The number of data bytes to transmit. Zero is valid and will result in a read-only I2C operation.

• Data type: UINT16  (type index = 0)
• Readable and writable
• Default value: 0

Data that will be written to the I2C bus. This register is a buffer.

• Data type: BYTE  (type index = 99)
• Write-only
• Default value: 0
• This register is a Buffer Register