SH7760 Datasheet, PDF (788/1345 Pages) Renesas Technology Corp – SuperHTM RISC engine

Bit: 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
Initial value: 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
R/W: R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
Bit: 15 14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
FN
Initial value: 0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
R/W: R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
Bit
Bit Name Initial Value R/W Description
31 to 16 
All 0
R Reserved
These bits are always read as 0.
15 to 0 FN
All 0
R Frame Number
This is incremented when HcFmRemaining is re-
loaded. It will be rolled over to H′0 after H′FFFF.
When HC enters the USB operational state, this will
be automatically incremented. HC increments the FN
at each frame boundary and sends a SOF. Then HC
writes the FN contents to HCCA before reading the
first ED in that Frame. After writing to HCCA, the HC
sets HcInterruptStatus.SF = 1.
21.3.17 Periodic Start Register (HcPeriodicStart)
HcPeriodicStart indicates the earliest time when HC should start to process the periodic list.
Bit: 31
-
Initial value: 0
R/W: R
Bit: 15
-
Initial value: 0
R/W: R
30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
R
R
R
R
R
R
R
R
R
R
R
R
R
R
R
14 13 12 11 10 9
8
7
6
5
4
3
2
1
0
-
PS
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
R R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W
Rev. 1.0, 02/03, page 738 of 1294