NEC switch - Block Diagram of Serial Interface 10

CHAPTER 9 SERIAL INTERFACE 10
User’s Manual U12978EJ3V0UD
156
Figure 9-1. Block Diagram of Serial Interface 10
Internal bus
CSIE10 TPS100 DIR10
Serial operation mode
register 10 (CSIM10)
CSCK10
Transmit/receive shift register 10
(SIO10)
Serial clock counter
Clock controller
F/F
Interrupt
request
generator
Selector
Selector
SI10/P22
SO10/P21
SCK10/P20
f X /2
2
f X /2
3
INTCSI10