[time-nuts] FE-5680A programming connector pinout
paulswedb at gmail.com
Thu Feb 2 04:17:11 UTC 2012
On Wed, Feb 1, 2012 at 8:50 PM, Elio Corbolante <eliocor at gmail.com> wrote:
> The 15 pin connector (near crystal oscillator) is used for JTAG programming
> the XC8572XL (XC) and the PSD813F1V (PSD).
> According to my analysis the pinout is the following:
> 1) Vcc/+5V - goes to pin 5 of MAX882 voltage regulator: its 3.3V output
> powers XC and PSD
> 2) Ground (GND)
> 3) PSD pin PC6 (JTAG-TDO)
> 4) PSD pin PC5 (JTAG-TDI)
> 5) PSD pin PC4 (JTAG-/TERR) [on datasheet erroneously shown connected to
> 6) PSD pin PC3 (JTAG-/TSTAT)
> 7) PSD pin PC1 (JTAG-TCK)
> 8) PSD pin PC0 (JTAG-TMS)
> 9) no known connection
> 10) no known connection
> 11) XC pin 30 (JTAG-TCK)
> 12) XC pin 28 (JTAG-TDI)
> 13) XC pin 53 (JTAG-TDO)
> 14) XC pin 29 (JTAG-TMS)
> 15) no known connection
> I think the +5V on pin 1 should be enough to program the two chips without
> requiring any power on the DB9 connector.
> My MQP Pin-Master 48 programmer SHOULD be able (via JTAG) to read the
> FLASH/EEPROM contents of the PSD813F1V: during the weekend I will try to
> dump the firmware of the FE-5680A.
> If the PSD chip is JTAG read protected I will have to desolder it and try
> to read its contents directly accessing Address/Data lines.
> at the following address you will find a (rather big) annotated picture
> regarding the connector pinout:
> _ Elio Corbolante.
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