Udc Frame Number High Register; Udc Frame Number Msb (Fnmsb) - Intel IXP45X Developer's Manual

Register Name:
0 x C800B05C
Hex Offset Address:
Register
Universal Serial Bus Device Controller Interrupt Status Register 1
Description:
Access: Read/Write and Read-Only
31
Bits
31:8
7
6
5
4
3
2
1
0
8.5.22

UDC Frame Number High Register

The UDC Frame Number High Register holds the three most-significant bits of the
frame number contained in the last received SOF packet, the isochronous OUT endpoint
error status, and the SOF interrupt status/interrupt mask bit.
8.5.22.1

UDC Frame Number MSB (FNMSB)

The UFNHR[FNMSB] is the three most-significant bits of the 11-bit frame number
contained in the last received SOF packet. The remaining bits are located in the UFNLR.
This information is used for isochronous transfers.
These bits are updated every SOF.
® ®
Intel IXP45X and Intel IXP46X Product Line of Network Processors
Developer's Manual
334
® ®
Intel IXP45X and Intel
(Reserved)
X
Resets (Above)
Register
Name
Reserved for future use.
Interrupt Request Endpoint 15 (read/write 1 to clear).
IR15
1 = Endpoint 15 needs service.
Interrupt Request Endpoint 14 (read/write 1 to clear).
IR14
1 = Endpoint 14 needs service.
Interrupt Request Endpoint 13 (read/write 1 to clear).
IR13
1= Endpoint 13 needs service.
Interrupt Request Endpoint 12 (read/write 1 to clear).
IR12
1 = Endpoint 12 needs service.
Interrupt Request Endpoint 11 (read/write 1 to clear).
IR11
1 = Endpoint 11 needs service.
Interrupt Request Endpoint 10 (read/write 1 to clear).
IR10
1 = Endpoint 10 needs service.
Interrupt Request Endpoint 9 (read/write 1 to clear).
IR9
1 = Endpoint 9 needs service.
Interrupt Request Endpoint 8 (read/write 1 to clear).
IR8
1 = Endpoint 8 needs service.
IXP46X Product Line of Network Processors—USB 1.1 Device
USIR1
0x00000000
Reset Hex Value:
Bits
USIR1
Description
Controller
8 7 6 5 4 3 2 1
0 0 0 0 0 0 0
(UFNHR)
August 2006
Order Number: 306262-004US
0
0