To read a register in the extended register set and automatically increment the address register to the next higher value following the write operation:

1. Write the value 0x1F (address function field = 00, DEVAD = '11111') to register REGCR.
2. Write the desired register address to register ADDAR.
3. Write the value 0x801F (data, post increment function field = 10, DEVAD = '11111') to register REGCR.
4. Read the content of the desired extended register set in register ADDAR.

Subsequent reads to register ADDAR (step 4) read the next higher addressed data register selected by the value of the address register; the address register is incremented after each access.