UPD720102 Просмотр технического описания (PDF) - NEC => Renesas Technology

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Компоненты Описание

производитель

UPD720102

USB 2.0 HOST CONTROLLER

NEC => Renesas Technology 

μPD720102

Figure 3–1. Differential Input Sensitivity Range for Low-/full-speed

Differential Input Voltage Range

Differential Output

Crossover

Voltage Range

−1.0

0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2

4.6

Input Voltage Range (V)

Figure 3–2. Receiver Sensitivity for Transceiver at DP/DM

Level 1

+400 mV

Differential

Point 3

Point 1

Point 5

Point 4

Point 2

Point 6

0V

Differential

Level 2

−400 mV

Differential

0%

Unit Interval

100%

USB

Connector

Nearest

Device

Vbus

D+

D−

Gnd

Figure 3–3. Receiver Measurement Fixtures

Test Supply Voltage

15.8 Ω

15.8 Ω

50 Ω

Coax

50 Ω

Coax

+

To 50 Ω Inputs of a

High Speed Differential

Oscilloscope, or 50 Ω

Outputs of a High Speed

Differential Data Generator

−

143 Ω

143 Ω

20

Data Sheet S17998EJ4V0DS

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