Datasheet

V850ES/JG3-H, V850ES/JH3-H CHAPTER 21 USB FUNCTION CONTROLLER (USBF)
R01UH0042EJ0500 Rev.5.00 Page 1140 of 1513
Aug 12, 2011
Figure 21-8. Operation of UF0BO2 Register (2/2)
(b) Operation example 2
SIE side
CPU side
Status of
UF0BO2 register
Reception
completed
Reception
starts
Null
reception
completed
Null
reception
completed
FIFO toggle
FIFO toggle
ACK
transmission
Reception
starts
Reception
completed
ACK
transmission
BKO2NL bit of
UF0IS3 register
BKOUT2 bit of
UF0EPS0 register
BKO2DT bit of
UF0IS3 register
Transfer of data less
than 64 bytes
0-byte
transfer
0-byte
transfer
64-byte transfer
FIFO_0
FIFO_1
FIFO_1
FIFO_0
Reading
FIFO
starts
Reading
FIFO
completed
FW clear
FW clear
FIFO_0
FIFO_1
64-byte transfer