Rainbow Electronics W90N745CDG - Manual (Page 187)

W90N745CD/W90N745CDG
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BITS DESCRIPTION
31 FINTVT
FrameIntervalToggle
This bit is toggled by HCD when it loads a new value into Frame Interval.
[30:16] FSLDP
FSLargestDataPacket
This field specifies a value that is loaded into the Largest Data Packet
Counter at the beginning of each frame.
[15:14] Reserved Reserved. Read/Write 0's
[13:0] FINTV
Frame Interval
This field specifies the length of a frame as (bit times - 1). For 12,000 bit
times in a frame, a value of 11,999 is stored here.
Host Controller Frame Remaining Register
REGISTER ADDRESS R/W DESCRIPTION RESET VALUE
HcFmInterval 0xFFF0_5038 R Host Controller Frame Remaining Register 0x0000_0000
31 30 29 28 27 26 25 24
FRMT Reserved
23 22 21 20 19 18 17 16
Reserved
15 14 13 12 11 10 9 8
Reserved FRM
7 6 5 4 3 2 1 0
FRM
BITS DESCRIPTION
[31] FRMT
FrameRemainingToggle
Loaded with FrameIntervalToggle when Frame Remaining is loaded.
[30:14] Reserved Reserved. Read/Write 0's
[13:0] FRM
Frame Remaining
When the Host Controller is in the U SB O PERATIONAL state, this 14-bit field
decrements each 12 MHz clock period. When the count reaches 0, (end of
frame) the counter reloads with Frame Interval. In addition, the counter
loads when the Host Controller transitions into U
SB O PERATIONAL .