PRIXP420ABB 885158 Intel, PRIXP420ABB 885158 Datasheet - Page 89

• Manufacturer Part Number: PRIXP420ABB 885158
• Manufacturer: Intel

Specifications of PRIXP420ABB 885158

• Lead Free Status / Rohs Status: Compliant

Design Checklist—Intel
Table 31.
A.9
Table 32.
A.10
Table 33.
A.10.1
Figure 33.
December 2007
Document Number: 252817-008US
UART Interfaces (Sheet 2 of 2)
USB Interface
USB Interface
Oscillator Interface
Oscillator Interface
Oscillator Interface
Typical Connection to an Oscillator
CTS1_N
RTS1_N
†
††
USB_DPOS
USB_DNEG
†
OSC_IN
OSC_OUT
†
Name
Name
Name
®
IXP42X product line and IXC1100 control plane processors
For a legend of the
For new designs, this signal should be pulled high with a 10-KΩ resistor when not being utilized in the
system. No change is required to existing designs that have this signal pulled low.
For a legend of the
For a legend of the
Type
O
I
Type
Type
†
I/O
I/O
O
I
Intel
Should be pulled high through a 10-KΩ resistor when not being utilized
in the system.
No external circuitry needed.
†
†
Oscillator
®
Type
Type
Type
N/C when not being utilized in the system.
N/C when not being utilized in the system.
33.33-MHz, sinusoidal input signal. Must be 50 ppm or better to
ensure all interfaces meet specification requirements. Can be
driven by an oscillator. For Spread Spectrum Clocking information,
see Intel
Control Plane Processor: Spread-Spectrum Clocking to Reduce EMI
33.33-MHz, sinusoidal output signal. Left disconnected when being
driven by an oscillator. See
IXP42X Product Line of Network Processors and IXC1100 Control Plane Processor
codes, see
codes, see
codes, see
®
IXP42X Product Line of Network Processors and IXC1100
Table 21 on page
Table 21 on page
Table 21 on page
Recommendation
Recommendation
Recommendation
Intel
Intel
Processor
OSC_IN
OSC_OUT
Figure
®
®
IXP42X Product Line /
IXC1100 Control Plane
33.
81.
81.
81.
B1678-03
Hardware Design Guidelines
Complete?
Complete?
Complete?
89