30 Apr
2013
30 Apr
'13
12:52 p.m.
At 01:55 PM 4/29/2013, Kevin McQuiggin wrote:
It sounds like it could well be the Philips/LMS interface. The service
manual for a PHilips CD-ROM drive that I mentioned says that the
connecotr pinout is :
1 : Responce +
2 : Command +
3 : Data +
4 : Clock +
5 : Attention +
6 : N/C
7 : N/C
8 : Ground
9 : Response -
10 : Command -
11 : Data -
12 : Clock -
13 : Attention -
14 : N/C
15 : N/C
The cable si 'twisted in pairs, pin to pin with the exception of pins 6,
7, 14 and 15'.
Since there are actually an odd number of conenctions (due to the ground
on pin 8), that comment makes not total sense, but I think it's clear
what is meant.
Of the 5 signals, command is from controlelr to drieve, all others are
If all else fails, I can take a voltmeter to my
cable and make you a
pinout table. Let me know.
Hopefully it won't come to that. However, a simple test might
suffice. The first twisted pair connects to pins 1 and 9 on the DA15F
cab kit connector. (The other pairs are 2/10, 3/11, 4/12, and 5/13.) from drive to controller. Clock and data are extracted
fro mteh CD-ROM
data stream, command, respsone and attention end up on the drive
microcontroller.
-tony