DP83867CS datasheet(27/114 Pages) TI1

27 / 114 page

DP83867CS, DP83867IS, DP83867E

www.ti.com

SNLS504 – OCTOBER 2015

9.4.2.4 Write (No Post Increment) Operation

To write a register in the extended register set:

1. Write the value 0x001F (address function field = 00, DEVAD = 31) to register REGCR.

2. Write the desired register address to register ADDAR.

3. Write the value 0x401F (data, no post increment function field = 01, DEVAD = 31) to register REGCR.

4. Write the content of the desired extended register set register to register ADDAR.

Subsequent writes to register ADDAR (step 4) continue to rewrite the register selected by the value in the

address register.

Note: steps (1) and (2) can be skipped if the address register was previously configured.

9.4.2.5 Read (No Post Increment) Operation

To read a register in the extended register set:

1. Write the value 0x001F (address function field = 00, DEVAD = 31) to register REGCR.

2. Write the desired register address to register ADDAR.

3. Write the value 0x401F (data, no post increment function field = 01, DEVAD = 31) to register REGCR.

4. Read the content of the desired extended register set register to register ADDAR.

Subsequent reads from register ADDAR (step 4) continue reading the register selected by the value in the

address register.

Note: steps (1) and (2) can be skipped if the address register was previously configured.

9.4.2.6 Write (Post Increment) Operation

1. Write the value 0x001F (address function field = 00, DEVAD = 31) to register REGCR.

2. Write the register address from register ADDAR.

3. Write the value 0x801F (data, post increment on reads and writes function field = 10, DEVAD = 31) or the

value 0xC01F (data, post increment on writes function field = 11. DEVAD = 31) to register REGCR.

4. Write the content of the desired extended register set register to register ADDAR.

Subsequent writes to register ADDAR (step 4) write the next higher addressed data register selected by the

value of the address register; the address register is incremented after each access.

9.4.2.7 Read (Post Increment) Operation

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 0x001F (address function field = 00, DEVAD = 31) to register REGCR.

2. Write the desired register address to register ADDAR.

3. Write the value 0x801F (data, post increment on reads and writes function field = 10, DEVAD = 31) to

4. Read the content of the desired extended register set register to register ADDAR.

Subsequent reads to register ADDAR (step 4) read the next higher addressed data register selected by the value

DP83867CS Datasheet(PDF) 27 Page - Texas Instruments