NEC6x光驱开始打磨了

Saxophone

<img src="attachments/dvbbs/2005-5/2005525173116973.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/2005-5/2005525173116973.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />

Saxophone

<img src="attachments/dvbbs/2005-5/2005525173047508.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/2005-5/2005525173047508.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />

Saxophone

找到CXD2510Q的60脚，发现有通到反面，于是直接接到反面的焊点上了。绿色是SPDIF，黄色是VCC，黑色是GND。
<img src="attachments/dvbbs/2005-5/200552517304623.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/2005-5/200552517304623.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />

Saxophone

为试验做的炮灰
<img src="attachments/dvbbs/2005-5/2005525172724302.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/2005-5/2005525172724302.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />

csszss

期盼......

bulejeans

其实就nec的光驱来说,所用的dsp cxd2510既可以用16.9344m的也可以用38.8688m的,有个io口通过上拉还是下拉来决定这个频率的. relock的目的是减少jetter,和所用晶振频率没有什么关系的

visualwang

<img src="attachments/dvbbs/2005-5/200553018654931.gif" 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/2005-5/200553018654931.gif\');}" onmousewheel="return imgzoom(this);" alt="" />
不知道你用的是不是这个。
另外，对D触发器的功能还不是很明白，33.8688或者16。9344都可以作为时钟去同步SPDIF信号么？SPDIF的频率不在这个频点上啊。

Saxophone

DSP并没有对时钟信号作处理，出的那个就应该是进的那个，我想这兄弟你应该能明白。但SPDIF则是由DSP产生的信号，兄弟你也应该能明白吧。再下面的事情就不用说了。[em11]

visualwang

看到一个电路图，虽然没有很明白，但它需要的两个输入一个是时钟，一个是SPDIF。
时钟是DSP出来的16.9344，SPDIF是DSP出来的输出信号，然后就是Reclock。
既然都是从DSP出来的，那不就没有Reclock的意义了么。
下面是我看到的这个图，不知道对不对：
<img src="attachments/dvbbs/2005-5/200553017356532.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/2005-5/200553017356532.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />

Saxophone

To visualwang兄：时钟信号是准了，但DSP在处理各种信号时就很难避免受到干扰，所以SPDIF的输出也就或多或少地有所变形，Re-Clock实质就是用原来晶振信号作为基准对SPDIF信号作整形而已。

To bulejeans 兄：多少米一个？[em11]

visualwang

不是很明白，如果晶振已经换成高精度的，那么2510输出的SPDIF就是以此晶振为基础的数字信号。
把这个SPDIF信号和晶振的输出频率再进行reclock有什么意义？反正都是一个晶振。

不过Saxophone 是很强啊，手挺快的，这个贴一定要顶起来。

bulejeans

..

Saxophone

兄弟想开就就没有事，或许还可以救活呢。

吻子

[em12][em12][em10][em10]

把一个光头挂了!


[em10][em10][em10]

吻子

一股新势力在瘦狗岭升起.他将获得胜利!

与龙洞,魔君,组成强大的新双塔同盟!!!!![em11][em11][em09][em09]

Saxophone

NEC6x光驱的打磨试验到今天可以说是完成了。结果有点出乎我我意料。上面的炮灰是一7只74F74和一只HD74HC04组成的，1/2只74F74组成二分频电路，另外的1/2只74F74为RE-Clock电路。把74HC00和100欧的电阻断开后，把二分频的输出接上，结果很奇怪，入盘后显示为Error，却可以放CD，声音的速度却变慢了。至于把16.9的晶振直接接上53脚可否我就不知道了，因为我没有16.9的晶振，我也不会去败一个回来了，呵呵。[em11]
我把二分频电路拆了，把74HC00到100欧的电阻接回，又把50.8MHZ的晶振到74HCU04的输出也断开了。结果却几乎一切正常，起码放CD时是一切都正常。于是接上SCSI线，电脑也可以正常把光驱认出，放入数据盘时却认不出盘了。呵呵，原来33.8的晶振是DSP的时钟信号，50.8是SCSI数据控制信号。[em12]
对于只是把NEC6x作为CD转盘的兄弟不妨把50.8拆了，换上33.8的晶振到74HC04的第九脚就即可，我则是把74HC04也拆了，换成了从钳版那团购回来的74VHC04了。[em11]
本来还想试试Re-Clock输出信号的，却一不小心把74F74灭了[em11]。不过也不要紧了，不Re-Clock或者更好，阿拉对洞洞没什么信心。[em11]
过了周二我就重新把这块板子在以前血的教训上重新打磨一次，想看最终版的兄弟们就把这帖帖子顶起来，另让它沉吧。[em11][em11]

Saxophone

<img src="attachments/dvbbs/2005-5/2005529223029482.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/2005-5/2005529223029482.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />

Saxophone

<img src="attachments/dvbbs/2005-5/2005529222934816.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/2005-5/2005529222934816.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />

Saxophone

<img src="attachments/dvbbs/2005-5/2005529222612773.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/2005-5/2005529222612773.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />

哇哈哈～～[em11]

Saxophone

<img src="attachments/dvbbs/2005-5/200552922249989.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/2005-5/200552922249989.jpg\');}" onmousewheel="return imgzoom(this);" alt="" />

把坏了的驱动IC做了更换，可惜手工差了点。[em10]