Design Guide 203
Schematic Checklist
USB
USBRBIAS • Required 18.2 Ω ± 1% pull-down.
USBP[5:0]P
USBP[5:0]N
• No external resistors are required. • Integrated 15 k
Ω pull-down,
effective output driver
impedance of 45
Ω provided.
OC[5:0]# • If not used, use 10 k
Ω ± 5% pull-up to
VCCSUS3.3.
• Inputs must not float.
NOTES:
1. LINT1 and LINT0 map to INTR and NMI in the ICH3-S.
2. LAN Connect Interface Signals can be left as NC if not used because the Input buffers are internally
terminated.
Table 13-3. Intel
®
ICH3-S Schematic Checklist (Sheet 8 of 8)
Checklist Items Recommendations Comments
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