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SPCA711A Datasheet(PDF) 3 Page - List of Unclassifed Manufacturers

Part No. SPCA711A
Description  DIGITAL VIDEO ENCODER FOR VIDEOCD
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Maker  ETC1 [List of Unclassifed Manufacturers]
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SPCA711A
Mnemonic
PIN No.
Type
Description
Cr and Cb sequence.
SVIDEO
14
I
SVIDEO select input pin.
A logic high selects Y/C output.
A logic low
selects composite video output.
SLEEP
13
I
Power save mode.
A logic high on this pin puts the chip into power-
down mode. This pin is equal to reset pin. An external logic high pulse
should input to the pin when power on.
MODEA
17
I
Mode configuration pin.
MODEB
18
I
Mode configuration pin.
CLK
19
I
27MHz crystal oscillator input. A crystal with 27MHz clock frequency can
be connected between this pin and XTALO.
XTALO
20
O
Crystal oscillator output.
TEST
2
I
Test pin. These pins must be connected to DGND.
VREFIN
9
I
Voltage reference input.
An external voltage reference must supply
typical 1.235V to this pin.
A 0.1
µF ceramic capacitor must be used to
de-couple this input to GND.
The decoupling capacitor must be as
closed as possible to minimize the length of the load.
This pin may be
connected directly to VREFOUT.
VREFOUT
8
O
Voltage reference output.
It generates typical 1.2V voltage reference
and may be used to drive VREFIN pin directly.
FSADJ
5
-
Full-Scale adjust control pin.
The Full-Scale current of D/A converters
can be adjusted by connecting a resistor (RSET) between this pin and
ground.
COMP
6
-
Compensation pin.
A 0.1
µF ceramic capacitor must be used to bypass
this pin to VAA. The lead length must be kept as short as possible to
avoid noise.
VBIAS
10
-
DAC bias voltage.
Potential normally 0.7V less than COMP.
VDD
31
-
Digital power pin
DGND
30
-
Digital ground pin
CVBSY
4
O
Composite/Luminance output.
This is a high-impedance current source
output.
The output format can be selected by the PAL pin.
The
CVBSY can drive a 37.5
Ω load.
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
Ω load.




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