CHAPTER 12 USB FUNCTION CONTROLLER (USBF)
Preliminary User’s Manual U19014EJ1V0UD
309
(24) UF0 INT clear 3 register (UF0IC3)
This register controls clearing the interrupt sources indicated by the UF0IS3 register.
This register is write-only, in 8-bit units. If this register is read, the value FFH is read.
FW can clear an interrupt source by writing 0 to the corresponding bit of this register. Even a bit that is
automatically cleared to 0 by hardware can be cleared by FW before it is cleared by hardware. Writing 0 to a
bit of this register automatically sets the bit to 1. Writing 1 is invalid.
The related bits are invalid if each endpoint is not supported by the setting of the UF0E2IM register and the
current setting of the interface.
1
UF0IC3
1
5
1
1
3
BKO1
FLC
2
BKO1
NLC
1
BKO1
NAKC
BKO1
DTC
Address
FF4DH
After reset
FFH
0
4
6
7
Bit position
Bit name
Function
3
BKO1FLC
This bit clears the BKO1FL interrupt.
0: Clear
2
BKO1NLC
This bit clears the BKO1NL interrupt.
0: Clear
1
BKO1NAKC
This bit clears the BKO1NK interrupt.
0: Clear
0
BKO1DTC
This bit clears the BKO1DT interrupt.
0: Clear
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