A - 12
Clock Synchronous Serial I/O Mode ................................................................................ 471
Clock Asynchronous Serial I/O (UART) Mode ................................................................. 479
C Mode) ............................................................................................. 488
Special Mode 2 ............................................................................................................... 503
Special Mode 3 (IE Mode) .............................................................................................. 507
Special Mode 4 (SIM Mode) (UART2) ............................................................................. 509
Interrupt Related Registers .............................................................................................. 514
Reception Interrupt .......................................................................................................... 515
23.5.1
Common Notes on Multiple Modes ................................................................................. 516
23.5.2
Clock Synchronous Serial I/O Mode ................................................................................ 516
23.5.3
Special Mode 1 (I
2
C Mode) ............................................................................................. 517
23.5.4
Special Mode 4 (SIM Mode) ............................................................................................ 519
Peripheral Clock Select Register (PCLKR) ..................................................................... 523
SI/Oi Transmit/Receive Register (SiTRR) (i = 3, 4) ......................................................... 523
SI/Oi Control Register (SiC) (i = 3, 4) .............................................................................. 524
SI/Oi Bit Rate Register (SiBRG) (i = 3, 4) ........................................................................ 525
SI/O3, 4 Control Register 2 (S34C2) ............................................................................... 525
Basic Operations ............................................................................................................. 526
CLK Polarity Selection ..................................................................................................... 526
LSB First or MSB First Selection ..................................................................................... 527
Internal Clock ................................................................................................................... 528
Function for Selecting SOUTi State after Transmission ................................................... 529
External Clock ................................................................................................................. 530
SOUTi Pin ........................................................................................................................ 530
Function for Setting SOUTi Initial Value .......................................................................... 531
24.5.1
SOUTi Pin Level When SOUTi Output Is Disabled ......................................................... 533
24.5.2
External Clock Control ..................................................................................................... 533
24.5.3
Register Access When Using the External Clock ............................................................ 533
24.5.4
SiTRR Register Access ................................................................................................... 533
24.5.5
Pin Function Switch When Using the Internal Clock ....................................................... 533
24.5.6
Operation after Reset When Selecting the External Clock .............................................. 533
Summary of Contents for M16C Series
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