AN2294 Freescale Semiconductor / Motorola, AN2294 Datasheet - Page 16

• Manufacturer Part Number: AN2294
• Description: MC68SZ328 USB Configuration Setup Application Note
• Manufacturer: Freescale Semiconductor / Motorola

Software Interface
When the WFR bit is set, it tells the device that the next transaction that takes place is the last data word
(either 16 or 8 bit) for that particular transaction.
Even byte size packets:
16
1. For an N (N = even) byte packet, write the first N-2 bytes to the FIFO data register
2. Set the WFR bit in the USB_EPn_FCTRL register and then write the last data word (byte
(USB_EPn_FDAT). Data may be written as words.
N-1 and byte N) to the USB_EPn_FDAT register.
Freescale Semiconductor, Inc.
For More Information On This Product,
MC68SZ328 Application Note
Go to: www.freescale.com
MOTOROLA