Atmel Evaluation Kit AT91SAM9G25-EK AT91SAM9G25-EK Data Sheet

537

SAM9G25 [DATASHEET]

11032C–ATARM–25-Jan-13

UDPHS_FNUM

0xF803C004

Read-only

Number of the received microframe (0 to 7) in one frame.This field is reset at the beginning of each new frame (1 ms).

One microframe is received each 125 microseconds (1 ms/8).

This field is provided in the last received SOF packet (see INT_SOF in the 

).

This bit is set by hardware when a corrupted Frame Number in Start of Frame packet (or Micro SOF) is received.

This bit and the INT_SOF (or MICRO_SOF) interrupt are updated at the same time.

31

30

29

28

27

26

25

24

FNUM_ERR

–

–

–

–

–

–

–

23

22

21

20

19

18

17

16

–

–

–

–

–

–

–

–

15

14

13

12

11

10

9

8

–

–

FRAME_NUMBER

7

6

5

4

3

2

1

0

FRAME_NUMBER

MICRO_FRAME_NUM