User manual

...the world's most energy friendly microcontrollers
2012-04-24 - Giant Gecko Family - d0053_Rev0.96 253
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Figure 15.8. Transmit Transaction-Level Operation in Slave Mode
Set up the
channel/endpoint
Write 1 packet to the
Transmit FIFO
Get channel/endpoint
interrupt status
Done
Start
Rewrite packet to
the Transmit FIFO
Yes
Yes
No
Yes
No
Transfer
complete?
Retry
required?
Get
interrupt?
No
Figure 15.9. Receive Transaction-Level Operation in Slave Mode
Done
Start
Yes
Retry
required?
No
No
Transfer
complete
?
Yes
Read Receive
Status Queue
No
RXFLVL or
Ch/EP interrupt
?
Yes
Set up the
Channel / endpoint
Read the packet
from the
Receive FIFO