Datasheet

V850ES/JG3-H, V850ES/JH3-H CHAPTER 21 USB FUNCTION CONTROLLER (USBF)
R01UH0042EJ0500 Rev.5.00 Page 1199 of 1513
Aug 12, 2011
Figure 21-24. CPUDEC Request for Control Transfer (5/12)
(b) Control transfer (read) (3/4)
I
J
No transmit data?
E0INDT = 1 (UF0IS1)
EP0NKW = 0 (UF0E0N)
E0INDTC = 0
(UF0IC1)
STG = 1
(UF0IS1)
Yes
Yes
No
H
INTUSBF0 active
Reading UF0ISn register
E0INDT = 1?
(UF0IS1)
No
Yes
Data of Null packet received?
No
Illegal processing
Remarks 1. n = 0, 1
2. ♦: Processing by hardware