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參數資料
| 型號： | TB1308FG |
| 廠商： | Toshiba Corporation |
| 元件分類： | 通用總線功能 |
| 英文描述： | Component SW, Sync Separation and H/V Frequency Counter IC for TVs |
| 中文描述： | 組件西南，同步分離和H / V頻率計數器集成電路電視 |
| 文件頁數： | 10/33頁 |
| 文件大?。?/td> | 660K |
| 代理商： | TB1308FG |
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TB1305FG, TB1308FG
2007-07-11
10
Register Name
Function
VD-POL
Polarity detection to VD-IN
0: Positive 1: Negative
Detects the width from the VD-IN pin to determine whether it is negative or not. When the High level of
the input VD-IN is wider than approx 4.5 ms, VD-POL shows 1.
H FORMAT
Horizontal format detection
0000: 15.625/15.75kHz 0001: 28.125kHz
0010: 31.25/31.5kHz
0011: 33.75kHz
0100: 37.5/37.9kHz
0101: 45/48kHz
0110: 64kHz/67.5kHz
0111: 75kHz
1000 56.25kHz
1001 ~ 1111: Undefined
Detects a horizontal format (horizontal frequency).
NOTE1: Format detection errors such as the following can occur when suppressed syncs are input. See
NOTE3 in the function description on Automatic sync processing mode, too.
525i input
→
525p detected, 625i input
→
625p detected, 1125i input
→
1125p detected
525p/625p input
→
No V-sync detected
NOTE2: When 525i, 625i, 1125/50i or 1125/60i signal is input, H FORMAT data can be incorrect caused
by the pseudo-syncs for copy guard or the equalizing pulses.
V FORMAT
Vertical format detection
00: 50 Hz
01: 60 Hz
10 ~ 11: Undefined
Detects a vertical format (horizontal frequency) according to V FREQ DET data.
H FM2
Horizontal format detection 2
0: Known
1: Unknown
Detects whether an input is in one of the defined formats or not. This is based on H FORMAT data.
NOTE: H FM2 may indicate Unknown, when 525p input with pseudo sync signal for copy guard is input.
V FM2
Vertical format detection 2
0: Known
1: Unknown
Detects whether an input is in one of the defined formats or not. This is based on V FORMAT data.
H IN
Input detection to horizontal syncs
0: No signal
1: Signal
V IN
Input detection to vertical syncs
0: No signal
1: Signal
V-SYNC-W
V-SYNC width detection
0: Wide
1: Narrow
Detects V-SYNC width for detecting 1250i format.
Under A-SYNC = 1 (ON), V-SYNC-W shows 1, when the VD width from the VD-IN pin is narrower than
approx 69
μ
s, or when the V-SYNC width from the SYNC-IN pin is narrower than approx 27
μ
s.
VERSION
IC version identification
00: TB1305FG
01: TB1308FG
10: ----
11: ----
V FREQ DET
Counts the vertical frequency of an input selected by SYNC SW.
0000000: Over 3.5kHz 1001111: 44Hz or less
1010000
～
1111111: No signal
How to calculate a vertical frequency (Y):
Convert data read from V FREQ DET into decimal value and call it X.
Vertical frequency (Y)
=
1
÷
(X
×
2.8607
×
10
-4
) [Hz]
The error range of X is
1 to
+
1.
H FREQ DET
Counts the horizontal frequency of an input selected by SYNC SW.
00000000: No signal 11111111: Over 85kHz
How to calculate a horizontal frequency (Y):
Convert data read from H FREQ DET into decimal value and call it X.
Horizontal frequency (Y)
=
1
÷
(0.003
÷
X) [Hz]
The error range of X is
1 to
+
1.
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