UPSD3422_06 Datasheet, PDF (120/293 Pages) STMicroelectronics – Turbo Plus Series Fast Turbo 8032 MCU with USB and Programmable Logic

I²C interface
Figure 43. I²C interface SIOE block diagram
SCL / P3.7
uPSD34xx
INTR to 8032
8
S1STA - Interface Status
8
S1CON - Interface Control
S1SETUP - Sample Rate
8
Control (START Condition)
Open-
Drain
Output
Input
SDA / P3.6
Arbitration
and Sync
Clock
Generation
Timing and
Control
Periph
Clock
(fOSC)
Open-
Drain
Output
Input
Serial DATA OUT
AI09626
Serial DATA IN
8
Shift Direction
b7
S1DAT - Shift Register
ACK
b0 Bit
7
Comparator
7
b7
b0
8
S1ADR - Device Address
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