AT94K05AL ATMEL Corporation, AT94K05AL Datasheet - Page 145

• Manufacturer Part Number: AT94K05AL
• Description: Fpslic Devices Combine 5K Gates of Atmel's Patented AT40K Fpga Architecture, a 20 Mips Avr 8-bit Risc Microprocessor Core, Numerous Fixed Microcontroller Peripheries And up to 36K Bytes of Program And Data SRAM.
• Manufacturer: ATMEL Corporation

Table 43. Status Codes for Slave Transmitter Mode
Rev. 1138F–FPSLI–06/02
(TWSR)
Status
Code
$A8
$B0
$B8
$C0
$C8
Status of the 2-wire
Serial Bus and 2-wire
Serial Hardware
Own SLA+R has been
received;
ACK has been returned
Arbitration lost in
SLA+R/W as Master;
own SLA+R has been
received;
ACK has been returned
Data byte in TWDR has
been transmitted;
ACK has been received
Data byte in TWDR has
been transmitted;
NOT ACK has been
received
Last data byte in TWDR
has been transmitted
(TWAE = “0”);
ACK has been received
To/From TWDR
Load data byte or
Load data byte
Load data byte or
Load data byte
Load data byte or
Load data byte
No TWDR action or
No TWDR action or
No TWDR action or
No TWDR action
No TWDR action or
No TWDR action or
No TWDR action or
No TWDR action
Application Software Response
STA
X
X
X
X
X
X
0
0
1
1
0
0
1
1
STO
0
0
0
0
0
0
0
0
0
0
0
0
0
0
To TWCR
TWINT
1
1
1
1
1
1
1
1
1
1
1
1
1
1
TWEA
0
1
0
1
0
1
0
1
0
1
0
1
0
1
AT94K Series FPSLIC
Next Action Taken by 2-wire
Serial Hardware
Last data byte will be transmitted and NOT
ACK should be received
Data byte will be transmitted and ACK should
be received
Last data byte will be transmitted and NOT
ACK should be received
Data byte will be transmitted and ACK should
be received
Last data byte will be transmitted and NOT
ACK should be received
Data byte will be transmitted and ACK should
be received
Switched to the not addressed Slave mode;
no recognition of own SLA or GCA
Switched to the not addressed Slave mode;
own SLA will be recognized; GCA will be
recognized if GC = “1”
Switched to the not addressed Slave mode;
no recognition of own SLA or GCA; a START
condition will be transmitted when the bus
becomes free
Switched to the not addressed Slave mode;
own SLA will be recognized; GCA will be
recognized if GC = “1”; a START condition
will be transmitted when the bus becomes
free
Switched to the not addressed Slave mode;
no recognition of own SLA or GCA
Switched to the not addressed Slave mode;
own SLA will be recognized; GCA will be
recognized if GC = “1”
Switched to the not addressed Slave mode;
no recognition of own SLA or GCA; a START
condition will be transmitted when the bus
becomes free
Switched to the not addressed Slave mode;
own SLA will be recognized; GCA will be
recognized if GC = “1”; a START condition
will be transmitted when the bus becomes
free
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