Pin
No.
Symbol
14 – (R-Y) IN
15 – (B-Y) IN
16 SGND2
17 YS1/VM
18 R1IN
19 G1IN
20 B1IN
21 YS2
Equivalent circuit
CXA2050S
Description
Color difference signal inputs.
Clamped to 5.5V at the burst timing.
14
1.5k
15
Standard input levels for 75% CB:
B-Y: 1.33Vp-p
R-Y: 1.05Vp-p
70k
100µA
10k
17
20k
GND for the RGB block.
Input which combines YS1SW control with
VM circuit ON/OFF function. Supports
with ternary.
VMSW (VthVM = 0.9V)
VILVM ≤ 0.3V VM circuit ON
VIHVM ≥ 1.5V VM circuit OFF
YS1SW (VthYS1 = 2.5V)
VILYS1 ≤ 1.7V Y/color difference input
selected
VIHYS1 ≥ 3.3V RGB1 input selected
Setting YS1OFF of I2C bus to 1, input for
this pin is invalid.
200 Analog R, G and B signal inputs.
18
Input a 0.7Vp-p (no sync, 100 IRE) signal
via a capacitor.
19
The signal is clamped to 5.7V at the burst
20
timing of the signal input to the HSIN
30k
input (Pin 53).
100µA
YM/YS2SW YS2 control input.
When YS2 is high, the RGB2 block signal
is selected; when YS2 is low, the YS1SW
21
40k
output signal is selected.
VILMAX = 0.4V
VIHMIN = 1.0V
22 YM
100µA
YM/YS2 SW YM control input.
When YM is high, the YS1SW output
signal is attenuated by 6dB.
22
VILMAX = 0.4V
40k
VIHMIN = 1.0V
–6–