Datasheet

Page xxii of xxvi
Section 21 I
2
C Bus Interface 2 (IIC2)................................................................ 729
21.1 Features.............................................................................................................................. 729
21.2 Register Descriptions......................................................................................................... 732
21.2.1 IIC2/SSU Select Register (ICSUSR) .................................................................... 732
21.2.2 I
2
C Bus Control Register 1 (ICCR1)..................................................................... 733
21.2.3 I
2
C Bus Control Register 2 (ICCR2)..................................................................... 735
21.2.4 I
2
C Bus Mode Register (ICMR)............................................................................ 737
21.2.5 I
2
C Bus Interrupt Enable Register (ICIER)........................................................... 739
21.2.6 I
2
C Bus Status Register (ICSR)............................................................................. 741
21.2.7 Slave Address Register (SAR).............................................................................. 744
21.2.8 I
2
C Bus Transmit Data Register (ICDRT) ............................................................ 745
21.2.9 I
2
C Bus Receive Data Register (ICDRR).............................................................. 745
21.2.10 I
2
C Bus Shift Register (ICDRS)............................................................................ 745
21.3 Operation ........................................................................................................................... 746
21.3.1 I
2
C Bus Format...................................................................................................... 746
21.3.2 Master Transmit Operation................................................................................... 747
21.3.3 Master Receive Operation .................................................................................... 749
21.3.4 Slave Transmit Operation ..................................................................................... 751
21.3.5 Slave Receive Operation....................................................................................... 754
21.3.6 Clock Synchronous Serial Format ........................................................................ 755
21.3.7 Noise Filter Circuit ............................................................................................... 758
21.3.8 Example of Use..................................................................................................... 759
21.4 Interrupt Request................................................................................................................ 763
21.5 Bit Synchronous Circuit..................................................................................................... 764
21.6 Usage Notes ....................................................................................................................... 765
21.6.1 SCL and SDA pins selected by PMC ................................................................... 765
21.6.2 Restriction on Use of Bit Manipulation Instructions to Set MST
and TRS in Multi-Master Usage........................................................................... 765
21.6.3 Note regarding Master Receive Mode of I
2
C-Bus Interface Mode ....................... 765
21.6.4 Note on Access to ICE in ICCR1
and IICRST in ICCR2 during I
2
C Bus Operation ................................................. 766
Section 22 Synchronous Serial Communication Unit (SSU) ............................767
22.1 Features.............................................................................................................................. 767
22.2 Register Descriptions......................................................................................................... 769
22.2.1 IIC2/SSU Select Register (ICSUSR) .................................................................... 769
22.2.2 SS Control Register H (SSCRH) .......................................................................... 770
22.2.3 SS Control Register L (SSCRL) ........................................................................... 771
22.2.4 SS Mode Register (SSMR) ................................................................................... 773