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參數(shù)資料
| 型號： | GS4901BCNE3 |
| 廠商： | Gennum Corporation |
| 英文描述： | SD Clock and Timing Generator with GENLOCK |
| 中文描述： | 統(tǒng)計時鐘和定時發(fā)生器鎖相 |
| 文件頁數(shù)： | 41/95頁 |
| 文件大?。?/td> | 898K |
| 代理商： | GS4901BCNE3 |
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GS4901B/GS4900B Preliminary Data Sheet
37703 - 0
April 2006
41 of 95
3.4.2 10FID
The 10FID input is a reset pin, which can be used to reset the divider for the 10FID
output signal. In the GS4901B, the 10FID input pin will also reset the divider for the
AFS output signal. This default setting may be modified using the Audio_Control
register of the host interface (see
Section 3.10.3 on page 66
).
The GS4901B will reset the phase of the audio clocks to the leading edge of the H
Sync output on line 1 of every output frame in which the 10FID input is HIGH.
If the input reference format does not include a 10 Field ID signal, the external
10FID input pin should be held LOW.
The timing of the 10FID input signal is shown in
Figure 3-5
.
Figure 3-5: 10FID Input Timing
3.4.3 Automatic Polarity Recognition
To accommodate any standards that employ the polarity of the H and V sync
signals to indicate the format of the display, the GS4901B/GS4900B will recognize
H and V sync polarity and automatically synchronize to the leading edge.
The polarities of the HSYNC and VSYNC signals are reported in bits 3 and 4 of the
Video_Status register. Additionally, bit 2 of this register reports the detection of
either analog or digital input timing. See
Section 3.10.3 on page 66
for detailed
register descriptions.
10FID Input
Horizontal Sync Input
Total Line
Line 1, Frame 1 every 'n' frames
Line 1 every n frames where:
n = 5 @ 29.97 fps, 30 fps
n = 10 @ 59.94 fps, 60 fps
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| GS4910B | 制造商:GENNUM 制造商全稱:GENNUM 功能描述:HD/SD/Graphics Clock and Timing Generator with GENLOCK |
| GS4910BCNE3 | 功能描述:IC RE-TIMER RoHS:是 類別:集成電路 (IC) >> 時鐘/計時 - 專用 系列:- 標準包裝:1,500 系列:- 類型:時鐘緩沖器/驅動器 PLL:是 主要目的:- 輸入:- 輸出:- 電路數(shù):- 比率 - 輸入:輸出:- 差分 - 輸入:輸出:- 頻率 - 最大:- 電源電壓:3.3V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:28-SSOP（0.209"，5.30mm 寬） 供應商設備封裝:28-SSOP 包裝:帶卷 (TR) 其它名稱:93786AFT |
| GS4911ACNE3 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Gennum Corporation 功能描述: |
| GS4911B | 制造商:GENNUM 制造商全稱:GENNUM 功能描述:HD/SD/Graphics Clock and Timing Generator with GENLOCK |
| GS4911B_09 | 制造商:GENNUM 制造商全稱:GENNUM 功能描述:HD/SD/Graphics Clock and Timing Generator with GENLOCK |
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