DS90UB941AS-Q1: Some question on Pin function of 941

hi brandon,

pls check below comments:

1.Both 948 and 941 have I2C, SPI, I2S, and gpio function pins. Can these functions be communicated at the same time? And it's all transparent, right?

TI: Yes, they can work together, but pls note due to pinout limitation, some pins are reused! for example, some GPIOs are reused as I2S, when I2S is enabled, these reused pins can't be used as GPIO. for details, you can refer to d/s descriptions.

2.For 948, can I use pin11-14 as I2S and pin9-10 as gpio at the same time? 941 can also be used in this way, right?

TI: you need follow up the d/s pin out  description for design. regarding 948 and 941, the controlling pins are mapped.

3.Is there a one-to-one correspondence between 941 and 948 gpio? For example, gpio2 (pin10) of 948 corresponds to gpio2 (pin38) of 941;

TI: Yes.

4.What is the difference between gpio_reg and gpio?

TI: gpio_reg is based on register control, gpio can support local and remote. you can check the d/s on GPIO description section.

regarsd,

Steven