Fujitsu MB90335 Series Hardware Manual page 222

MB90335 Series
Note:
If the USTP bit is not used in the stop mode, wait for 3 cycles or 43 cycles to elapse in FULL speed
or in LOW speed (that is supported only in HOST mode) so that you can ensure that the reset
operation will function when you have set RST=1. You may clear the USTP bit and the RST bit at
once.
[bit3, bit2] Reserved bits
It is reserved bit. Please write "0". The bit always reads "0".
[bit1] RFBK: Data toggle mode selection bit (rate feedback mode)
It is a bit that selects data toggle mode for USB Interrupt transfer.
RFBK
0
1
The data toggle mode selection can be used for rate feedback information in ISO transfer.
[bit0] PWC: Power supply control bit
It specifies the operating power supply mode (self power or bus power) for the USB Function.
(The setting of the PWC bit is reflected in the standard command GetStatus.)
PWC
0
1
CM44-10137-6E
Selection of alternation data toggle mode
It toggles a data PID when a transfer has been successfully completed.
Selection of data toggle mode
It is a toggle the data PID in unconditional.
FUJITSU MICROELECTRONICS LIMITED
CHAPTER 11 USB FUNCTION
11.3 Registers of USB Function
Operating mode
Operating mode
Bus power
Self power
201