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| SAM7X256_14 Datasheet, PDF (441/662 Pages) ATMEL Corporation – ARM-based Flash MCU | |||
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Figure 34-12. Stall Handshake (Data IN Transfer)
USB Bus
Packets
Data IN PID
FORCESTALL
STALLSENT
Stall PID
Cleared by Firmware
Set by Firmware
Interrupt Pending
Cleared by Firmware
Set by
USB Device
Figure 34-13. Stall Handshake (Data OUT Transfer)
USB Bus
Packets
Data OUT PID
Data OUT
Stall PID
FORCESTALL
STALLSENT
Set by Firmware
Interrupt Pending
Set by USB Device
Cleared by Firmware
SAM7X Series [DATASHEET]
6120KâATARMâ11-Feb-14
441
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