如何用SAA7220给SAA7310GP加数字输出？？？？

tube

请上个图！！谢谢！！！

阿卢

我制作过,改天发个图给你,现在上班没带过来.

朽木也是木

bbf_814@tom.com

wy5829

以下是引用阿卢在2005-7-5 15:03:00的发言：
我用7310加7220就有同轴输出了,不用动原线路,在7310的1至4脚引出线接上7220的相应脚就行了,并将7310的26脚接7220的晶振输入脚就行了<img src="attachments/dvbbs/2005-7/20057515313747.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2005-7/20057515313747.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />

蜗牛007

以下是引用阿卢在2005-7-5 14:50:00的发言：

我的EMAIL：WALLACETAN@163.COM

谢谢。

阿卢

我用7310加7220就有同轴输出了,不用动原线路,在7310的1至4脚引出线接上7220的相应脚就行了,并将7310的26脚接7220的晶振输入脚就行了<img src="attachments/dvbbs/2005-7/20057515313747.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2005-7/20057515313747.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />

阿卢

<img src="attachments/dvbbs/2005-7/200575145817170.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2005-7/200575145817170.jpg\');}" onmousewheel="return imgzoom(this);" alt="" /><img src="attachments/dvbbs/2005-7/200575145829434.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2005-7/200575145829434.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />

阿卢

zhong2008

逛逛

资料很不清楚，有点遗憾。

碰碰车

不好意思，现在我才看到，我也没有弄过。你还是问鬼版好一点。pdf地址在这里http://www.alldatasheet.com/datasheet-pdf/view/PHILIPS/SAA7220.html
看能不能帮到你了。呵呵

zhong2008

谢谢,不过打不开!

华仔

http://www.tiking.com/compment.asp?compment=PHILIPS\SAA7220.pdf55555555SAA

小鬼头

先粗调聚焦线圈在零位（目测），然后调节时测另外一个地方的电压，调 至规定值。。。具体忘了。如果你找到老的菲利浦CD机的维修手册应该有讲。  另外一个，我曾试过，但也忘了。[em11]

zhong2008

聚集线圈怎样调?是不是应有个测试点?调节光功率应有作用,正常RF网波是1.2V左右!因手头没有资料,不敢乱调,光功率电阻顺时针方向调是不是光功率变大?

小鬼头

一个调聚焦线圈的偏置（零位），一个调光头功率。。。。但IC内有已有光头功率自动控制的功能，可能调节范围比较小。。。。不知道调节他的效果是不是象CDM12。1那些光头那样不直观。

我知道的就这些

zhong2008

你可不可以给我一个TDA5708,SAA7210,SAA7220的整个电路图,我想把CD机重新调一下,但找不到RF信号调整点!

tube

碰碰车

可以参考7220的pdf啊。
文件太大我传不上来啊，我截图给你看吧<img src="attachments/dvbbs/2005-7/200572153726749.jpg" border="0" onload="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onmouseover="if(this.width>screen.width*0.7) {this.resized=true; this.width=screen.width*0.7; this.style.cursor=\'hand\'; this.alt=\'Click here to open new window\nCTRL+Mouse wheel to zoom in/out\';}" onclick="if(!this.resized) {return true;} else {window.open(\'attachments/dvbbs/2005-7/200572153726749.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />

小鬼头

证实SAA7310可以和SAA7220相接。但没有直接的相接图。

我觉得里面的关键是之间接好四条线，一是系统时钟线（需将SAA7310的晶体振荡电路取消，改为使用SAA7220的，并将信号送到7310），二至四是I2S的三条线，五是EF误差信号。后面的4条线均是从7310送至7220。