Port0:0Eeh-0Efh / Port1:N/A D_Framenumber_H,L; (Device Framenumber High, Low) - Epson S2R72V18 Technical Manual

3. Register Details
3.2.39 Port0:0EEh-0EFh / Port1:N/A D_FrameNumber_H,L (Device FrameNumber High, Low)
Base Address: Port0=000h, Port1=200h
Mode Ofst Adrs Register Name
Device 0EEh-0EFh D_FrameNumber
This indicates the USB frame number updated each time an SOF token is received.
Bit15 FnInvalid
This bit is set to "1" if an error occurs in the SOF packet received.
Bit14-11 Reserved
Bit10-0 FrameNumber[10:0]
This indicates FrameNumber for the SOF packet received.
302
R/W Bit Symbol
R 15: FnInvalid
_H,L 14:
13:
12:
11:
10: FrameNumber [10]
9: FrameNumber [9]
8: FrameNumber [8]
7: FrameNumber [7]
6: FrameNumber [6]
R
5: FrameNumber [5]
4: FrameNumber [4]
3: FrameNumber [3]
2: FrameNumber [2]
1: FrameNumber [1]
0: FrameNumber [0]
0: Frame number is valid
0:
0:
0:
0:
Frame Number
EPSON
S2R72V18 Technical Manual (Rev.1.00)
Description
1: Frame number is not valid
1:
1:
1:
1:
Reset
8000h