TA1383AFG Datasheet, PDF (8/47 Pages) Toshiba Semiconductor – NTSC Chroma Decoder, Multi-Point Scan Sync Processor, H/V Frequency Counter IC for Color TV

TA1383AFG
Bus Control Functions
Write Function
Signal
READ SW
INPUT SW
H/V FREQ
AFC-RAN
FREQ DET SW
Function
Power-On Initial Value
Switches Read Mode.
Switches Read Mode.
0: READ MODE 2 (counts frequency)
1: READ MODE 1 (self diagnosis)
Switches luminance, chroma, and sync signals.
000: SYNC1/Y1/C1
001: SYNC2/Y1/C1
010: SYNC2/Y2/C2
011: SYNC2/Y3/CbCr (PbPr)
100: D-SYNC1/Y3/CbCr (PbPr) 101: D-SYNC1/RGB
110: HD/VD/Y3/CbCr (PbPr)
111: HD/VD/RGB
Switches horizontal oscillation frequency and vertical pull-in range.
000: Horizontal oscillation frequency 15.734 kHz, vertical pull-in range
224.5H to 297H (262.5H at quiescent)
001: Horizontal oscillation frequency 31.5 kHz, vertical pull-in range 48H to
612H (525H at quiescent)
010: Horizontal oscillation frequency 33.75 kHz, vertical pull-in range 48H to
636H (562.5H at quiescent)
011: Horizontal oscillation frequency 45 kHz, vertical pull-in range 48H to
848H (750H at quiescent)
100: Horizontal oscillation frequency 15.734 kHz, forced vertical pull-in
range 262.5H
101: Horizontal oscillation frequency 15.734 kHz, vertical pull-in range
32.5H to 297H (at multi-windows)
110: D5 (1125P/60 Hz) input mode (H: 33.75 kHz Free-run, V: 48H to
636H)
Internal clamping pulse, internal H-BLK and HD output are generated
by inputted sync.
When no-signal inputted, the clamp pulse, the H-BLK and VD output
are switched to free-run signals of 33.75 kHz/562.5H. And then, HD
output is gone.
Set AFC-Mode = (111) and INPUT SW = (100), when this mode used.
111: RGB Input Mode (H frequency 33.75 kHz Free-run, V pull-in range
48H to 740H)
Input HD signal is used as clamp pulse. HD/VD-OUT outputs are
remade of input signals. (H-pull-in range: 5.7 kHz to 120 kHz, V-pull-in
range: 47 Hz to 688 Hz, HD input width: 0.2 µs to 10 µs, VD input
width: 3 µs to 1.45 ms)
When no-signal inputted, the clamp pulse, the H-BLK and VD output
are switched to free-run signals of 33.75 kHz/562.5 H. And then, HD
output is gone.
Set AFC-Mode = (111) and INPUT SW = (111), when this mode used.
In this mode, when TEST = 01, V-pull-in range becomes 0 to 688 Hz.
Then, VD output is gone when no-input.
Switches horizontal AFC pull-in range.
Switches pull-in range of 525I/P, 750P, and 1125I horizontal frequencies.
0: NORMAL 1: Narrow
Switches frequency counting input.
Switches input pin for counting frequency.
00: 525I1 (rejects pulse of 1.75 µs or less.) (pins 2, 4, and 30)
01: 525I2 (inputs H-sync for AFC. (and rejects pulse of 0.3 µs or less.) )
(pins 2, 4, and 30)
10: D-SYNC2 (pin 6)
11: HD/VD (pins 5 and 7)
Note: To count frequency, use Bus Mode (10/11). However, note that in Bus
Mode (00/01), frequencies such as 525P, 750P, and 1125I cannot be
counted. In this mode (00/01), frequencies may not be counted accurately
due to weak electric fields or ghosts.
Self diagnosis
(1)
SYNC1/Y1/C1
(000)
H: 15.734 kHz
V: 224.5H to 297H
(000)
NORMAL
(0)
D-SYNC2
(10)
8
2005-09-05