SAM3X8C Atmel Corporation, SAM3X8C Datasheet - Page 1173

• Manufacturer Part Number: SAM3X8C
• Manufacturer: Atmel Corporation

39.6.3.8
Name:
Address:
Access:
• FLENHIGH: Frame Length
In High speed mode, this field contains the 8 high-order bits of the 16-bit internal frame counter (at 30MHz, counter length
is 3750 to ensure a SOF generation every 125 us).
• FNUM: Frame Number
This field contains the current SOF number.
This field can be written. In this case, the MFNUM field is reset to zero.
• MFNUM: Micro Frame Number
This field contains the current Micro Frame number (can vary from 0 to 7) updated every 125us.
When operating in full-speed mode, this field is tied to zero.
11057A–ATARM–17-Feb-12
11057A–ATARM–17-Feb-12
31
23
15
–
–
7
Host Frame Number Register
UOTGHS_HSTFNUM
0x400AC420
Read-write
30
22
14
–
–
6
FNUM
29
21
13
–
5
28
20
12
–
4
FLENHIGH
27
19
11
–
3
FNUM
26
18
10
–
2
MFNUM
25
17
–
9
1
SAM3X/A
SAM3X/A
24
16
–
8
0
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