MC68HC908LD64 Datasheet, PDF (213/362 Pages) Freescale Semiconductor, Inc – Microcontrollers

Universal Serial Bus Module (USB)
Embedded Device Function I/O Registers
TXD1FR — Embedded Device Endpoint 1/2 Transmit Flag Reset
Writing a logic 1 to this write-only bit will clear the TXD1F bit if it is set.
Reset clears this bit.
1 = Write 1 to clear TXD1F
0 = No effect
14.7.4 USB Embedded Device Control Register 0 (DCR0)
Address: $004B
Bit 7
6
5
4
3
2
1
Bit 0
Read:
T0SEQ DSTALL0 TX0E
Write:
RX0E TP0SIZ3 TP0SIZ2 TP0SIZ1 TP0SIZ0
Reset: 0
0
0
0
0
0
0
0
Figure 14-16. USB Embedded Device Control Register 0 (DCR0)
T0SEQ — Embedded Device Endpoint 0 Transmit Sequence Bit
This read/write bit determines which type of data packet (DATA0 or
DATA1) will be sent during the next IN transaction directed at
endpoint 0. Toggling of this bit must be controlled by software. Reset
clears this bit.
1 = DATA1 token active for next embedded device endpoint 0
transmit
0 = DATA0 token active for next embedded device endpoint 0
transmit
DSTALL0 — Embedded Device Endpoint 0 Force Stall Bit
This read/write bit causes embedded device endpoint 0 to return a
STALL handshake when polled by either an IN or OUT token by the
host. The USB hardware clears this bit when a SETUP token is
received. Reset clears this bit.
1 = Send STALL handshake
0 = Default
MC68HC908LD64 — Rev. 3.0
Freescale Semiconductor
Universal Serial Bus Module (USB)
Data Sheet
213