CXA3272R
Pin
No.
Symbol
38 NC
39 NC
40 B OUT
41 FB B
42 GND2
43 G OUT
44 FB G
45 R OUT
46 FB R
47 VCC2
48 SIG.C
49 VCC1
50 NC
51 NC
52 TEST5
53 NC
54 VREG
55 OSD R
56 OSD G
57 OSD B
58 RESET
59 R/R-Y
60 G/Y
61 B/B-Y
62 SYNC IN
63 VSEP TC
64 GND1
I/O
Description
— NC
— NC
O B signal output
O Time constant for B signal DC voltage feedback∗2
— Analog 12V GND
O G signal output
O Time constant for G signal DC voltage feedback∗2
O R signal output
O Time constant for R signal DC voltage feedback∗2
— Analog 12V power supply
I R, G and B output DC voltage adjustment
— Analog 3V power supply
— NC
— NC
O Test 5 (Leave open or connect to 3V (VCC1 or VDD).)
— NC
— Reference power supply
I External digital R input (common with test)∗3
I External digital G input (common with test)∗3
I External digital B input (common with test)∗3
I System reset∗4
I R/R-Y signal input
I G/Y signal input
I B/B-Y signal input
I Sync signal input (composite)∗5
O Time constant for vertical sync separation
— Analog 3V GND
∗1 HD (CSYNC)/VD signal is input during 3Vp-p separate SYNC and CSYNC input.
∗2 Feedback circuit smoothing capacitor connection for R, G and B output DC level control. Low leakage
capacitor is used because of high impedance.
∗3 External digital signal input. There are two threshold values Vth1 and Vth2. One of R, G and B exceeds
Vth1, all RGB are black levels; exceeding Vth2, white level. Connect to GND during unused.
∗4 TG block system reset. By connecting to GND, this pin is system reset. Capacitance is connected
between this pin and GND, and used.
∗5 SYNC input. Video signal with SYNC is input.
–4–