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The pullups are needed even when the IIC interface is not used.
Note that this click-through licensing based support forum was developed as a tool for module based implementations of the BCM20732(S). Chip-level implementations of the BC20732 require an NDA and engagement at a local level with your Broadcom Distribution and Manufactures Representatives.
Apparently, the I2C spec requires a pull up on SCL and SDA.
To summarize this discussion.
Related to I2C and SCL/SDA, external pull-ups are required on SOC, module has them built-in (10K)