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UPD720101F1-EA8 Datasheet(PDF) 10 Page - NEC |
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UPD720101F1-EA8 Datasheet(HTML) 10 Page - NEC |
10 / 36 page Data Sheet S16265EJ4V0DS 10 µPD720101 2. HOW TO CONNECT TO EXTERNAL ELEMENTS 2.1 Handling Unused Pins To realize less than 5 ports host controller implementation, appropriate value shall be set to Port No field in EXT1 register. And unused pins shall be connected as shown below. Pin Direction Connection Method DPx I/O Tied to "low". DMx I/O Tied to "low". RSDPx O No connection (Open) RSDMx O No connection (Open) OCIx I “H” clamp PPONx O No connection (Open) 2.2 USB Port Connection Figure 2-1. USB Downstream Port Connection Inside-package DP DM RSDP RSDM RS = 36 Ω ± 1% 15 k Ω ± 5% Port: D+ Outside-package Port: D- RS + Ron (resistance for driver which is active) = 45 Ω ± 10% ground RS = 36 Ω ± 1% |
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