Serial Interface Block Diagram - NEC PD75402A User Manual

P03/SI
P02/SO/SB0
P01/SCK
Fig. 5-24 Serial Interface Block Diagram
Internal Bus
Bit
8 8
Test
CSIM
Bit
8
Manipulation
Slave Address
Register (SVA)
(8)
Match
RELT
Signal
Address Comparator
CMDT
(8)
SO
Latch
SET CLR
Shift Registe (SIO)r
D Q
(8)
RELD
Bus Release/
CMDD
Command/Ac-
Knowledge ACKD
Detection
Circuit
INTCSI
Serial Clock
Control
Copunter
Circuit
Serial Clock
Control
Cirucit
Bit Test
SBIC
Busy/Ac-
Knowledge
Output
Circuit
INTCSI
(IRQCSI
Signal
Setting)
4
f /2
Serial xx
Clock
Selector
External
SCK