CHAPTER 12 USB FUNCTION CONTROLLER (USBF)
Preliminary User’s Manual U19014EJ1V0UD
310
(25) UF0 INT clear 4 register (UF0IC4)
This register controls clearing the interrupt sources indicated by the UF0IS4 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 UF0EnIM register (n = 1, 2)
and the current setting of the interface.
1
UF0IC4
1
5
SETINTC
1
3
1
2
1
1
1
1
Address
FF4EH
After reset
FFH
0
4
6
7
Bit position
Bit name
Function
5
SETINTC
This bit clears the SET_INT interrupt.
0: Clear
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