ATEVK1104 Atmel, ATEVK1104 Datasheet - Page 746
![KIT DEV/EVAL FOR AVR32 AT32UC3A](/photos/9/20/92035/atevk1104_sml.jpg)
ATEVK1104
Manufacturer Part Number
ATEVK1104
Description
KIT DEV/EVAL FOR AVR32 AT32UC3A
Manufacturer
Atmel
Series
AVR®32r
Type
MCUr
Datasheets
1.ATAVRONE-PROBECBL.pdf
(16 pages)
2.ATEVK1104.pdf
(826 pages)
3.ATEVK1104.pdf
(90 pages)
4.ATEVK1104.pdf
(6 pages)
5.ATEVK1104.pdf
(12 pages)
Specifications of ATEVK1104
Contents
Evaluation Board, Software and Documentation
Processor To Be Evaluated
AT32UC3A3
Data Bus Width
32 bit
Interface Type
USB, SPI, USART
Silicon Manufacturer
Atmel
Core Architecture
AVR
Core Sub-architecture
AVR UC3
Silicon Core Number
AT32UC3A3256
Silicon Family Name
AVR
Kit Contents
Board CD Docs
Rohs Compliant
Yes
For Use With/related Products
AT32UC3A3
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
ATEVK1104
Manufacturer:
Atmel
Quantity:
135
- ATAVRONE-PROBECBL PDF datasheet
- ATEVK1104 PDF datasheet #2
- ATEVK1104 PDF datasheet #3
- ATEVK1104 PDF datasheet #4
- ATEVK1104 PDF datasheet #5
- Current page: 746 of 826
- Download datasheet (20Mb)
36.6.4
36.6.4.1
32058J–AVR32–04/11
Service Access Bus
Busy reporting
instruction for the first time. SAMPLE/PRELOAD can also be used for taking a snapshot of the
external pins during normal operation of the part.
When using the JTAG interface for Boundary-Scan, the JTAG TCK clock is independent of the
internal chip clock, which is not required to run.
A number of private instructions are used to access Service Access Bus (SAB) resources. Each
of these are described in detail in SAB address map in the Service Access Bus chapter. The
MEMORY_SIZED_ACCESS instruction allows a sized read or write to any 36-bit address on the
bus. MEMORY_WORD_ACCESS is a shorthand instruction for 32-bit accesses to any 36-bit
address, while the NEXUS_ACCESS instruction is a Nexus-compliant shorthand instruction for
accessing the 32-bit OCD registers in the 7-bit address space reserved for these. These instruc-
tions require two passes through the Shift-DR TAP state: one for the address and control
information, and one for data.
To increase the transfer rate, consecutive memory accesses can be accomplished by the
MEMORY_BLOCK_ACCESS instruction, which only requires a single pass through Shift-DR for
data transfer only. The address is automatically incremented according to the size of the last
SAB transfer.
The access time to SAB resources depends on the type of resource being accessed. It is possi-
ble to read external memory through the EBI, in which case the latency may be very long. It is
possible to abort an ongoing SAB access by the CANCEL_ACCESS instruction, to avoid hang-
ing the bus due to an extremely slow slave.
"The access time to SAB resources depends on the type of resource being
accessed. It is possible to abort an ongoing SAB access by the
CANCEL_ACCESS instruction, to avoid hanging the bus due to an extremely
slow slave."
As the time taken to perform an access may vary depending on system activity and current chip
frequency, all the SAB access JTAG instructions can return a busy indicator. This indicates
whether a delay needs to be inserted, or an operation needs to be repeated in order to be suc-
cessful. If a new access is requested while the SAB is busy, the request is ignored.
The SAB becomes busy when:
The SAB becomes ready again when:
• Entering Update-DR in the address phase of any read operation, e.g. after scanning in a
• Entering Update-DR in the data phase of any write operation, e.g. after scanning in data for a
• Entering Update-DR during a MEMORY_BLOCK_ACCESS.
• Entering Update-DR after scanning in a counter value for SYNC.
• Entering Update-IR after scanning in a MEMORY_BLOCK_ACCESS if the previous access
• A read or write operation completes.
NEXUS_ACCESS address with the read bit set.
NEXUS_ACCESS write.
was a read and data was scanned after scanning the address.
AT32UC3A
746
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