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Changes for page Front I/O

Last modified by Kevin Wiki on 2024/07/07 22:48
From version 4.1
edited by Kevin Wiki
on 2024/07/04 23:07
Change comment: There is no comment for this version
To version 6.1
edited by Kevin Wiki
on 2024/07/05 09:25
Change comment: Deleted image "xserve io main cable pinout.drawio.png"

Summary

Details

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6 6  
7 7  There is a single cable that controls four parts, each half side of I/O LED and center column of blue LEDs.
8 8  
9 -[[image:xserve io main cable pinout.drawio.png]]
9 +[[image:xserve io main cable and PCB pinout.drawio.png||alt="xserve io main cable pinout.drawio.png"]]
10 10  
11 11  (% class="wikigeneratedid" %)
12 12  [[attach:xserve io main cable pinout.drawio.svg||target="_blank"]]
13 13  
14 +
15 +(% class="wikigeneratedid" %)
16 +This cable allows us to communicate with 4 chips using two data lines, audio & service switch, case switch and (yet to be documented) compute LEDs
17 +
14 14  = How we got here =
15 15  
16 16  Measure out the ground and power signals by comparing with other chips on board. E.g. we find [SAA1064T] datasheet, locate the GND (Vee) and 5V (Vcc) and measure connectivity (0 ohm resistance) between chip pins and cable pins. This gives us pins GND 2 & 8 and PWR 16 & 22.
xserve io main cable pinout.drawio.png
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1 -XWiki.kevin
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xserve io main cable and PCB pinout.drawio.png
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1 +XWiki.kevin
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