Problem in Powering up cc2541Custom Board

This is the wiring diagram i followed

also i am using the Pin 9 of the cc-debugger to power up the board. So pin no 2(Target Voltage Sense) of the cc-debugger is also connected to the pin 9.

Although the LEd of the cc-debugger is always red even after hitting reset but when i measure the Voltage on different I/O pins i get 3.3 ~ 3.6 volts on some of the pins.
is this normal?

Remove the reset circuitry. Short the resistor and remove the cap.

Double check continuity from the metal on the CCdebugger to the pins on the chip.

Is the 1uF decoupling cap there?

Is the 5.6K Rbias there?

Is the thermal pad connected to ground?

Schematics and PCB screenshots pls.

Remove the reset circuitry. Short the resistor and remove the cap. (No effect)

Is the 1uF decoupling cap there? ( yes 1 uF on Pin 40)

Is the 5.6K Rbias there? (Yes but i have doubt in its mounting let me re-check)

Is the thermal pad connected to ground?(Yes)

Ok the 5.6k Rbias is connected .

Can you tell me which of the components are a minimum for just powering up the cc2541

Hello Peder
thanks for the reply

yes the decouple Cap is there along with the the decoupling caps on the VDD in the schematics i uploaded.but the 32Mhz or 32 Khz Crystal is not there .

correct me if i am wrong but i read somewhere there is an internal oscillator  in cc2541.if yes isn't that enough just to boot the chip.

thanks

Zubair

The external oscillators shouldn't be needed for the CC debugger to recognized the chip. I don't see that fact writing down in any TI documents so I'm not 100% sure.

When the chip boots, it uses the internal oscillators by default.

Hello Peder

Sorry for the late reply
but i am glad according to your suggestion the addition of 32 MHz XTAL solved the problem