CHAPTER 12 USB FUNCTION CONTROLLER (USBF)
Preliminary User’s Manual U19014EJ1V0UD
325
Figure 12-3. Operation of UF0E0ST Register
(a) Normal
Status of
UF0E0ST register
Completion of
normal reception of
SETUP token
Completion of
normal reception of
SETUP token
CPUDEC bit of
UF0IS1 register
PROT
bit of
UF0IS1
register
Hardware clear
FW processing
INT clear
(FW clear)
Completion of
decoding
request
Completion
of reading
FIFO
Completion
of decoding
request
Start of
reading
FIFO
INT clear
(FW clear)
Hardware processing
(b) When SETUP transaction is received more than once
Status of
UF0E0ST register
Completion of
normal reception of
SETUP token
Start of
reception
of second
SETUP token
Completion
of normal
reception
of second
SETUP token
CPUDEC bit of
UF0IS1 register
PROT
bit of
UF0IS1
register
Hardware
clear
INT clear
(FW clear)
INT clear
(FW clear)
Completion of
decoding request
Completion of
decoding request
Completion of
reading FIFO
Hardware clear
on completion of
reading 8 bytes
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