ATEVK1105 Atmel, ATEVK1105 Datasheet - Page 241

• Manufacturer Part Number: ATEVK1105
• Description: KIT EVAL FOR AT32UC3A0
• Manufacturer: Atmel
• Series: AVR®32r
• Type: MCUr

Specifications of ATEVK1105

• Contents: Evaluation Board, Software and Documentation
• Processor To Be Evaluated: AT32UC3A0512
• Processor Series: AVR
• Data Bus Width: 32 bit
• Interface Type: USART, TWI, USB, SPI, Ethernet
• Operating Supply Voltage: 3.3 V
• Silicon Manufacturer: Atmel
• Core Architecture: AVR
• Core Sub-architecture: AVR UC3
• Silicon Core Number: AT32UC3A0512
• Silicon Family Name: AVR
• Kit Contents: Board CD Docs
• Rohs Compliant: Yes
• For Use With/related Products: AT32UC3A0
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Figure 24-24. Write Access Ordered by a Master
24.13.5.3
Figure 24-25. Master Performs a General Call
32058J-AVR32-04/11
GCACC
SVACC
EOSVACC
TXD
SVREAD
RXRDY
SVACC
TWD
General Call
S
S
G G G E E E N N N E E E R R R A A A L L L C C C A A A L L L L L L
0000000 + W
ADR
TWI answers with a NACK
SADR does not match,
Notes:
The general call is performed in order to change the address of the slave.
If a GENERAL CALL is detected, GACC is set.
After the detection of General Call, it is up to the programmer to decode the commands which
come afterwards.
In case of a WRITE command, the programmer has to decode the programming sequence and
program a new SADR if the programming sequence matches.
Figure 24-25 on page 241
Note:
W
NA
1. When SVACC is low, the state of SVREAD becomes irrelevant.
2. RXRDY is set when data has been transmitted from the shift register to the RHR and reset
1. This method allows the user to create an own programming sequence by choosing the pro-
WRITE command = 00000100X
A
RESET command = 00000110X
DATA
when this data is read.
gramming bytes and the number of them. The programming sequence has to be provided to
the master.
Reset or write DADD
Reset after read
NA
P/S/Sr
describes the General Call access.
SADR
TWI answers with an ACK
A
SADR matches,
W A
DATA1
SVREAD has to be taken into account only while SVACC is active
Programming sequence
DATA
New SADR
A
A
DATA2
Read RHR
A
A
New SADR
DATA NA S/Sr
AT32UC3A
A
P
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