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NEC PD78214 User Manual

Page 289

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260

µ

PD78214 Sub-Series

Fig. 10-1 Block Diagram of the Clock Synchronous Serial Interface

Internal bus

D

CLS1

CLS0

f

CLK

/32

f

CLK

/8

8-bit timer/counter 3 output

1/2

Serial

clock

selector

INTCSI

Interrupt

signal

generator

circuit

Bus release/command/

acknowledge detector

circuit

Serial clock counter

Serial clock control

circuit

N-ch open-drain

output enabled

Selector

P32/SCK

P33/SO/SB0

P27/SI

RESET

CTXE

CRXE

WUP

MOD1

CLS1

CLS0

1/8

CSIM

ACKT

CMDD

RELD

CMDT

RELT

ACKE

ACKD

BSYE

1/8

SBIC

8

Shift register SIO

RESET

Busy/

acknowledge

output circuit

Q

SO latch

SET

CLEAR

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