MC68HC908LD64 Datasheet, PDF (199/362 Pages) Freescale Semiconductor, Inc – Microcontrollers

Universal Serial Bus Module (USB)
Hub Function I/O Registers
TRANF — Bus Signal Transition Detect Flag
This read-only bit is set if there is any bus activity on the upstream or
the downstream data lines. Generally, this bit is used to wake up the
suspended hub when there is any bus activity occurred. Software
must clear this flag by writing a logic 1 to the TRANFR bit in the
SIETSR register. Reset clears this bit. Writing to TRANF has no
effect.
1 = Signal transition has been detected
0 = Signal transition has not been detected
SOFIE — Start Of Frame Interrupt Enable
This read/write bit enables the Start Of Frame to generate a USB
interrupt when the SOFF bit becomes set. Reset clears this bit.
1 = USB interrupt enabled for Start Of Frame
0 = USB interrupt disabled for Start Of Frame
EOF2IE — The Second End of Frame Point Interrupt Enable
This read/write bit enables the Second End Of Frame to generate a
USB interrupt when the EOF2F bit becomes set. Reset clears this bit.
1 = USB interrupt enabled for the Second End Of Frame Point
0 = USB interrupt disabled for the Second End Of Frame Point
EOPIE — End of Packet Detect Interrupt Enable
This read/write bit enables the End Of Frame to generate a USB
interrupt when the EOPF bit becomes set. Reset clears the bit.
1 = USB interrupt enabled for End-of-Packet sequence detection
0 = USB interrupt disabled for End-of-Packet sequence detection
TRANIE — Bus Signal Transition Detect Interrupt Enable
This read/write bit enables the bus signal transition to generate a USB
interrupt when the TRANF bit becomes set. Reset clears this bit.
1 = USB interrupt enabled for Bus Signal Transition
0 = USB interrupt disabled for Bus Signal Transition
MC68HC908LD64 — Rev. 3.0
Freescale Semiconductor
Universal Serial Bus Module (USB)
Data Sheet
199