CCS/IWR1443: IWR1443 es3.0 Can not get in flash mode

user6016280

Part Number: IWR1443
Other Parts Discussed in Thread: UNIFLASH,

Tool/software: Code Composer Studio

i have design my board as <design1 with ir1443 and msp432>,and now i can not get in the flash mode for Uniflash; i have connect SOP2 to 3.3V,SOP1 to 0V,SOP0 to 3.3v,but i check the Vot in iwr1443 pin P13,it was still get 0v,is it correct?i can connect to Cortex_R4_0 in CCS. any thing i need to do?thanks.

over 5 years ago

0 Charles Oladimeji over 5 years ago

TI__Mastermind 33805 points

Hi,

From the schematic you shared the R75, R76 and R77 shows DNI, meaning those resistors are not placed on the board by default. Did you mount the resistors yourself? can you confirm if its properly soldered?

you will need to perform some trouble shooting on the board to figure out why the voltage level is not right.

BR,

Charles O

0 user6016280 over 5 years ago in reply to Charles Oladimeji

Prodigy 140 points

yes ，i have do some work to perform some trouble shooting on the board.i just want to know when i put sop2 on 3.3V,should IWR1443 pin P13 to be 3V?when i have not power on the board,i check the resistor between P13 and GND is 23KΩ,but after power on ,it become 26Ω.i need you help,thanks.

0 Charles Oladimeji over 5 years ago in reply to user6016280

TI__Mastermind 33805 points

Hi,

Using an oscilloscope you need to confirm that the SOP line voltage is settled at 3.3V before the nreset voltage goes above 1.5V. There are cases where the SOP line latches to the wrong value because the RC timing causes the device to go out of reset state while the SOP line is still in transient.

Resolving this on the other post

https://e2e.ti.com/support/tools/ccs/f/81/t/868969#pi320995=2

BR,

Charles O

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CCS/IWR1443: IWR1443 es3.0 Can not get in flash mode