is first applied.

2. Internal control registers

These LSIs go to the standby state (SBY = high) after a reset. When developing microprocessor software, be sure to

send data to all registers. Also be sure to send zero data to the zero registers at addresses 14H and 15H.

I2C Control

Data format

Data 1 is stored at register address A1. For data 2, A1 is incremented and data 2 is stored at A1 + 1.

Slave Address

Synchronization Signal Input

1. Sync separator

The LC74401E requires sync separated (including AFC processing) V and H signals for both the main and sub-

screens. Since V is used for frame determination and H is used as the PLL reference signal, these signals must be

input reliably.

The standard values are set up assuming that the H-M and H-S inputs are delayed about 1 s from the video signal

horizontal synchronization signal.

Equalizing pulses must be removed.

Since noise in the synchronization signal will disrupt the screen image, care must be used in the layout of these lines.

We recommend turning off sub-screen display when the synchronization signals are unstable, since such instability

can disrupt the sub-screen image.

No. 4872-16/19

LC74401E, 74402, 74402E

R/W

相關代理商/技術參數	參數描述
LC74402E	制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:PIP Controllers
LC74403E	制造商:未知廠家制造商全稱:未知廠家功能描述:Peripheral IC
LC7441	制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:Picture-in-picture Controller for TVs and VCRs
LC74411	制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:PIP Controller
LC74411N	制造商:SANYO 制造商全稱:Sanyo Semicon Device 功能描述:PIP Controller

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