NXP Semiconductors MPC5606S - Modes of Operation

Inter-Integrated Circuit Bus Controller Module (I
2
C)
MPC5606S Microcontroller Reference Manual, Rev. 7
730 Freescale Semiconductor
Figure 20-1. I
2
C block diagram
20.2 Modes of operation
The I
2
C module has the following modes of operation:
• Run mode: This is the basic mode of operation.
• Stop mode: This is the lowest power saving mode and allows the system to turn of all the clocks to
the I
2
C module. This state can only be entered when there are no active transfers on the bus.
20.3 External signal description
20.3.1 Overview
The Inter-Integrated Circuit (I
2
C) module has 2 external pins.
20.3.2 Detailed signal descriptions
20.3.2.1 SCL
This is the bidirectional Serial Clock Line (SCL) of the module, compatible with the I
2
C-Bus specification.
20.3.2.2 SDA
This is the bidirectional Serial Data line (SDA) of the module, compatible with the I
2
C-Bus specification.
In/Out
Data
Shift
Register
Address
Compare
SDA
Interrupt
Clock
Control
Start
Stop
Arbitration
Control
SCL
bus_clock
I
2
C
Registers