AT91SAM9G45-EKES Atmel, AT91SAM9G45-EKES Datasheet - Page 839

• 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

Figure 38-10. Data IN Followed By Status OUT Transfer at the End of a Control Transfer
Figure 38-11. Data OUT Followed by Status IN Transfer
839
USB Bus
Packets
RX_BK_RDY
(UDPHS_EPTSTAx)
TX_COMPLT
(UDPHS_EPTSTAx)
AT91SAM9G45
Token IN
USB Bus
Packets
RX_BK_RDY
(UDPHS_EPTSTAx)
TX_PK_RDY
(UDPHS_EPTSTAx)
Device Sends the Last
Data Payload to Host
Data IN
Note: A NAK handshake is always generated at the first status stage token.
Note: Before proceeding to the status stage, the software should determine that there is no risk
of extra data from the host (data stage). If not certain (non-predictable data stage length), then
the software should wait for a NAK-IN interrupt before proceeding to the status stage. This pre-
caution should be taken to avoid collision in the FIFO.
Token OUT
Set by Hardware
Host Sends the Last
Data Payload to the Device
Set by Hardware
ACK
Data OUT
Set by Firmware
Token OUT
Device Sends a
Status OUT to Host
Cleared by Firmware
Interrupt Pending
ACK
Data OUT (ZLP)
Token IN
Device Sends a Status IN
to the Host
Cleared by Firmware
Data IN
ACK
Token OUT
ACK
Set by Hardware
Clear by Hardware
Data OUT (ZLP)
Cleared by Firmware
6438F–ATARM–21-Jun-10
Interrupt
Pending
ACK