NEC mPD78F0730 Preliminary User's Manual page 381

Remark
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CHAPTER 12 USB FUNCTION CONTROLLER (USBF)
Figure 12-22. Normal Processing for Bulk Transfer (OUT)
UF0BO1 register data is read
up to the value read by the
UF0BO1L register.
♦: Processing by hardware
Preliminary User's Manual U19014EJ1V0UD
START
No
OUT token received?
Yes
Writing UF0BO1 register
No
Normal reception?
Yes
BKO1DT = 1 (UF0IS3)
BKOUT1 = 1 (UF0EPS0)
INTUSB1B active
Reading UF0IS3 register
No
BKO1DT = 1?
(UF0IS3)
Yes
Updating data length
of UF0BO1L register
Reading UF0BO1 register
Yes
Data length other than 0?
Data length = Data length − 1
No
BKO1DT = 0 (UF0IS3)
BKOUT1 = 0 (UF0EPS0)
Updating data length
of UF0BO1L register
No
Data length = 0?
Yes
Yes
OUT token received?
No
END
Clearing UF0BO1 register
Illegal processing
Illegal processing
381