AT91SAM9G45-EKES Atmel, AT91SAM9G45-EKES Datasheet - Page 841

• Manufacturer Part Number: AT91SAM9G45-EKES
• Description: KIT EVAL FOR AT91SAM9G45
• Manufacturer: Atmel
• Series: AT91SAM Smart ARMr
• Type: MCUr

Specifications of AT91SAM9G45-EKES

• Contents: Board
• Processor To Be Evaluated: SAM9G45
• Data Bus Width: 32 bit
• Interface Type: I2C, SPI, UART
• Maximum Operating Temperature: + 50 C
• Minimum Operating Temperature: - 10 C
• Operating Supply Voltage: 1.8 V to 3.3 V
• For Use With/related Products: AT91SAM9G45
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: Q4626953

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AT91SAM9G45
the required number of packets per microframe, otherwise, the host will notice a sequencing
problem.
A response should be made to the first token IN recognized inside a microframe under the fol-
lowing conditions:
At the end of a microframe in which at least one data bank has been transmitted, if less than
NB_TRANS banks have been validated for that microframe, an error condition is flagged
(ERR_TRANS is set in UDPHS_EPTSTAx).
Cases of Error (in UDPHS_EPTSTAx)
• If at least one bank has been validated, the correct DATAx corresponding to the programmed
• If no bank is validated yet, the default DATA0 ZLP is answered and underflow is flagged
• If no data bank has been validated at the time when a response should be made for the
• If no data bank has been validated at the time when a response should be made for the last
• If at the end of a microframe no valid token IN has been recognized, no data bank is flushed
• ERR_FL_ISO: There was no data to transmit inside a microframe, so a ZLP is answered by
• ERR_FLUSH: At least one packet has been sent inside the microframe, but the number of
• ERR_TRANS: At least one packet has been sent inside the microframe, but the number of
• ERR_FL_ISO + ERR_FLUSH: At least one packet has been sent inside the microframe, but
• ERR_FL_ISO + ERR_TRANS: At least one packet has been sent inside the microframe, but
• ERR_FLUSH + ERR_TRANS: The first token IN has been answered and it was the only one
Number Of Transactions per Microframe (NB_TRANS) should be answered. In case of a
subsequent missed or corrupted token IN inside the microframe, the USB 2.0 Core available
data bank(s) that should normally have been transmitted during that microframe shall be
flushed at its end. If this flush occurs, an error condition is flagged (ERR_FLUSH is set in
UDPHS_EPTSTAx).
(ERR_FL_ISO is set in UDPHS_EPTSTAx). Then, no data bank is flushed at microframe
end.
second transaction of NB_TRANS = 3 transactions microframe, a DATA1 ZLP is answered
and underflow is flagged (ERR_FL_ISO is set in UDPHS_EPTSTAx). If and only if remaining
untransmitted banks for that microframe are available at its end, they are flushed and an error
condition is flagged (ERR_FLUSH is set in UDPHS_EPTSTAx).
programmed transaction of a microframe, a DATA0 ZLP is answered and underflow is flagged
(ERR_FL_ISO is set in UDPHS_EPTSTAx). If and only if the remaining untransmitted data
bank for that microframe is available at its end, it is flushed and an error condition is flagged
(ERR_FLUSH is set in UDPHS_EPTSTAx).
and no error condition is reported.
default.
token IN received is lesser than the number of transactions actually validated (TX_BK_RDY)
and likewise with the NB_TRANS programmed.
token IN received is lesser than the number of programmed NB_TRANS transactions and the
packets not requested were not validated.
the data has not been validated in time to answer one of the following token IN.
the data has not been validated in time to answer one of the following token IN and the data
can be discarded at the microframe end.
received, a second bank has been validated but not the third, whereas NB_TRANS was
waiting for three transactions.
6438F–ATARM–21-Jun-10