57
edits
Changes
moved description of JTAG/UART connector to Hacking section
Teardown of the Canon PowerShot G9 point-and-shoot camera.
12.1 MP CMOS , 1/1.7" CCD image sensor with 6x IS optical zoom. Released in Oct 2007, PCB date code 29th week of 2007[[File:Canon-powershot-g9.jpg|none|thumb|Canon PowerShot G9|alt=]]A service manual with assembly diagram, but no schematic, can be found [https://elektrotanya.com/canon_powershot_g9.pdf/download.html on the internet]. Technical details, including firmware dumps, on the [https://chdk.fandom.com/wiki/G9 CHDK Wiki].
==Teardown Pictures==
CN1002 flat flex to jog dial unit, TOP_M FPC
CN1004 USB/digital
Q582 ROHM '''2SK2715''' 10V drive N-Ch MOSFET
[[File:Canon PowerShot G9 debug header.jpg|thumb|Unpopulated connector CN1003, probably for JTAG and UART]]
== Hacking ==
Unpopulated connector CN1003 located on back of main board
* Candidate for JTAG and/or UART* Located near to SD card holder* Multiple pads connected to test points* Pin-out likely same as documented [https://web.archive.org/web/20200302085303/https://nada-labs.net/2014/finding-jtag-on-a-canon-elph100hs-ixus115/ here].<syntaxhighlight lang="c"> TX - _ RX GND - _ 3.3V SHDN - _ N/C N/C - _ HALF_BAUD PD - _ ALT_BOOT PD - _ /TRST TDI - _ TMS TCK - _ TDO /OFF -<br /syntaxhighlight>