CHAPTER 12 USB FUNCTION CONTROLLER (USBF)
Preliminary User’s Manual U19014EJ1V0UD
368
Figure 12-19. CPUDEC Request for Control Transfer (4/12)
(b) Control transfer (read) (2/4)
FIFO full?
E0DED = 1
(UF0DEND)
EP0NKW = 1
(UF0E0N)
Transmitting data of
UF0E0W register
Yes
No
IN token received?
Yes
No
PROT = 1?
(UF0IS1)
No
Yes
G
H
ACK received?
Yes
No
EP0WC = 1
(UF0FIC0)
F
Remark
♦
: Processing by hardware
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