W90P710_05 Datasheet, PDF (470/526 Pages) Winbond – 16/32-bit ARM microcontroller

W90P710
BITS
[31:0]
DESCRIPTIONS
Data Transmit Register
The I²C core used 32-bit transmit buffer and provide multi-byte
transmit function. Set CSR[Tx_NUM] to a value that you want to
transmit. I²C core will always issue a transfer from the highest byte
first. For example, if CSR[Tx_NUM] = 0x3, Tx[31:24] will be
transmitted first, then Tx[23:16], and so on.
Tx
In case of a data transfer, all bits will be treated as data.
In case of a slave address transfer, the first 7 bits will be treated as 7-
bit address and the LSB represent the R/W bit. In this case,
LSB = 1, reading from slave
LSB = 0, writing to slave
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