CHAPTER 12 USB FUNCTION CONTROLLER (USBF)
Preliminary User’s Manual U19014EJ1V0UD
307
(22) UF0 INT clear 1 register (UF0IC1)
This register controls clearing the interrupt sources indicated by the UF0IS1 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.
UF0IC1
5
E0
INDTC
3
SUCESC
2
STGC
1
PROTC
CPU
DECC
Address
FF4BH
After reset
FFH
0
4
E0ODTC
6
E0INC
7
1
Bit position
Bit name
Function
6
E0INC
This bit clears the EP0IN interrupt.
0: Clear
5
E0INDTC
This bit clears the EP0INDT interrupt.
0: Clear
4
E0ODTC
This bit clears the EP0OUTDT interrupt.
0: Clear
3
SUCESC
This bit clears the Success interrupt.
0: Clear
2
STGC
This bit clears the Stg interrupt.
0: Clear
1
PROTC
This bit clears the Protect interrupt.
0: Clear
0
CPUDECC
This bit clears the CPUDEC interrupt.
0: Clear
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