MPD789322 Datasheet, PDF (47/96 Pages) NEC – 8-BIT SINGLE-CHIP MICROCONTROLLER

Figure 5-22. Block Diagram of Serial Interface 10
Serial operation mode register 10
(CSIM10)
Internal bus
CSIE10 TPS101 TPS100 DIR10 CSCK10
SI10/P22
SO10/P21
PM21
Transmission/reception shift
register 10 (SIO10)
SCK10/P20
PM20
Serial clock counter
Interrupt request
generator
INTCSI10
Clock control
F/F
circuit
fX/2²
fX/2³
TPS101 TPS100