參數(shù)資料
型號(hào): M61250BFP
廠商: Renesas Technology Corp.
英文描述: NTSC 1 chip TV signal processor
中文描述: 1 NTSC制式電視信號(hào)處理器芯片
文件頁數(shù): 36/50頁
文件大小: 759K
代理商: M61250BFP
M61250BFP
Rev.1.0, Sep.23.2003, page 36 of 49
FBY: Video frequency characteristic
1. Input SG.B (5 MHz, 0.4 Vp-p) to pin 38.
2. Measure the amplitude (p-p) other than the blanking part of the output of pins 14, 15, 16, take the result to
be YB.
3. FYB is defined as follows.
FYB = 20 log YB (Vp-p)
GY (Vp-p) (dB)
CRF1: Chroma trap attenuation 1 (normal R/G/B output)
TRF maximum chroma trap attenuation
1. Input SG.C to pin 38, measure the 3.58 MHz frequency level with TRAP ON/OFF (02H D4) DATA 1, take this to
be N
0
.
2. Also measure the level with TRAP ON/OFF (02H D4) DATA 0.
3. CRF1 is defined as follows.
CRF1 = 20 log Measured value (mVp-p)
N
0
(mVp-p) (dB)
4. Take the minimum value of CRF1 when the I
2
C BUS data of the TRAP fine ADJ (12H D0/D1) is adjusted to be
TRF.
YDL1: YDL time 1
1. Input SG.A to pin 38.
2. Measure the delay time relative to the input signal of pins 14, 15, 16.
The delay time at 50% rise level is measured.
YDL2, 3, 4: YDL time 2, 3, 4
1. Input SG.A to pin 38.
2. Measure the delay time of the input signal and the pin 14, 15, 16 output signals.
3. YDL2, YDL3, YDL4 are defined as follows.
YDL2 = measured value (ns) - YDL1 (measured value)
YDL3 = measured value (ns) - YDL2 (measured value)
YDL4 = measured value (ns) - YDL3 (measured value)
GTmax: Video tone control characteristic 2
1. Input SG.B (f = 2.5 MHz) to pin 38.
2. The output amplitude of pins 14, 15, 16 when the video tone data is at the center (20 H) is taken to be GTnor.
3. The output amplitude of pins 14, 15, 16 when the video tone data is maximum is measured.
4. GTmax is defined as follows.
GTmax = 20 log Measured value (Vp-p)
GTnor (mVp-p) (dB)
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