Sharp LH79524 - Chapter 9 - I 2 C Module

Version 1.0 9-1
Chapter 9
I
2
C Module
The I
2
C Module implements the Inter-IC bus (I
2
C), and provides:
• Two-wire synchronous serial interface
• Operation in both the standard mode, for data rates up to 100 Mbits/s, and the fast
mode, with data rates up to 400 Mbits/s
• Communication with devices in the fast mode as well as the standard mode if both are
attached to the bus.
The I
2
C Module block diagram appears in Figure 9-1.
Figure 9-1. I
2
C Module Block Diagram
START/STOP
ARBITRATION
CONTROL
IN/OUT
DATA SHIFT
REGISTER
ADDRESS
COMPARE
CLOCK
CONTROL
HCLK
SCL
SDA
REGISTERS
APB
REGISTER
INTERFACE
INTERRUPT
LH79525-56