Datasheet

V850ES/JG3-H, V850ES/JH3-H CHAPTER 21 USB FUNCTION CONTROLLER (USBF)
R01UH0042EJ0500 Rev.5.00 Page 1143 of 1513
Aug 12, 2011
Figure 21-9. Operation of UF0BI1 Register (2/3)
(b) Operation example 2
SIE side
CPU side
Status of
UF0BI1 register
Transmission
completed
FIFO toggle
ACK
reception
Transmission
starts
Transmission
completed
ACK
reception
Re-
transmission
starts
ACK cannot
be received
BKI1NK bit of
UF0EN register
64-byte transfer Re-transfer64-byte transfer
FIFO_0
FIFO_1
FIFO_1
FIFO_0
Writing
FIFO
starts
Writing
FIFO
completed
Writing
FIFO
starts
Writing
FIFO
completed
BKI1DT bit of
UF0IS2 register
Hardware clear
INT clear
(FW clear)