upd78f0730 Renesas Electronics Corporation., upd78f0730 Datasheet - Page 330

• Manufacturer Part Number: upd78f0730
• Description: 8-bit Single-chip Microcontroller
• Manufacturer: Renesas Electronics Corporation.

330
UF0EPS0
UF0BO1 register
UF0IS3 register
UF0IS3
BKOUT1
BKO1DT
BKO1NL bit of
CPU side
Status of
SIE side
register
register
bit of
bit of
completed
reception
Null
transfer
0-byte
Reception
starts
CHAPTER 12 USB FUNCTION CONTROLLER (USBF)
Figure 12-5. Operation of UF0BO1 Register (2/2)
64-byte transfer
FIFO_0
FIFO_1
FW clear
completed
Reception
Preliminary User’s Manual U19014EJ1V0UD
transmission
(b) Operation example 2
ACK
toggle
FIFO
transfer
completed
0-byte
reception
Reading
starts
FIFO
Null
Reception
starts
FIFO_1
FIFO_0
less than 64 bytes
Transfer of data
FW clear
completed
Reception
transmission
completed
Reading
FIFO
ACK
toggle
FIFO
64-byte transfer
FIFO_0
FIFO_1