Instrukcja obsługi Microchip EVB-USB3740

Microchip nieskategoryzowany EVB-USB3740

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SMSC USB3740 EVB USER MANUAL Revision 1.1 (12-07-12)
Copyright © 2012 SMSC or its subsidiaries. All rights reserved.
Circuit diagrams and other information relating to SMSC products are included as a means of illustrating typical applications. Consequently, complete information
sufficient for construction purposes is not necessarily given. Although the information has been checked and is believed to be accurate, no responsibility is assumed
for inaccuracies. SMSC reserves the right to make changes to specifications and product descriptions at any time without notice. Contact your local SMSC sales office
to obtain the latest specifications before placing your product order. The provision of this information does not convey to the purchaser of the described semiconductor
devices any licenses under any patent rights or other intellectual property rights of SMSC or others. All sales are expressly conditional on your agreement to the terms
and conditions of the most recently dated version of SMSC's standard Terms of Sale Agreement dated before the date of your order (the "Terms of Sale Agreement").
The product may contain design defects or errors known as anomalies which may cause the product's functions to deviate from published specifications. Anomaly
sheets are available upon request. SMSC products are not designed, intended, authorized or warranted for use in any life support or other application where product
failure could cause or contribute to personal injury or severe property damage. Any and all such uses without prior written approval of an Officer of SMSC and further
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USB3740 Evaluation Board User Manual
USB3740 Evaluation Board User Manual
SMSC USB3740 EVB 2 Revision 1.1 (12-07-12)
USER MANUAL
1 Introduction
The USB3740 EVB demonstrates the capabilities of the USB3740. The board consists of the upstream
and downstream ports, manual switches to control the OE_N and S pins, and a second USB3740 that
can be evaluated with SMA connectors instead of USB (SMA connectors not installed).
2 Hardware
2.1 USB Ports
The USB ports are mounted on the edges of the USB3740 EVB. The downstream ports use the
standard USB Type A receptacle. The label for the port is located next to the receptacle. The upstream
port can be a standard USB Type B, mini-B or micro-B receptacle, the default connector is a USB mini-
B connector.
2.2 Test Points and Resistors
The USB3740 EVB provides access to the OE_N, S, VDD and GND pins. TP2 connects to GND, TP1
connects to the VDD pin. R1 (On the back of the PCB) connects the upstream VBUS to the VDD of
the USB3740. R2 and R3 connect the upstream VBUS to the VBUS pins of the dowstream ports. SW1
and SW2 control the operation of the switch. SW1 controls the Output Enable (OE_N) pin. To enable
the switch, OE_N should be set to 0. SW2 selects which downstream port is connected to the upstream
port.
Figure 2.1 Upstream and Downstream Ports
Upstream
Downstream1 Downstream2
USB3740 Evaluation Board User Manual
SMSC USB3740 EVB 3 Revision 1.1 (12-07-12)
USER MANUAL
2.3 SMA Evaluation (Not Installed)
The USB3740 EVB also contains a section to evaluate the USB3740 without the standard USB
connectors. Because the switch can be used in many different applications, a second USB3740 is
placed on the board with the pins routed out to right angle SMA connectors. The connectors are not
populated by default. R5 is used to supply VDD to the second USB3740.
Figure 2.2 Test points, Resistors and Switches
Figure 2.3 USB3740 EVB with the SMAs populated
TP2
TP2 SW1 SW2
R3
R2
R5

Specyfikacje produktu

Marka: Microchip
Kategoria: nieskategoryzowany
Model: EVB-USB3740

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