connected to the chroma (Video 2) A/D converter. The
signal must be AC-coupled.
Pins 72-75 – Video Input 1–4 (Fig. 4–11)
These are the analog video inputs. A CVBS or S-VHS
luma signal is converted using the luma (Video 1) AD
converter. The VIN1 input can also be switched to the
chroma (Video 2) ADC. The input signal must be
AC-coupled.
Pin 76 – Supply Voltage, Analog Component Inputs
Front-End V
SUPAI
This pin is connected with 220 nF/1.5 nF/390 pF to
GND
AI
Pin 77 – Ground, Analog Component Inputs Front-End
GND
AI
Pin 78 – Reference Voltage Top VREF (Fig. 4–8)
Via this pin, the reference voltage for the analog compo-
nent A/D converters is decoupled. The pin is connected
with 10
µF/47
nF to the Analog Component Signal
Ground Pin.
Pin 79 – Fast Blank Input FB1IN (Fig. 4–10)
This pin is connected to the analog fast blank signal. It
controls the insertion of the RGB1/YC
r
C
b
1 signals. The
input signal must be DC-coupled.
Pin 80 – Signal GND for Analog Component Inputs
AISGND (Fig. 4–10)
This is the high quality ground reference for the compo-
nent input signals.
ADVANCE INFORMATION
56
Micronas
MICRONAS [ MICRONAS ]
