Datasheet

Index-8
CHAPTER 12 SERIAL ARRAY UNIT .................................................................................................. 381
12.1 Functions of Serial Array Unit ................................................................................................. 381
12.1.1 3-wire serial I/O (CSI00, CSI01) ................................................................................................... 381
12.1.2 UART (UART0) ............................................................................................................................ 382
12.2 Configuration of Serial Array Unit .......................................................................................... 383
12.2.1 Shift register ................................................................................................................................. 385
12.2.2 Lower 9 bits of the serial data register mn (SDRmn) .................................................................... 385
12.3 Registers Controlling Serial Array Unit .................................................................................. 387
12.3.1 Peripheral enable register 0 (PER0) ............................................................................................. 388
12.3.2 Serial clock select register m (SPSm) .......................................................................................... 389
12.3.3 Serial mode register mn (SMRmn) ............................................................................................... 390
12.3.4 Serial communication operation setting register mn (SCRmn) ..................................................... 391
12.3.5 Higher 7 bits of the serial data register mn (SDRmn) ................................................................... 394
12.3.6 Serial flag clear trigger register mn (SIRmn) ................................................................................ 395
12.3.7 Serial status register mn (SSRmn) ............................................................................................... 396
12.3.8 Serial channel start register m (SSm) ........................................................................................... 398
12.3.9 Serial channel stop register m (STm) ........................................................................................... 399
12.3.10 Serial channel enable status register m (SEm) .......................................................................... 400
12.3.11 Serial output enable register m (SOEm) ..................................................................................... 401
12.3.12 Serial output register m (SOm) ................................................................................................... 402
12.3.13 Serial output level register m (SOLm) ........................................................................................ 403
12.3.14 Serial standby control register m (SSCm) .................................................................................. 404
12.3.15 Input switch control register (ISC) .............................................................................................. 405
12.3.16 Noise filter enable register 0 (NFEN0) ........................................................................................ 406
12.3.17 Registers controlling port functions of serial input/output pins .................................................... 407
12.4 Operation stop mode ............................................................................................................... 408
12.4.1 Stopping the operation by units .................................................................................................... 408
12.4.2 Stopping the operation by channels ............................................................................................. 409
12.5 Operation of 3-Wire Serial I/O (CSI00, CSI01) Communication............................................ 410
12.5.1 Master transmission ..................................................................................................................... 411
12.5.2 Master reception ........................................................................................................................... 421
12.5.3 Master transmission/reception ...................................................................................................... 430
12.5.4 Slave transmission ....................................................................................................................... 440
12.5.5 Slave reception ............................................................................................................................. 450
12.5.6 Slave transmission/reception ........................................................................................................ 457
12.5.7 SNOOZE mode function ............................................................................................................... 467
12.5.8 Calculating transfer clock frequency ............................................................................................. 472
12.5.9 Procedure for processing errors that occurred during 3-wire serial I/O (CSI00, CSI01)
communication ............................................................................................................................. 474
12.6 Operation of UART (UART0) Communication ....................................................................... 475
12.6.1 UART transmission ...................................................................................................................... 477