SPCA711A データシートの表示（PDF） - Unspecified

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SPCA711A

DIGITAL VIDEO ENCODER FOR VIDEOCD

Unspecified 

SPCA711A

Mnemonic PIN No. Type

Description

VAA

7

- Analog power pin

AGND

3,12

- Analog ground pin

MODE SELECTION

The master mode is selected when MASTER = 1; slave mode is selected when MASTER = 0. Two pins,

MODEA, MODEB, drive three different configuration registers. The most common operating modes can be

selected with these pins while in the master mode. In the slave mode, as well as the common operating modes,

are automatically determined from the timing of the incoming HSYNC* and VSYNC* signals.

NOTE: The term “common operating mode” refers to the North American NTSC and Western European PAL. Table 2

illustrates the multi-functionality of the mode pins in the master and slave mode. To access the more exotic video

formats, slave mode is preferred since the necessary registers are always accessible. If the master mode is

needed, the less common modes can still be programmed by first registering the modes as slave and then switching

to a master. During power-up, the MODE [3:2] pins configure the master registers, i.e., EFIELD and PAL625 are

written. Also, during power-up, the slave registers are reset to zero, i.e., YCSWAP.

Table 2. Mode Selection

The MASTER pin

0

1

PIN Description

MODEA

MODEB

YCSWAP

PALSA

EFIELD

PAL625

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