AVPro
®
5003
Triple SCART A/V Switch
DESCRIPTION
The AVPro
®
5003
is a low cost IC that performs
switching of analog audio and video signals. The
device accepts analog audio and video inputs from
three external sources, typically a video encoder
IC/stereo DAC, an auxiliary SCART connector, and
a VCR SCART connector. The input signals from
these sources are presented to a set of internal
multiplexers that perform the SCART switching
function. Outputs are provided to the VCR and
auxiliary SCART connectors, as well as a TV
SCART connector and an RF modulator. Video
outputs are buffered to drive 150 Ω loads. Audio
outputs are buffered to provide 2 Vrms output into
600 ohm s. Typical ap plications f or the 5003 i nclude
digital video recorders (DVRs) and digital receivers
for satellite, cable, and terrestrial television.
August 2000
FEATURES
• SCART connections for TV, VCR, AUX
• Integrated video drivers
• Integrated audio drivers
- Negative supply eliminates AC coupling
caps
• 5-bit audio attenuation for TV output
- Attenuation from 0 to 31 dB, 1 dB steps
- Mute of TV outputs
• Serial port control of SCART switching
• 64-lead MQFP packaging (JEDEC MO-108)
BLOCK DIAGRAM
BLANK
TV_C
TV_R
TV_G
TV_B
SVHS_Cout
AUX_YCout
TV_YCout
TV_Mod
VCR_YCout
TV_Fnc
DO_0
DO_1
VCR_Lout
VCR_Rout
Lout
TV_Lout
TV_Rout
Rout
A
UX_Lout
AUX_Rout
GND
GND
GND
GND
VCC
VCC
VCC
VCC
VEE
VEE
VEE
VEE
VDD
Mono
Rin
Lin
Rbias
Vref
VCR_Rin
VCR_Lin
Tgen
A
UX_Rin
AUX_Lin
SDATA
SCLK
Enc_Y
Enc_YC
VCR_YCin
AUX_YCin
AUX_Fnc
A
UX_B
Enc_B
Enc_G
AUX_G
SVHS_Cin
Enc_C
Enc_R
AUX_R
EBLANK
ABLANK
Mux
Mux
Mux
Mux
Comparitor
Mux
Mux
Mux
Mux
TV Fn
Output
Digital
Output
Mux
Mux
Mux
Serial
Port
Timing
Gener
ator
Vref and
Bias
VCR_Fnc
VCC
