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)： 57/95頁
文件大?。?/td> 898K
代理商： GS4901BCNE3
GS4901B/GS4900B Preliminary Data Sheet
37703 - 0
April 2006
57 of 95
3.8 Video Timing Generator
The internal PCLK signal generated by the clock synthesis circuit is used to
produce horizontal, vertical, and frame based timing output signals.
The signals generated and available to the application layer via the TIMING_OUT
pins are: H Sync, H Blanking, V Sync, V Blanking, F Sync, F Digital, DE, 10FID,
AFS (GS4901B only), and USER_1~4. These signals are defined in
Section 1.5 on
page 24
. Additional information pertaining to the 10FID, AFS, and USER_1~4
signals can be found in the sub-sections below.
When the GS4901B/GS4900B is operating in Genlock mode, the H, V, and F
based output timing signals are synchronized to the H, V, and F reference signals
applied to the inputs by the application layer. The video timing outputs may be
offset from the input reference by programming the Genlock Offset registers
beginning at address 1Bh of the host interface (see
Section 3.2.1.1 on page 35
).
All TIMING_OUT signals have selectable polarity. The default polarities for each
signal are given in the descriptions in
Section 1.5 on page 24
.
3.8.1 10 Field ID Pulse
As described in
Table 1-3
, the 10 field ID (10FID) output signal is used in the
identification of film to video cadence. It is only generated for 29.97, 30, 59.94, and
60fps formats.
The 10FID pulse is generated on every 5
th
frame for 29.97 and 30fps formats, and
every 10
th
frame on 59.94 and 60fps formats.
By default, the 10FID signal is set HIGH on the leading edge of the H Sync output
for the duration of line 1 of field 1 at the start of the 10 field sequence. This is shown
in
Figure 3-6
.
Alternatively, by setting bit 4 of the Video_Control register at address 4Ch of the
host interface, the 10FID output signal may be configured to go HIGH (default
polarity) on the leading edge of the H Sync pulse of line 1 of the first field in the 10
field sequence, and be reset LOW on the leading edge of the H Sync pulse of line
1 of the second field in the 10 field sequence. This is shown in
Figure 3-7
.
Figure 3-6: Default 10FID Output Timing
10FID Output
Horizontal Sync Output
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
相關(guān)PDF資料
PDF描述
GS4910B HD/SD/Graphics Clock and Timing Generator with GENLOCK
GS4910BCNE3 HD/SD/Graphics Clock and Timing Generator with GENLOCK
GS4911B HD/SD/Graphics Clock and Timing Generator with GENLOCK
GS4911BCNE3 HD/SD/Graphics Clock and Timing Generator with GENLOCK
GS4915 CONN,S/R,8 POS,254C-08-1, CLOSED END STRAIN RELIEF COVER
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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(biāo)準(zhǔn)包裝:1,500 系列:- 類型:時鐘緩沖器/驅(qū)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(yīng)商設(shè)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
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進(jìn)入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*