Intel IXP42X 用户手册
Intel
®
IXP42X Product Line of Network Processors and IXC1100 Control Plane Processor
September 2006
DM
Order Number: 252480-006US
533
Universal Serial Bus (USB) v1.1 Device Controller—Intel
®
IXP42X product line and IXC1100
control plane processors
18.5.38
UDC Data Register 8 (UDDR8)
Endpoint 8 is a double-buffered, isochronous IN endpoint that is 256 bytes deep. Data
can be loaded via direct Intel XScale
®
processor writes.
Because it-is double buffered, up to two packets of data may be loaded for
transmission.
18.5.39
UDC Data Register 9 (UDDR9)
Endpoint 9 is a double-buffered, isochronous OUT endpoint that is 256 bytes deep. The
UDC generates an interrupt request when the EOP is received.
Register Name:
UDDR7
Hex Offset Address:
0 x C800B680
Reset Hex Value:
0x00000000
Register
Description:
Universal Serial Bus Device Endpoint 7 Data Register
Access: Read
Bits
31
8
7
0
(Reserved)
(8-Bit Data)
X
0
0
0
0
0
0
0
0
Resets (Above)
Register
UDDR7
Bits
Name
Description
31:8
Reserved for future use.
7:0
DATA
Top of endpoint data currently being read.
Register Name:
UDDR8
Hex Offset Address:
0 x C800B700
Reset Hex Value:
0x00000000
Register
Description:
Universal Serial Bus Device Endpoint 8 Data Register
Access: Write
Bits
31
8
7
0
(Reserved)
(8-Bit Data)
X
0
0
0
0
0
0
0
0
Resets (Above)
Register
UDDR8
Bits
Name
Description
31:8
Reserved for future use.
7:0
DATA
Top of endpoint data currently being loaded.