ATEVK1104 Atmel, ATEVK1104 Datasheet - Page 516
![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: 516 of 826
- Download datasheet (20Mb)
30.7.2.12
30.7.2.12.1 Overview
Figure 30-17. Example of an IN Endpoint with 1 Data Bank
32058J–AVR32–04/11
TXINI
FIFOCON
Management of IN Endpoints
SW
The OUT retry is always ACKed. This reception sets RXOUTI and TXINI. Handle this with the
following software algorithm:
Once the OUT status stage has been received, the USB controller waits for a SETUP request.
The SETUP request has priority over any other request and has to be ACKed. This means that
any other flag should be cleared and the FIFO reset when a SETUP is received.
The firmware has to take care of the fact that the byte counter is reset when a zero-length OUT
packet is received.
IN packets are sent by the USB device controller upon IN requests from the host. All the data
can be written by the firmware which acknowledges or not the bank when it is full.
The endpoint must be configured first.
The TXINI bit is set by hardware at the same time as FIFOCON when the current bank is free.
This triggers an EPXINT interrupt if TXINE = 1.
TXINI shall be cleared by software (by setting the TXINIC bit) to acknowledge the interrupt, what
has no effect on the endpoint FIFO.
The firmware then writes into the FIFO and clears the FIFOCON bit to allow the USB controller
to send the data. If the IN endpoint is composed of multiple banks, this also switches to the next
bank. The TXINI and FIFOCON bits are updated by hardware in accordance with the status of
the next bank.
TXINI shall always be cleared before clearing FIFOCON.
The RWALL bit is set by hardware when the current bank is not full, i.e. the software can write
further data into the FIFO.
write data to CPU
NAK
set TXINI
wait for RXOUTI OR TXINI
if RXOUTI, then clear flag and return
if TXINI, then continue
BANK 0
SW
IN
(bank 0)
DATA
HW
ACK
SW
write data to CPU
BANK 0
AT32UC3A
SW
IN
516
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