NEC mPD78F0730, Preliminary User'S Manual

Page: 300 / 518

CHAPTER 12 USB FUNCTION CONTROLLER (USBF)
Preliminary User’s Manual U19014EJ1V0UD
300
(15) UF0 INT status 4 register (UF0IS4)
This register indicates the interrupt source. If the contents of this register are changed, the INTUSB2B signal
becomes active.
This register is read-only, in 8-bit units.
If an interrupt request (INTUSB2B) is generated from USBF, the FW must read this register to identify the
interrupt source.
Each bit of this register is forcibly cleared to 0 when 0 is written to the corresponding bit of the UF0IC4 register.
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 UF0IS4 0
5
SETINT 0
3
0
2
0
1
0 0
Address
FF2BH
After reset
00H
0 4 6 7
Bit position Bit name Function
5 SETINT This bit indicates that the SET_INTERFACE request has been received and
automatically processed.
1: The request has been automatically processed (interrupt request is generated).
0: The request has not been automatically processed (default value).
The current setting of this bit can be identified by reading the UF0ASS or UF0IFn
register (n = 0 to 4).
Downloaded from Elcodis.com electronic components distributor