NEC switch - Manual (Page 156)

CHAP
T
E
R 9 S
E
R
IA
L
I
N
T
E
RF
ACE
10
U
s
er’
s
Manual
U
12978E
J3V
0
U
D
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