M61250BFP Datasheet, PDF (17/50 Pages) Renesas Technology Corp – NTSC 1 chip TV signal processor

M61250BFP
Bus Functions
WRITE
FUNCTION
VIF
RF delay adj
SIF
VIF VCO adj
BIT SUB DATA
ADD
7 00H D0-D6
6 10H D0-D5
VIF freq. 58.75 1
VIF Video out
3
gain
AFT defeat
1
VIF defeat
1
01H D6
06H D5-D7
04H D6
07H D7
Audio ATT
Audio EXT
7 03H D0-D6
1 02H D6
Audio mute
1 03H D7
VIDEO
Video tone
6
Contrast control 7
EXTRGB
1
contrast clip
C. clip level
1
04H D0-D5
05H D0-D6
05H D7
02H D5
Y DL time adj
Y DL fine adj
EXT
Y/C
Y SW LPF
2 06H D0-D1
1 06H D2
1 06H D3
1 06H D4
1 13H D5
Video tone
1
sharp
Video mute
1
TRAP off
1
TRAP fine adj 2
Black stretch off 1
02H D3
02H D7
02H D4
12H D0-D1
02H D1
Black stretch
2
charge
Black stretch
2
discharge
Gamma control 2
CHROMA Tint control
7
Color control
7
Take off
1
US/JPN SW
1
Killer level
1
14H D4-D5
14H D6-D7
12H D2-D3
07H D0-D6
08H D0-D6
02H D0
15H D1-D3
15H D0
Fsc
1 09H D5
DISCRIPTION
RF AGC delay point adjustment
VIF VCC free-running frequency adjustment
(adjust by setting VIF Defeat = 1 to center the AFT output)
IF 45.75/58.75 switching; 0: 45.75, 1: 58.75 MHz
Pin 58 IVF video-detection-wave output level adjustment
AFT output on/off (defeat) switching; 0: AFT on (non defeat), 1: Defeat
VIF AGC gain normal/minimum switching; 0: AGC function,
1: Defeat (minimum gain)
Pin 51 audio output level adjustment
Audio internal signal and external signal input switching;
0: internal, 1: external
Pin 53 audio direct output on/off (mute) switching;
0: audio on (non-muted), 1: mute
Sharpness level control
Contrast level control
EXT RGB contrast lower-limit clipping on/off; 0: clipping on, 1: clipping off
EXT RGB contrast lower-limit clipping level switching;
0: low (20H), 1: high (40H)
Y signal delay adjustment
Y signal delay fine adjustment
Video input pins 41/38 switching; 0: pin 41, 1: pin 38
Pins 38/41 composite input/YC input switching; 0: composite, 1: Y/C mode
Pin 31 (Y SW OUT) output f-characteristic switching;
0: flat, 1: LPF (fc=700 kHz)
Video tone level two level (sharp/soft) switching; 0: standard (soft), 1: sharp
Y signal output on/off (mute) switching; 0: mute off, 1: mute
Y signal chroma trap on/off switching; 0: trap on, 1: trap off
Chroma trap frequency fine adjust
Black stretch circuit on/off switching;
0: black stretch on, 1: black stretch off
Black stretch charge time constant adjustment
Black stretch discharge time constant adjustment
Gamma level adjustment
Hue control
Color level control
Chroma BPF take-off function on/off switching; 0: BPF; 1: take off
US mode/JPN mode switching; 100: US mode, 011: JPN mode
Colorkiller sensitivity switching (active shallow direction);
0: 41 dB,1: 34 dB
X’tal oscillation circuit forced free-running mode; 0: off, 1: free-running
INI-
TIAL
40H
20H
NOTE
0
80H
0
0
00H
0
0
20H V Latch
40H V Latch
0
V Latch
0
X0H
0
0
V Latch
0
V Latch
0
0
0
0
X0H
0
0XH
0XH
X0H
40H V Latch
40H V Latch
0
0
0
0
Rev.1.0, Sep.23.2003, page 17 of 49