252479-007US Datasheet, PDF (90/128 Pages) Intel Corporation – Intel IXP42X Product Line of Network Processors and IXC1100 Control Plane Processor

Intel^® IXP42X product line and IXC1100 control plane processors—Datasheet
5.5.2.2
5.5.2.3
USB Interface
For timing parameters, see the USB 1.1 specification. The IXP42X product line and
IXC1100 control plane processors’ USB 1.1 interface is a device or function controller
only. The IXP42X product line and IXC1100 control plane processors’ USB v 1.1
interface cannot be line-powered.
UTOPIA Level 2 (33 MHz)
Figure 17. UTOPIA Level 2 Input Timings
Clock
Signals
Tsetup
Thold
Table 48.
UTOPIA Level 2 Input Timings Values
Symbol
Parameter
T_setup
T_hold
Input setup prior to rising edge of clock. Inputs
included in this timing are UTP_IP_DATA[7:0],
UTP_IP_SOC, AND UTP_IP_FCI, and
UTP_OP_FCI.
Input hold time after the rising edge of the
clock. Inputs included in this timing are
UTP_IP_DATA[7:0], UTP_IP_SOC, and
UTP_IP_FCI, and UTP_OP_FCI.
Figure 18. UTOPIA Level 2 Output Timings
Min.
8
1
Clock
A9578-01
Max.
Units Notes
ns
ns
Signals
Tclk2out
Tholdout
A9579-01
Intel^® IXP42X Product Line of Network Processors and IXC1100 Control Plane Processor
Datasheet
90
June 2007
Document Number: 252479-007US