I'm working with non-atmel board using at91sam7s128 , I tried the monitor program with board option : at91sam7s128 and noboard but neither of them works they are not responding ?!
My computer recognized the chip and I tried the board on both windows xp and linux :
In linux I have this when I put in terminal lsusb :
Bus 005 Device 008: ID 03eb:6124 Atmel Corp. at91sam SAMBA bootloader
and in windows I installed the driver and board is recognized in serial port category .
So if my computer recognize the chip and SAM-BA therefor do every thing must be ok ?
I also tried SAM_I_AM ,it successfully open a communication with my board using 'open command' but when I give a command like 'info usb' it gives me 'Error: SAM-BA not responding'
in my board I used some estimate value , in specific :
I used 31 ohm resistors instead of 27 ohm for DP-DM .
I used 12pf capacitors instead of 15pf for DP-DM .
I used 1.47k resistor in pll RC loop instead of 1.5k .which maybe sounds good as what the pll calculator says .
and I used 12pf load capacitors instead of 10pf load capacitors for 18.432MH crystal .
and this schematic shows all parts related to usb in my board :
is there any thing could help me to indicate the problem ? also I have some fears about FDN360P maybe it is slow in switching , but datasheet didn't said any things on how fast pulling up will be .