CHAPTER 12 USB FUNCTION CONTROLLER (USBF)
Preliminary User’s Manual U19014EJ1V0UD
289
(6) UF0 CLR request register (UF0CLR)
This register indicates the target of the received CLEAR_FEATURE request.
This register is read-only, in 8-bit units.
This register is meaningful only when an interrupt request is generated. Each bit is set to 1 after completion of
the status stage, and automatically cleared to 0 when this register is read.
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.
0
UF0CLR
0
5
0
0
3
CLREP2
2
CLREP1
1
CLREP0 CLRDEV
Address
FF65H
After reset
00H
0
4
6
7
Bit position
Bit name
Function
3 to 1
CLREPn
These bits indicate that a CLEAR_FEATURE Endpoint n request is received and
automatically processed.
1: Automatically processed
0: Not automatically processed (default value)
0
CLRDEV
This bit indicates that a CLEAR_FEATURE Device request is received and automatically
processed.
1: Automatically processed
0: Not automatically processed (default value)
Remark
n = 2 to 0
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