This example demonstrates a write operation with no post increment. In this example, the MAC impedance is adjusted to 99.25 Ω using the IO MUX GPIO Control Register (IOCTRL, address 0x0461).

1. Write the value 0x001F to register 0x000D.
2. Write the value 0x0461 to register 0x000E (sets desired register to the IOCTRL).
3. Write the value 0x401F to register 0x000D.
4. Write the value 0x0400 to register 0x000E (sets MAC impedance to 99.25 Ω).