MC68HC908LD64 Datasheet, PDF (201/362 Pages) Freescale Semiconductor, Inc – Microcontrollers

Universal Serial Bus Module (USB)
Hub Function I/O Registers
SOFFR — Start Of Frame Flag Reset
Writing a logic 1 to this write-only bit will clear the SOFF bit if it is set.
Reset clears this bit.
1 = Write 1 to clear the SOFF bit
0 = No effect
EOF2FR — The Second End of Frame Point Flag Reset
Writing a logic 1 to this write-only bit will clear the EOF2F bit if it is set.
Reset clears this bit.
1 = Write 1 to clear the EOF2F bit
0 = No effect
EOPFR — End of Packet Flag Reset
Writing a logic 1 to this write-only bit will clear the EOPF bit if it is set.
Reset clears this bit.
1 = Write 1 to clear the EOPF bit
0 = No effect
TRANFR — Bus Signal Transition Flag Reset
Writing a logic 1 to this write-only bit will clear the TRANF bit if it is set.
Reset clears this bit.
1 = Write 1 to clear TRANF bit
0 = No effect
MC68HC908LD64 — Rev. 3.0
Freescale Semiconductor
Universal Serial Bus Module (USB)
Data Sheet
201