BQ34Z100-R2: Cannot Locate Registers for "Fast Resistance Scaling" Feature Described in TRM

Dear TI Support Team,

I am working with the BQ34Z100-R2 fuel gauge and have been studying the Technical Reference Manual (SLUUC05A, Revised August 2023) to implement the "Fast Resistance Scaling" feature described in Section 3.11.

The feature is explained in detail, and I understand its purpose to improve RSOC convergence at low temperatures and high discharge rates. However, I am unable to locate the critical registers needed to control and monitor this function within the Data Flash Summary (Table 7-1).

Specifically, I cannot find the following two items mentioned in the TRM:

1. The Enable Bit (RSOC_CONV or similar):

   • Section 3.11.1 states: *"When enabled with IT Gauging Configuration[RSOC_CONV] = 1, fast resistance scaling becomes active..."*

   • I have thoroughly searched Table 7-1 and the Gas Gauging -> IT Cfg subclass but cannot find a register or bit named RSOC_CONV or any obvious enable control for this feature.

2. The Status Register (Cell 1 RaScale):

   • Section 3.11.1 and 3.11.2 refer to the Cell 1 RaScale register, which holds the calculated resistance scale factor.

   • This register is also absent from Table 7-1.

The dependent configuration parameters for this feature (Term Voltage Delta, Fast Scale Start SOC, etc.) are present in the table and accessible. However, without the ability to enable the feature or read its status, I cannot verify its operation or integrate it into our system.

My questions are:

1. What is the exact data flash location (Subclass ID and Offset) or command for the Fast Resistance Scaling enable control (RSOC_CONV)?

2. What is the exact data flash location or command to read the Cell 1 RaScale status value?

3. Is it possible that this feature is controlled by a bit within an existing multi-bit configuration register that is not explicitly named in the summary table? If so, which register and which bit?

4. Could this be a discrepancy between the TRM documentation and the current firmware version?

Any guidance or clarification you can provide would be immensely helpful. Thank you for your time and support.

Best regards,