TPS389006Q1EVM: Can TPS389006Q1EVM used for testing TPS388008001 ? How does TPS389006Q1EVM detect and recognize a supervisor reference?

Hi Henry,

Thanks for your answer.

In fact, I can write on the TPS388008001 but not in the monitoring channel 5, 6, 7 and 8 like the software shows the wrong reference. For the read, I don't know where I can see the reading of the register that I use on the software. Also, I had probleme with the adjustment of the scalling setting. I can choice the scalling x4 or x1 for OV threshold but I can't choise the scalling x4 for UV threshold.

Hi Henry,

I'm come back from hollidays. I have this window that appears like you:

At beginnig, I set the commands on this pages just for scalling, monitoring channel and threshold:

After, I seen an other window in which I can set each register with byte code. Like I noticed the name and the address of the registers on the software device is different that the name  and the address of the registers on component's datasheet, I did a code in MicroPython where I selected BANK 0 at beginning to write on the registers PROT 1, PROT 2 and PROT MON to allow changes.

After, I selected BANK 1 to make the changes I wanted and I make changes on the registers Vmon_CTL, VMON_MISC, IEN_UVHF, IEN_OVHF, IEN_CONTROL, IEN_VENDOR, MON_CH_EN, VRANGE_MULT, UV_HF1, OV_HF1, FLT_HF1, AMSK_ON, AMSK_OFF, AMSK_EXS and AMSK_ENS.

Finally, I selected BANK 0 to do reading of the registers INT_SRC, INT_MONITOR, INT_CONTROL, INT_VENDOR, INT_UVHF and INT_OVHF.

I used the syntaxe "i2c.writeto(device_addr, command)" for the writtting sequences and the syntaxe "i2c.writeto(device_addr, register_addr) + i2c.readfrom(device_addr, nbr_byte)" for the reading sequences like you can see in this part of my code:

print('Création de la trame PROT2')

Reg_Addr_PROT2 = 0xF2 #Octet contenant l'adresse du registre (Valeur convertie en hexa)
dataPROT2_WR = 0x00 #Octet contenant la commande que l'on veut passer (Valeur convertie en hexa. 0x00: Changes are possibles. Ici, on souhaite activer la modification par écriture sur chaque registre de BANK1 afin de pouvoir changer des paramètres/commandes)
tramePROT2 = bytearray([Reg_Addr_PROT2, dataPROT2_WR]) #Création de la trame PROT2
print(tramePROT2)

i2c.writeto(adr0, tramePROT2) #Envoi de la tramePROT1 à l'adresse de l'esclave

i2c.writeto(adr0, bytes([Reg_Addr_PROT2])) # Sélection du registre à lire
dataPROT2_R =i2c.readfrom(adr0, 1)
print("Données lues : ",dataPROT2_R) 

utime.sleep(Tempo) #Temporisation afin de laisser le TPS38800 prendre en compte la commande précédante
print("\n--------------------------------------------------------------------------------------")

Hi Henry,

Thanks for your help. I noticed that the write operations are better with this method like the read operation and, this time, I can see every command that is being read. There is one last problem. During my last test, I saw that there is a fault of state or communication detected on the INT_SRC register. I want to know where the problem might come from?

Hi Issa,

To clarify, are you able to read the contents of the register properly or is there an error when trying to read from only this register? If you cannot read from the register using TI Fusion Digital Power Designer, please send a screenshot of the error you are encountering.

The INT_SRC register stores information about the source of a global interrupt, and is described fully in section 7.5.1.1.1 of the datasheet.

-Henry

In fact, I can read in this register but I set a voltage 0 V on channel 1 with an under-voltage threshold at 3.1 V. However, I do not read on the software a failure of the voltage monitor in the register INT_SRC because I have the data code 02h. I read this data code in this area:

Instead of the 0x00 you see on the current image, there was 0x02 which means that there are no voltage monitor defects but status or communication defects. This is this data code who surprise me.