Part Number: PCM1865
Hi Team,
A customer is trying to access registers 40 and 117 on this device.
On datasheet, Register 40 has reserved bits, but the description says "Reserved. Do not access.", and register 117 is read only and reserved bits description is "Reserved. Always write 0b."
The customer would like to read and write on these registers for their application. Can you please help? Below is the complete customer inquiry:
"I'm trying to make the PCM1865 work. Datasheets lacks a lot of information about how to do things or has wrong information (like figure 50: write and read operation are the same).
Register 40 controls the PLL so i have to "access" it. I need to write to it and maybe read from it. But the question is not about register 40 particulary: registers 41, 42, 43, 51 to 54 (among others) algo have the same descriptio. Then there are same registers that say to write a specific value, like register 96......and then there are some like 97, 114, 115, 116 or 117 that say to write a value but the resister itself is read only, which makes no sense (or maybe the register is "R/W" but the "/W" got erased).
The next thing is that I got told to read a register like this:
* Send slave address from master with write bit
* slave should ACK
* Send register address to read to slave (0x12)
* Repeated/continued start
* Send slave address with read bit
* Slave should ACK
* Slave will then send back data
* I2C Stop
But how do I write to register 0x00 to change the page?"
Thank you.
Regards,
Marvin
