When a function pin is set as an output, the output
level for the pin is determined by the state of the two
LSBs Register 2, according to the following table:
Bits
xxxxxx00
xxxxxx01
xxxxxx10
xxxxxx11
Output voltage
~0 V
~6 V
~ 11 V
~ 11 V
Function
Normal TV
16:9 aspect
Peritelevision
Peritelevision
AVPro® 5002B
Dual SCART A/V Switch
The function output circuit includes short circuit
protection. When a function pin is in the 6V or 11V
output mode, if the SCART connection is shorted to
ground, then the output is disabled. Likewise, when
a function pin is in the 0V output mode, if the
SCART connection is connected to a voltage
source, then the output is disabled. The load for the
function outputs is designed to be 10k or higher.
Note that both the Aux_Fnc pin and the TV_Fnc pin
can be set as outputs simultaneously, however they
will have the same output voltage.
Mux
Aux_Lout
Lin
Aux_Lin
Rin
Aux_Rin
Audio1
Audio2
Mux
Aux_Rout
A
Mux
A
A
Mux
A
Mux
Mux
Mux
Mux
Mux
B
B
Mux
Mux
Mux
Mux
Attenuator: A = 0 or 20 dB attenuation
Volume Control: B = 0 to 31 dB attenuation
Figure 2: 5002B Audio Switching Block Diagram
Mod_Mono
Lout
TV_Lout
TV_Rout
Rout
5