Hcfmremaining register, Table 436: hcfminterval register – Digi NS9750 User Manual
Page 772
U S B h o s t b l o c k r e g i s t e r s
7 4 8
N S 9 7 5 0 H a r d w a r e R e f e r e n c e
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
13
12
11
10
9
8
7
6
5
4
3
2
1
0
15
14
31
29
28
27
26
25
24
23
22
21
20
19
18
17
16
30
Reserved
FrameRemainingCounter (FR)
Reserved
FRT