CHAPTER 12 USB FUNCTION CONTROLLER (USBF)
Preliminary User’s Manual U19014EJ1V0UD
373
Figure 12-19. CPUDEC Request for Control Transfer (9/12)
(c) Control transfer (write) (3/4)
L
INTUSB0B
active
Yes
STG = 1?
(UF0IS1)
No
STG = 1 (UF0IS1)
E0IN = 1 (UF0IS1)
Reading UF0ISn register
G
Clearing read data
No
PROT = 1?
(UF0IS1)
Yes
Request processing
EP0WC = 1
(UF0FIC0)
E0DED = 1
(UF0DEND)
M
Illegal processing
Remarks 1.
n = 0, 1
2.
♦
: Processing by hardware
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