upd78f0730 Renesas Electronics Corporation., upd78f0730 Datasheet - Page 331

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

(6) UF0 bulk out 1 length register (UF0BO1L)
UF0BO1L
Bit position
The UF0BO1L register stores the length of the data held by the UF0BO1 register.
This register is read-only, in 8-bit units. A write access to this register is ignored.
The UF0BO1L register always updates the received data length while it is receiving data. If the final transfer is
abnormal reception, the UF0BO1L register is cleared to 00H, and an interrupt request is not generated. Only if
the reception is normal, the interrupt request is generated, and FW can read as much data from the UF0BO1
register as the value read from the UF0BO1L register. The value of the UF0BO1L register is decremented
each time the UF0BO1 register has been read.
7 to 0
BKO1L7
7
BKO1L7 to
BKO1L0
Bit name
BKO1L6
6
CHAPTER 12 USB FUNCTION CONTROLLER (USBF)
BKO1L5
These bits store the length of the data held by the UF0BO1 register.
5
Preliminary User’s Manual U19014EJ1V0UD
BKO1L4
4
BKO1L3
3
BKO1L2
2
Function
BKO1L1
1
BKO1L0
0
Address
FF77H
After reset
00H
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