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Topic: Need help with identifying boot_sel pins of Infineon PSB 50712 SoC

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Hello,

I have PSB 50712 SoC and I need your help to identify the pins which control the boot source of the SoC. Similar work has been documented here http://wiki.openwrt.org/toh/arcadyan/arv752dpw#uart. But I have no clue how the author (lutz.willek) has identified the pins. Can anyone give me instructions how to do it?
The large scale problem is to rewrite the bootloader residing in flash memory thru the hw UART interface of the SoC.
Datasheets for the Lantiq/Infineon SoCs are not publicly available.

Many thanks,
hph

http://i.imgur.com/w9GrOWz.jpg?1

(Last edited by hph_ on 5 Mar 2013, 00:44)

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