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Intel
®
IXP42X Product Line of Network Processors and IXC1100 Control Plane Processor
September 2006 DM
Order Number: 252480-006US 537
Universal Serial Bus (USB) v1.1 Device Controller—Intel
®
IXP42X product line and IXC1100
control plane processors
18.5.45 UDC Data Register 15 (UDDR15)
Endpoint 15 is an interrupt IN endpoint that is 8 bytes deep. Data must be loaded via
direct Intel XScale
®
processor writes.
Because the USB system is a host-initiator model, the host must poll Endpoint 15 to
determine interrupt conditions. The UDC can not initiate the transaction.
§ §
Register Name: UDDR14
Hex Offset Address: 0 x C800BE00 Reset Hex Value: 0x00000000
Register
Description:
Universal Serial Bus Device Endpoint 14 Data Register
Access: Read
Bits
31 87 0
(Reserved) (8-Bit Data)
X 00000000
Resets (Above)
Register
UDDR14
Bits Name Description
31:8 Reserved for future use.
7:0 DATA Top of endpoint data currently being loaded.
Register Name: UDDR15
Hex Offset Address: 0 x C800B0E0 Reset Hex Value: 0x00000000
Register
Description:
Universal Serial Bus Device Endpoint 15 Data Register
Access: Write
Bits
31 87 0
(Reserved) (8-Bit Data)
X 00000000
Resets (Above)
Register
UDDR15
Bits Name Description
31:8 Reserved for future use.
7:0 DATA Top of endpoint data currently being loaded.