Renesas RL78/G1P Hardware User Manual page 13

CHAPTER 11 SERIAL ARRAY UNIT .................................................................................................. 308
11.1 Functions of Serial Array Unit ................................................................................................. 309
11.1.1 3-wire serial I/O (CSI00) ............................................................................................................... 309
11.1.2 UART (UART0) ............................................................................................................................ 310
11.2 Configuration of Serial Array Unit .......................................................................................... 311
11.2.1 Shift register ................................................................................................................................. 313
11.2.2 Lower 8/9 bits of the serial data register mn (SDRmn) ................................................................. 313
11.3 Registers Controlling Serial Array Unit .................................................................................. 315
11.3.1 Peripheral enable register 0 (PER0) ............................................................................................. 316
11.3.2 Serial clock select register m (SPSm) .......................................................................................... 317
11.3.3 Serial mode register mn (SMRmn) ............................................................................................... 318
11.3.4 Serial communication operation setting register mn (SCRmn) ..................................................... 319
11.3.5 Higher 7 bits of the serial data register mn (SDRmn) ................................................................... 322
11.3.6 Serial flag clear trigger register mn (SIRmn) ................................................................................ 323
11.3.7 Serial status register mn (SSRmn) ............................................................................................... 324
11.3.8 Serial channel start register m (SSm) ........................................................................................... 326
11.3.9 Serial channel stop register m (STm) ........................................................................................... 327
11.3.10 Serial channel enable status register m (SEm) .......................................................................... 328
11.3.11 Serial output enable register m (SOEm) ..................................................................................... 329
11.3.12 Serial output register m (SOm) ................................................................................................... 330
11.3.13 Serial output level register m (SOLm) ........................................................................................ 331
11.3.14 Serial standby control register m (SSCm) .................................................................................. 332
11.3.15 Input switch control register (ISC) .............................................................................................. 333
11.3.16 Noise filter enable register 0 (NFEN0) ........................................................................................ 334
11.3.17 Port mode register 3 (PM3) ........................................................................................................ 335
11.4 Operation Stop Mode ............................................................................................................... 336
11.4.1 Stopping the operation by units .................................................................................................... 337
11.4.2 Stopping the operation by channels ............................................................................................. 338
11.5 Operation of 3-Wire Serial I/O (CSI00) Communication ........................................................ 339
11.5.1 Master transmission ..................................................................................................................... 341
11.5.2 Master reception ........................................................................................................................... 350
11.5.3 Master transmission/reception ...................................................................................................... 359
11.5.4 Slave transmission ....................................................................................................................... 368
11.5.5 Slave reception ............................................................................................................................. 377
11.5.6 Slave transmission/reception ........................................................................................................ 383
11.5.7 SNOOZE mode function (CSI00) ................................................................................................. 392
11.5.8 Calculating transfer clock frequency ............................................................................................. 396
11.5.9 Procedure for processing errors that occurred during 3-wire serial I/O (CSI00)
communication ............................................................................................................................. 398
11.6 Clock Synchronous Serial Communication with Slave Select Input Function .................. 399
11.6.1 Slave transmission ....................................................................................................................... 402
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