TPS65982BB: config pin(address H6) function

user6275587

Part Number: TPS65982BB
Other Parts Discussed in Thread: TPS65988

TPS65982BB's config input pin function's description is only " Boot configration pin. tie directly to ground." but apprication circuit conect to 1.65V for SPI boot and Tapex creek Ti88 circuit conect to 3V for I2C boot. this pin is analog input. please show me the voltage vs boot select function. what happen with connect to ground? we want to know how to use this pin at Tapex creek Ti88 circuit. 3.0V? 1.65V? Ground?

over 4 years ago

0 Jacob Ontiveros over 4 years ago

TI__Expert 6280 points

Hi,

This pin is used for debugging purposes, for checking certain boot behaviors. If you are designing with Tapex Creek, please follow the reference design.

Jacob

0 user6275587 over 4 years ago in reply to Jacob Ontiveros

Prodigy 50 points

Thank you Jacob-san.

We find a difference of address of config pin.

Tapex Creek Ti88 is

config pin is address H8

NC_H6 is address H6

but latest 65982BB data sheet (SLVSER3A –NOVEMBER 2018–REVISED APRIL 2020) is

config pin is address H6

GND pin is address H8

we make board same as Tapex Creek Ti88 circuit diagram but not work with BB mode.

without BB setting work fine.

wi think the reason is config pin is no connection then cannot boot then system wait 65982BB wake-up.

is this right?

please help us.

kenji

0 Jacob Ontiveros over 4 years ago in reply to user6275587

TI__Expert 6280 points

Hi Kenji,

Can you please show the schematic connection between the 988 and 982BB?

The config pin setting will only take into affect if the 982BB fails to detect a SPI flash or it does not get booted by the 988 withing a specific time. The 982BB will be boot into a safe state if above if failed.

What do you mean by "Without BB setting works fine?"

Jacob

0 user6280070 over 4 years ago in reply to Jacob Ontiveros

Prodigy 130 points

The connection between the 988 and 982BB is same as "Tapex Creek Ti88".

We created two TPS65988 FW by application customise tool.

[Using TPS65982BB]

Click Project -> New Project
Which referece design are you use ? -> "Tapex Creek"
Are you using default Tapex Creek desing? -> Select "No"
Are you using TPS65982BB as an external billboard? -> "Yes"
...

[Not using TPS65982BB]

Click Project -> New Project
Which referece design are you use ? -> "Tapex Creek"
Are you using default Tapex Creek desing? -> Select "No"
Are you using TPS65982BB as an external billboard? -> "No"
...

TPS65988 boots when [Not using TPS65982BB] is installed.

But it does not boot when [Using TPS65982BB] FW is installed

and we checked the "GPIO #18" after power on, it keeps low.

Kyohei Koyabu

0 Jacob Ontiveros over 4 years ago in reply to user6280070

TI__Expert 6280 points

Can you please attach the binaries you generated? I do not see any issue on my reference board.

0 user6280070 over 4 years ago in reply to Jacob Ontiveros

Prodigy 130 points

I uploaded two firmware files.

1. the firmware for TPS65988 + TPS65982BB

TPS65988_TP_REF_src_ufp_swap_off.zip

2 the firmware for TPS65988 only

TPS65988_TP_NB_SC_NC_V_src_ufp_swap_off.zip

0 Jacob Ontiveros over 4 years ago in reply to user6280070

TI__Expert 6280 points

Did you merge the binaries with imaginarium and tested also? Could you tell me the NVM version you are suing for Titan Ridge?

0 user6280070 over 4 years ago in reply to Jacob Ontiveros

Prodigy 130 points

Yes, I merged with NVM version 59.

The imaginarium setting of both binary for TPS65988 is same. (the most of setting is default value.)

0 Jacob Ontiveros over 4 years ago in reply to user6280070

TI__Expert 6280 points

Hi,

I did find an issue with the template that does not have the 982BB. I don't know if this is the same thing that you are seeing based on your description of the issue you are seeing. I have attached both the project files and low region binaries used to merge with the TBT NVM. On the project file that does not have the 982BB, note that the GPIO_0 has an initial value of 1.

tapex_creek_binary_projects.zip

Jacob

0 user6280070 over 4 years ago in reply to Jacob Ontiveros

Prodigy 130 points

Thank you for project files.

I merged "with 982BB" to NVM by imaginarium, but it does not work.

("without 982BB" works good)

By the way, we mounted one flash for TR/988/982BB on our board. is it ok?

(We checked the Ti88 reference design that does not mount flash for 982BB. it said that the 982BB fw is downloaded from 988 via I2C)

I've never seen a Ti88 board, because I could not find the dealer. ( I asked intel, they didn't have Ti88 board)

Do you know how could I get or borrow a Ti88 board ?

I would like to check it.

0 user6280070 over 4 years ago in reply to Jacob Ontiveros

Prodigy 130 points

We checked the I2C data between TPS65988 and TPS65982BB.

We found that the FW for TPS65982BB is not wrote to TPS65982BB. (We checked that the FW for TPS65988 includes the FW for TPS65982BB.)

The "BDCc" command is wrote to TPS65982BB, so we think the i2c connection is working but the FW is not DL.

When the 82BB FW is wrote to TPS65982BB? while the TPS65988 reads the fw data from SPI flash or the timing at the TPS65988 clear the HRESET of TPS65982BB?

0 Jacob Ontiveros over 4 years ago in reply to user6280070

TI__Expert 6280 points

Hi,

If the designed was followed there should not be an issue with the connections or hardware. Could you please probe the I2C between the 988 and 982BB like the attached log? I was able to use the default template to create my binary and then merged it with the TBT NVM. Could you provide your project file?

tapex_988_982bb_boot.logicdata

0 user6280070 over 4 years ago in reply to Jacob Ontiveros

Prodigy 130 points

Hi,

I uploaded the project file and binary file.

I will probe the i2c connection and upload it.

TPS65988_TP_REF_base.zip

0 user6280070 over 4 years ago in reply to Jacob Ontiveros

Prodigy 130 points

Sorry I could not open the logicdata file.

I checked the I2C connection. No signal occurred until USB connector is plugged.

After plugged, 988 write slave (address 0x38)

REG number 0x09 : 0xF3 , 0x0E (2Byte)

and then

REG number 0x08 : 0x42 , 0x44 , 0x43 , 0x63 (4Byte).

I think this is BDCc command.

Does 988 skip to write the program to 982BB ?.

By the way , the Application Customization Tool I use is version 5.24. Is it the latest application for 988 ?

I2C decode.xlsx

Reduce the likelihood of ignitions

0 Jacob Ontiveros over 4 years ago in reply to user6280070

TI__Expert 6280 points

Hi,

Correct please use 5.24 for Tapex Creek.

I used you project file and regenerated the binary. Using this binary I merged it into the TR NVM and loaded it onto my Tapex Creek board.

I verified that the PD controller and 982BB both booted successfully.
I verified that I get a TBT link and the USB2 flash drive enumerated.
I also verified that the billboard function works

There has to be a connection for the control signals or I2C communication to take place to configure the 982BB. Could you please verify that your hardware matches the Tapex Creek design?

Jacob

0 user6280070 over 4 years ago in reply to Jacob Ontiveros

Prodigy 130 points

Hi,

Would you share your mailing list for sending e-mail ?

I'd like to ask questions with my confidential information.

Thanks

0 Jacob Ontiveros over 4 years ago in reply to user6280070

TI__Expert 6280 points

Hi,

I sync'd with Shidara-san,

We will be able to review when the schematic check is submitted. I will keep you posted.

Jacob

0 user6280070 over 4 years ago in reply to Jacob Ontiveros

Prodigy 130 points

Hi,

Thank you for your support.

How could I submit the schematic that contain confidential information?

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TPS65982BB: config pin(address H6) function