Need BQ769x0 Register Reference Manual

My customer is looking for the reference manual for the bq769x0 devices. They are planning to use their own microcontroller to drive it (option shown on the bq769x0 datasheet), but need to have the details for the registers and command/responses. Checked the web site, and it only has the datasheets and an example MSP430 I2C communication with CRC app note. Note: They are looking at the BQ76920 and BQ76930 devices.