20.7.5
Writing Data to TDR .............................................................................................................................. 674
20.7.6
Restrictions on Clock Synchronous Transmission ................................................................................. 675
20.7.7
Restrictions on Using DTC or DMAC ................................................................................................... 675
20.7.8
SCI Operations during Power-Down State ............................................................................................ 675
20.7.9
External Clock Input in Clock Synchronous Mode ................................................................................ 678
21.
CRC Calculator (CRC) .............................................................................................................................. 679
21.1
Overview ......................................................................................................................................................... 679
21.2
Register Descriptions ...................................................................................................................................... 680
21.2.1
CRC Control Register (CRCCR) ........................................................................................................... 680
21.2.2
CRC Data Input Register (CRCDIR) ..................................................................................................... 681
21.2.3
CRC Data Output Register (CRCDOR) ................................................................................................. 681
21.3
Operation ......................................................................................................................................................... 682
21.4
Usage Notes .................................................................................................................................................... 685
21.4.1
Module Stop Function Setting................................................................................................................ 685
21.5
Note on Transmission ..................................................................................................................................... 685
22.
I
2
C Bus Interface (RIIC) ............................................................................................................................ 686
22.1
Overview ......................................................................................................................................................... 686
22.2
Register Descriptions ...................................................................................................................................... 690
22.2.1
I
2
C Bus Control Register 1 (ICCR1) ...................................................................................................... 692
22.2.2
I
2
C Bus Control Register 2 (ICCR2) ...................................................................................................... 695
22.2.3
I
2
C Bus Mode Register 1 (ICMR1) ........................................................................................................ 699
22.2.4
I
2
C Bus Mode Register 2 (ICMR2) ........................................................................................................ 701
22.2.5
I
2
C Bus Mode Register 3 (ICMR3) ........................................................................................................ 703
22.2.6
I
2
C Bus Function Enable Register (ICFER) ........................................................................................... 706
22.2.7
I
2
C Bus Status Enable Register (ICSER) ............................................................................................... 708
22.2.8
I
2
C Bus Interrupt Enable Register (ICIER) ............................................................................................ 710
22.2.9
I
2
C Bus Status Register 1 (ICSR1) ......................................................................................................... 712
22.2.10
I
2
C Bus Status Register 2 (ICSR2) ......................................................................................................... 716
22.2.11
Slave Address Register Ly (SARLy) (y = 0 to 2) .................................................................................. 720
22.2.12
Slave Address Register Uy (SARUy) (y = 0 to 2).................................................................................. 721
22.2.13
I
2
C Bus Bit Rate Low-Level Register (ICBRL) ..................................................................................... 722
22.2.14
I
2
C Bus Bit Rate High-Level Register (ICBRH) .................................................................................... 723
22.2.15
I
2
C Bus Transmit Data Register (ICDRT) ............................................................................................. 725
22.2.16
I
2
C Bus Receive Data Register (ICDRR) ............................................................................................... 725
22.2.17
I
2
C Bus Shift Register (ICDRS) ............................................................................................................. 725
22.2.18
Internal Counter for Timeout (TMOCNT) ............................................................................................. 726
22.3
Operation ......................................................................................................................................................... 727
22.3.1
Communication Data Format ................................................................................................................. 727
22.3.2
Initial Settings ........................................................................................................................................ 728