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Bit
Bit Name
4
EP2 PKTE
3
2
EP0s RDFN Undefined W
1
EP0o RDFN Undefined W
0
EP0i PKTE
Initial
Value
R/W
Description
Undefined W
EP2 Packet Enable
After one packet of data has been written to the
endpoint 2 transmit FIFO buffer, the transmit data is
fixed by writing 1 to this bit.
Undefined
Reserved
The initial value should not be changed.
EP0s Read Complete
Write 1 to this bit after data for the EP0s command
FIFO has been read. Writing 1 to this bit enables
transfer of data in the following data stage. A NAK
handshake is returned in response to transfer
requests from the host in the data stage until 1 is
written to this bit.
EP0o Read Complete
Writing 1 to this bit after one packet of data has been
read from the endpoint 0 transmit FIFO buffer
initializes the FIFO buffer, enabling the next packet to
be received.
Undefined W
EP0i Packet Enable
After one packet of data has been written to the
endpoint 0 transmit FIFO buffer, the transmit data is
fixed by writing 1 to this bit.
Section 22 USB Function Module (USB)
Rev. 1.00 Mar. 12, 2008 Page 847 of 1178
REJ09B0403-0100
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