W78E378 Datasheet, PDF (22/38 Pages) Winbond – MONITOR MICROCONTROLLER

Preliminary W78E378/W78C378/W78C374
Master/Receiver Mode
Set STA to generate
a START.
08H
A START has been
transmitted.
From Slave Mode (C)
From Master/Transmitter (A)
(STA,STO,SI,AA)=(0,0,0,X)
SLA+R will be transmitted;
ACK will be received.
48H
SLA+R has been transmitted;
NOT ACK has been received.
40H
SLA+R has been transmitted;
ACK has been received.
(STA,STO,SI,AA)=(0,0,0,0)
Data byte will be received;
NOT ACK will be returned.
(STA,STO,SI,AA)=(0,0,0,1)
Data byte will be received;
ACK will be returned.
58H
Data byte has been received;
NOT ACK has been returned.
50H
Data byte has been received;
ACK has been returned.
(STA,STO,SI,AA)=(1,1,0,X)
A STOP followed by a START will
be transmitted;
STO flag will be reset.
Send a STOP
followed by a START
(STA,STO,SI,AA)=(0,1,0,X)
A STOP will be transmitted;
STO flag will be reset.
Send a STOP
(STA,STO,SI,AA)=(1,0,0,X)
A repeated START will be transmitted.
10H
A repeated START has been
transmitted.
38H
Arbitration lost in NOT ACK bit.
(STA,STO,SI,AA)=(0,0,0,X)
SLA+W will be transmitted;
ACK will be received;
SIO1 will be switched to MST/TRX mode.
(STA,STO,SI,AA)=(1,0,0,X)
A START will be transmitted
when the bus becomes free.
(STA,STO,SI,AA)=(0,0,0,X)
I2C bus will be released;
Not addressed SLV mode will be entered.
To Master/Transmitter (B)
Send a START
when bus becomes free
Enter NAslave
- 22 -