SNLU269 april   2023 SN75LVPE3410

 

  1.   Abstract
  2. 1Access Method
    1. 1.1 Register Programming Through SMBus
  3. 2Register Types
    1. 2.1 Channel Control Share Registers
  4. 3Example Programming Sequences
    1. 3.1 Single Channel Write Selection
    2. 3.2 Broadcast Write Selection
    3. 3.3 Set CTLE Gain Level
    4. 3.4 Set CTLE DC Gain Level
    5. 3.5 Set VOD Level
  5. 4Share Registers
  6. 5Channel Registers
  7. 6References

3.2 Broadcast Write Selection

Register 0xFF[1] is used to perform broadcast register writes to all channels. Users can perform single-channel read-modify-broadcast-write commands by setting register 0xFF to 0x03 and selecting a single channel in the 0xFC register. All reads will be from the channel selected in register 0xFC. If more than one channel is selected in register 0xFC, then reads are invalid.

Table 3-2 shows how to configure the device to read back values from Channel 0 and then broadcast write to all channels. TI highly recommends to select only one channel for read back when simultaneously enabling broadcast writes.

Table 3-2 Sequence to Implement a Broadcast Write
StepRegister SetOperationRegister Address
[HEX]		Register Value
[HEX]		Write Mask
[HEX]		Comment
1ShareWrite0xFF0x030xFFEnable Channel Register Page access and broadcast mode.
2ShareWrite0xFC0x010xFFSelect only register set channel 0 for read back.