cs5535 National Semiconductor Corporation, cs5535 Datasheet - Page 285

• Manufacturer Part Number: cs5535
• Description: Geode Cs5535 Companion Multi-function South Bridge
• Manufacturer: National Semiconductor Corporation

Revision 0.8
USB Register Descriptions
5.5.4.13
USB Memory Offset
Type
Reset Value
5.5.4.14
USB Memory Offset
Type
Reset Value
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10
30:16
15:14
31:4
13:0
Bit
3:0
Bit
31
Host Controller Current Done List Head ED (USBC_HcDoneHead)
Host Controller Frame Interval (USBC_HcFmInterval)
Name
DoneHead
RSVD
Name
FrameInterval
Toggle
FSLargest
DataPacket
RSVD
FrameInterval
HCD:
HC:
HCD:
HC:
30h
RO
R/W
00000000h
34h
R/W
RO
00002EDFh
FSLargestDataPacket
HCD
HCD
R/W
R/W
R/W
R/W
RO
RO
USBC_HcDoneHead Bit Descriptions
(Continued)
USB_HcFmInterval Bit Descriptions
USBC_HcDoneHead Register Map
USBC_HcFmInterval Register Map
R/W
R/W
HC
HC
RO
RO
RO
RO
DoneHead
Description
Done Head. Pointer to the current Done List Head ED.
Reserved. Read/write 0s.
Description
Frame Interval Toggle This bit is toggled by HCD when it loads
a new value into FrameInterval.
FS Largest Data Packet. This field specifies a value that is
loaded into the Largest Data Packet Counter at the beginning of
each frame.
Reserved. Read/write 0s.
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.
285
RSVD
9
9
8
8
FrameInterval
7
7
6
6
5
5
4
4
3
3
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RSVD
2
2
1
1
0
0