mc68hc908ld64 Freescale Semiconductor, Inc, mc68hc908ld64 Datasheet - Page 218

• Manufacturer Part Number: mc68hc908ld64
• Description: M68hc08 Microcontrollers Microcontroller
• Manufacturer: Freescale Semiconductor, Inc

Universal Serial Bus Module (USB)
Data Sheet
218
DTX1ST — Embedded Device Transmit First Flag
DTX1STR — Clear Transmit First Flag
RP0SIZ[3:0] — Embedded Device Endpoint 0 Receive Data Packet Size
This read-only bit is set if the embedded device endpoint 0 data
transmit flag (TXD0F) is set when the USB control logic is setting the
embedded device endpoint 0 data receive flag (RXD0F). That is,
TXD0F is still set at the end of an endpoint 0 reception. This bit allows
the software to know that the endpoint 0 transmission happened
before the endpoint 0 reception. Reset clears this bit.
Writing a logic 1 to this write-only bit will clear the DTX1ST bit if it is
set. Reset clears this bit.
These read-only bits store the number of data bytes received for the
last OUT or SETUP transaction for embedded device endpoint 0.
These bits are not affected by reset.
1 = IN transaction occurred before SETUP/OUT
0 = IN transaction occurred after SETUP/OUT
1 = Write 1 to clear DTX1ST bit
0 = No effect
Universal Serial Bus Module (USB)
MC68HC908LD64
Freescale Semiconductor
—
Rev. 3.0