Panasonic MN101C77C User Manual

XIII - 3

Overview

Chapter 13    Serial Interface 4

„

Serial interface 4 Block Diagram

P01/SDA

P53/SDA

M

U

X

 Transmission/reception  

          Shift register

Read/Write

-

ACKVALID

I2CBSY

SLVBSY

RSTRT

STRT

I2CINT

WRS

SC4STR

0

7

10

/

{

ck

Read

Communication mode 

   selection circuit

Addressing circuit

Address compare circuit

P02/SCL

P54/SCL

M

U

X

     Start/stop

detection circuit

         Bus busy

     detection circuit

I2CAD8

I2CAD9

I2CGEM

I2CADM

 I2CPSEL

-

-

SELI2C

SC4AD1

0

7

{

I2CAD0

I2CAD1

I2CAD3

I2CAD2

I2CAD4

I2CAD5

I2CAD6

I2CAD7

SC4AD0

0

7

        IRQ

control circuit

{

Match

{

SC4IRQ

Transmission buffer

         SC4TXB

Reception Buffer

      SC4RXB