MC68HC908BD48 Datasheet, PDF (176/290 Pages) Freescale Semiconductor, Inc – Microcontrollers

Universal Serial Bus Module (USB)
RSEQ — Received Data Sequence
This bit indicates the type of data packet of the last received data
packet on endpoint 0. RSEQ = 0 indicates the last received data
packet is type DATA0. RSEQ = 1 indicates the last received data
packet is type DATA1.
1 = Last token received on endpoint 0 is a DATA1 token
0 = Last token received on endpoint 0 is a DATA0 token
SETUP — SETUP Token
This bit is set when the received token packet for endpoint 0 is a
SETUP token (PID = b1101).
1 = Last token received on endpoint 0 is a SETUP token
0 = Last token received on endpoint 0 is not a SETUP token
TX1ST — Transmit First Flag
This bit is set if the endpoint 0 transmit buffer empty flag (TBEF) is set
when the control logic is setting the endpoint 0 receive buffer full flag
(RBFF). This happens when TBEF is still set at the end of an
endpoint 0 reception.
1 = IN transaction occurred before SETUP or OUT
0 = IN transaction occurred after SETUP or OUT
RPSIZ[3:0] — Received Data Size
The RPSIZ[3:0] indicates the number of received data bytes in a data
packet. Reset will not affect these bits
Technical Data
176
Universal Serial Bus Module (USB)
MC68HC908BD48 — Rev. 1.0
MOTOROLA