Re: SIMtrace prototype bug report

Hi,

On 17.06.2011 10:23, Harald Welte wrote:

However, I think there's one pretty serious problem in the hardware design: The bus switch has something like at least 5 (rather 16Ohms) of internal 'on' resistance between the sim card and the phone. While this _might_ still work for I/O, nRST and CLK lines, it definitely doesn't fly for the supply voltage (VCC).

how about using SN74CB3Q3244 or equivalent ? it has max 9 Omhs Ron.

Regards, Kevin