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USB host block registers
748
NS9750 Hardware Reference
HcFmRemaining register
Address: 9010 1038
The HcFmRemaining register is a 14-bit down counter showing the bit time remaining
in the current frame.
D13:00 R/W FI 2EDFh FrameInterval
Specifies the interval between two consecutive SOFs in
bit times. The nominal value is 11,999. The host controller
driver should store the current value of this field before
resetting the host controller using the HostControllerReset
field in the HcCommandStatus register (see
"HcCommandStatus register," beginning on page 730), as
this causes the host controller to reset this field to its
nominal value. The host controller driver optionally can
restore the stored value when the reset sequence
completes.
Bits Access Mnemonic Reset Description
Table 436: HcFmInterval register
13121110987654321015 14
31 29 28 27 26 25 24 23 22 21 20 19 18 17 1630
Reserved FrameRemainingCounter (FR)
Reserved
FRT