UPSD3354DV-40U6 Datasheet, PDF (140/272 Pages) STMicroelectronics – fast 8032 MCU with programmable logic

I²C interface
Does status.TX_MODE = 1?
If Yes, Master wants transmit mode
● Exit ISR, indicate Master wants Slv-Xmit mode
If No, Master wants Slave-Recv mode
● dummy = S1DAT, read to release bus
● Exit ISR, ready to recv data on next interrupt
C: (Interrupt is from Slv receiving data from Mastr)
● recv_buf[buffer_index] = S1DAT, read byte
● Exit ISR, recv next byte on next interrupt
UPSD33xx
Obsolete ^{Product(s) - Obsolete Product(s)}
140/272
Doc ID 9685 Rev 7