參數(shù)資料
型號(hào)： TB1261F
元件分類： 消費(fèi)家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PQFP80
封裝： 14 X 20 MM, 0.80 MM PITCH, PLASTIC, QFP-80
文件頁數(shù)： 46/66頁
文件大?。?/td> 1538K
代理商： TB1261F
TB1261F/TB1262F
2002-6-30 50 / 66
Note
Items/Symbols
Bus
Bus conditions
conditions
Measurement methods
T15
Cross Talk from TV
to Analog RGB
/ CTTV-TX
RGB Mute:0
R cut off:128
DC rest.:2(100%)
Ysm Mode:1
Uni-color:127
RGB contrast:63
Others: Preset
(1) Input
a
sine
wave
signal
(f=4MHz,
Video
amplitude=0.5V(p-p)) with sync into Pin61.
(2) Connect Pin21, 22 and 23 to GND via a 0.1uF capacitor.
(3) Supply 2.5V to Pin20.
(4) Measure the amplitude at Pin14, that is VTX.
(5) Supply 0V to Pin20.
(6) Measure the amplitude of 4MHz signal at Pin14, that is
VTV.
(7) Calculate; "CTTV-TX"=20*log(VTX/ VTV)
T17
Analog RGB／RGB
Output Voltage Axes
Difference
／Δ
VR-G
／Δ
VG-B
／Δ
VB-R
RGB Mute:0
R/G/B cut off:128
Brightness:63
DC rest.:2(100%)
Color:0
Uni-color:127
Others: Preset
(1)Input a 0IRE signal with sync into Pin61.
(2)Connect Pin21, 22 and 23 to GND via 0.01μF.
(3)Measure the DC level of picture period at Pin12, 13 and 14,
that is RY/GY/BY.
(4)Supply Pin15 to 2.5V.
(5) Measure the DC level of picture period at Pin12, 13 and 14,
that is RT/GT/BT.
(6)Calculate;
Δ
R ＝ RT － RY
Δ
G ＝ GT － GY
Δ
B ＝ BT － BY
“ΔVR-G” ＝ ΔR － ΔG
“ΔVG-B” ＝ ΔG － ΔB
“ΔVB-R” ＝ ΔB － ΔR
T18
RGB Mute DC level
VRGBMUTE
RGB Mute:0/1
R/G/B cut off:128
Brightness:63
DC rest.:2(100%)
Color:0
Uni-color:127
Others: Preset
(1)Input a 0IRE signal with sync into Pin61.
(2)Set the IICBUS switch of RGBMUTE to 1
(3)Connect Pin21, 22 and 23 to GND via 0.01μF.
(4)Measure the DC level of picture period at Pin 14, that is
VRGBMUTE
(5)Reset RGBMUTE to 0 and set Blueback to 1
(6)Measure the DC level of picture period at Pin 14, that is VBB
UV6
Half Tone
Characteristics for Y
/ GHTY
Ysm Mode:0
Uni-Color:127
Color:0
RGB Mute:0
R cut off:128
DC rest.:2(100%)
Others: Preset
(1) Input a 100(IRE) (=0.7Vp-p) white signal with sync into
Pin61.
(2) Measure the output picture amplitude at Pin14 that is
VHTYOFF.
(3) Supply Pin20 1.5V.
(4) Measure the output picture amplitude at Pin14 that is
VHTYON .
Calculate;"GHTY"=20*log(VHTYON/VHTYOFF)
UV7
Half Tone
Characteristics for C
/ GHTC
RGB Mute:0
Y Mute:1
Uni-Color:127
Others: Preset
(1) Input a 4.43MHz PAL rainbow color-bar(300mV(p-p),
burst:chroma=1:1) with sync into Pin61. .
(2) Supply Pin15 1.5V and measure the amplitude of Pin14
output, that is VPBHTC.
(3) Calculate; (VPBOUT:see C7)
"GHTC"=20*log(VPBHTC/VPBOUT)
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