ta1383afg TOSHIBA Semiconductor CORPORATION, ta1383afg Datasheet - Page 9

• Manufacturer Part Number: ta1383afg
• Description: Ntsc Chroma Decoder, Multi-point Scan Sync Processor, H/v Frequency Counter Ic For Color Tv
• Manufacturer: TOSHIBA Semiconductor CORPORATION

H-SEP LVL
V-SEP LVL
D-SY2 SEP LVL
AFC-MODE
NOISE LVL
MONITOR
Signal
Switches sync separation level of horizontal sync signal.
Switches sync separation level of vertical sync signal.
Switches sync separation level of D-SYNC2 IN (pin 6).
Switches AFC gain.
Note: Set AUTO1 to 4 according to input signal status.
Switches noise detection level.
Switches MONITOR output.
Switches sync separation level of horizontal sync signal input to sync input
pins.
Switches sync separation level of vertical sync signal input to sync input pins.
Switches sync separation level of sync signal input to pin 6.
Switches AFC gain setting mode.
Switches noise detection level. Noise is detected only in NTSC signals (525I).
Noise detection result is reflected in BUS READ and AFC-GAIN operation (as
in AUTO1 to 3 modes).
Switches signal output from MONITOR OUT (pin 8).
Field identification output is valid for 525I and 1125I standard signal.
At 525I
At 525P
Three-level sync 00: 25% 01: 35% 10: 45% 11: 55%
At 525I
At 525P
Three-level sync 00: 25% 01: 35% 10: 45% 11: 55%
00: 20% 01: 30% 10: 40% 11: 50%
000: AUTO1 (normal: 0dB, at skew: +6dB, at noise: −12dB)
001: AUTO2 (AUTO1 + prevention against AFC disoperation at noise +
010: AUTO3 (Video input mode: AUTO2 + 0dB at V-SKEW detected)
011: AUTO4 (RF input mode: AUTO2 + 0dB at V-SKEW detected, however,
100: Forced +6dB
101: Forced 0dB
110: Forced −12dB
111: Forced Off (horizontal free running)
00: max
000: 1-bit DAC output (high)
001: 1-bit DAC output (low)
010: Field identification output (ODD: low, EVEN: high)
011: Noise detection output
100: V sync separation output at 525I
101: Skew detection output
110: Clamp pulse output
111: H/V-SYNC at D-SYNC2 input
stabilization of AFC in weak electric field + ghost prevention)
−12dB at normal. Also, AFC gain is not controlled by noise detection
result)
11: min
00: 20% 01: 27% 10: 34% 11: 40%
00: 20% 01: 30% 10: 40% 11: 50%
00: 40% 01: 50% 10: 60% 11: 70%
00: 20% 01: 30% 10: 40% 11: 50%
Function
9
Power-On Initial Value
TA1383AFG
Forced +6dB
DAC HIGH
2005-09-05
(100)
(000)
20%
40%
20%
max
(00)
(00)
(00)
(00)