AT89C5131-PLTIL ATMEL Corporation, AT89C5131-PLTIL Datasheet - Page 105

• Manufacturer Part Number: AT89C5131-PLTIL
• Description: 8-bit Flash Microcontroller with Full Speed USB Device
• Manufacturer: ATMEL Corporation

Table 80. Status for Master Receiver Mode
4136B–USB–09/03
(SSCS)
Status
Code
08h
10h
38h
40h
48h
50h
58h
Status of the TWI Bus and
A START condition has been
A repeated START condition
Arbitration lost in SLA+R or
transmitted; ACK has been
transmitted; NOT ACK has
received; ACK has been
received; NOT ACK has
has been transmitted
Data byte has been
Data byte has been
SLA+R has been
SLA+R has been
TWI Hardware
been received
been returned
NOT ACK bit
transmitted
received
returned
No SSDAT action or
No SSDAT action or
No SSDAT action or
No SSDAT action or
Read data byte or
Read data byte or
Read data byte or
No SSDAT action
No SSDAT action
No SSDAT action
To/from SSDAT
Load SLA+R or
Read data byte
read data byte
Load SLA+W
Load SLA+R
Application Software Response
STA
X
X
X
0
1
0
0
1
0
1
0
0
1
0
1
To SSCON
STO
0
0
0
0
0
0
0
0
1
1
0
0
0
1
1
SI
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
AA
X
X
X
X
X
X
X
X
X
X
X
0
1
0
1
Next Action Taken by TWI Software
SLA+W will be transmitted;
ACK will be transmitted
SLA+W will be transmitted;
ACK will be transmitted
SLA+W will be transmitted
Logic will switched to master transmitter mode
TWI bus will be released and not addressed
slave mode will be entered
A START condition will be transmitted when the
bus becomes free
Data byte will be received and NOT ACK will be
returned
Data byte will be received and ACK will be
returned
Repeated START will be transmitted
STOP condition will be transmitted and STO flag
will be reset
STOP condition followed by a START condition
will be transmitted and STO flag will be reset
Data byte will be received and NOT ACK will be
returned
Data byte will be received and ACK will be
returned
Repeated START will be transmitted
STOP condition will be transmitted and STO flag
will be reset
STOP condition followed by a START condition
will be transmitted and STO flag will be reset
AT89C5131
105