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參數(shù)資料
| 型號： | SPCA701A |
| 廠商： | Electronic Theatre Controls, Inc. |
| 英文描述： | DIGITAL VIDEO ENCODER FOR VIDEOCD |
| 中文描述： | 數(shù)字影像光盤的視頻編碼器 |
| 文件頁數(shù)： | 3/16頁 |
| 文件大?。?/td> | 145K |
| 代理商： | SPCA701A |
SPCA701A
Sunplus Technology Co., Ltd. 3 Rev.: 0.2 1999.12.07
Preliminary
Mnemonic
PIN No.
Type
Description
directly to GND.
CVBSC
11
O
Composite/Chroma output. This is a high impedance current source
Output. The output format can be selected by the PAL pin. The pin
can drive a 37.5 load. If unused, this pin must be connected directly
to GND.
VBIAS
10
-
DAC bias voltage. Potential normally 0.7V less than COMP.
VDD
31
-
Digital power pin
DGND
30
-
Digital ground pin
VAA
7
-
Analog power pin
AGND
3,12
-
Analog ground pin
MODE SELECTION
Master mode is selected when MASTER = 1; slave mode is selected when MASTER = 0. Two pins, MODE
[3:2], drive three different configuration registers. The most common operating modes can be selected with
these pins while in master mode. In slave mode, 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 North American NTSC and Western European PAL
Table
2
illustrates the multi-functionality of the mode pins during master and slave mode. To access the more
exotic video formats, slave mode is preferred since the necessary registers are always accessible. If
master mode is needed, the less common modes can still be programmed by first registering the modes
as a slave, and then switching to a master. During power-up, the MODE [3:2] pins configure the master
registers; i.e., EFIELD, PAL625, are written. Also, during power-up, the slave registers are reset to zero,
i.e., YCSWAP.
Table 2. Mode Selection
PIN Description
The MASTER pin
MODE[3]
MODE[2]
MODE[1]
MODE[0]
0
YCSWAP
---
---
---
1
EFIELD
PAL625
---
---
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