MC3S12RG128 Datasheet, PDF (322/546 Pages) Freescale Semiconductor, Inc – Microcontrollers

Chapter 11 Inter-Integrated Circuit (IICV2) Block Description
11.2 External Signal Description
The IICV2 module has two external pins.
11.2.1 IIC_SCL — Serial Clock Line Pin
This is the bidirectional serial clock line (SCL) of the module, compatible to the IIC bus specification.
11.2.2 IIC_SDA — Serial Data Line Pin
This is the bidirectional serial data line (SDA) of the module, compatible to the IIC bus specification.
11.3 Memory Map and Register Definition
This section provides a detailed description of all memory and registers for the IIC module.
11.3.1 Register Descriptions
This section consists of register descriptions in address order. Each description includes a standard register
diagram with an associated figure number. Details of register bit and field function follow the register
diagrams, in bit order.
Register
Name
0x0000
IBAD
0x0001
IBFD
0x0002
IBCR
Bit 7
R
ADR7
W
R
IBC7
W
R
IBEN
W
6
ADR6
IBC6
IBIE
5
ADR5
IBC5
MS/SL
4
ADR4
IBC4
Tx/Rx
3
ADR3
IBC3
TXAK
2
ADR2
IBC2
0
RSTA
1
ADR1
Bit 0
0
IBC1
IBC0
0
IBSWAI
0x0003
R TCF
IAAS
IBB
0
SRW
RXAK
IBSR
W
IBAL
IBIF
0x0004
R
IBDR
D7
W
D6
D5
D4
D3
D2
D1
D0
= Unimplemented or Reserved
Figure 11-2. IIC Register Summary
MC3S12RG128 Data Sheet, Rev. 1.05
322
Freescale Semiconductor