ISL54205BEVAL1Z Intersil, ISL54205BEVAL1Z Datasheet

ISL54205BEVAL1Z

Manufacturer Part Number

ISL54205BEVAL1Z

Description

EVALUATION BOARD FOR ISL54205B

Manufacturer

Intersil

Datasheets

1.ISL54205BIRTZ.pdf (16 pages)

2.ISL54205BEVAL1Z.pdf (4 pages)

Specifications of ISL54205BEVAL1Z

Main Purpose

Interface, Analog & Digital Switch

Embedded

Utilized Ic / Part

ISL54205

Primary Attributes

2 x SPDT Audio & USB Switch

Secondary Attributes

2.7 V ~ 3.6 V Supply

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

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Description

The ISL54205BEVAL1Z evaluation board is designed to

provide a quick and easy method for evaluating the

ISL54205B USB/Audio Switch IC.

The ISL54205B device is a unique IC. To use this evaluation

board properly requires a thorough knowledge of the

operation of the IC. Refer to the ISL54205B data sheet for an

understanding of the functions and features of the device.

Studying the device’s truth table along with its pinout

diagram on page 2 of the ISL54205B data sheet is the best

way to get a quick understanding of how the part works.

A picture of the main evaluation board is shown in Figure 1.

The ISL54205B µTQFN IC is soldered onto the evaluation

board. It is located in the center of the board and is

designated as U1.

The ISL54205B IC has two modes of operation called Audio

mode and USB mode. The evaluation board contains

standard Audio and USB connectors to allow the user to

easily interface with the IC to evaluate its functions, features,

and performance in the two modes of operation. For

example, when the board is properly powered, a headphone

can be plugged into the headphone jack (J7) and a stereo

source, such as an MP3 player, can be connected at the

RCA connectors J3 (AUDIO LEFT) and J4 (AUDIO RIGHT)

to play music through the audio switches of the IC (see

Figure 2). You can then turn-off the audio source, remove

the headphones, and attach a USB cable from a computer to

the USB connector J1 (USB TO HOST). This will establish a

connection from the computer through the USB switches of

the IC to the USB device connected at the USB connector J2

(USB TO DEVICE), to send and receive data.

This application note will guide the user through the process

of configuring and using the evaluation board to evaluate the

ISL54205B device in both the Audio mode and the USB

mode.

Features

• Standard USB Connectors

• RCA Audio Input Jacks and Headphone Speaker Jack

• Convenient Test Points and Connections for Test

Equipment

Application Note

1-888-INTERSIL or 1-888-468-3774

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

Evaluation Board User’s Manual

Board Architecture/Layout

Basic Layout of Evaluation Board

The basic layout of the main board is as follows: Refer to

Figure 1.

Power and Ground connections are at the top of the board

(J10 and J11).

Audio Source Inputs are at the lower right side of the board

(J3, J4, J5 and J6). Audio outputs are at the lower left side of

the board (J7, J8, J9). Connector J7 is a standard

headphone jack for connecting a 32Ω headphone.

USB connection to an upstream host controller (Computer)

is made at connector J1, located on left underside of the

board. USB connection to a downstream USB device is

made at connector J2, located on right underside of the

board.

Located in the center of the board is the ISL54205B IC (U1).

The evaluation board has a pin 1 dot, to show how the IC

should be oriented on to the evaluation board. The IC pin 1

indicator dot needs to be aligned with the evaluation board

pin 1 dot indicator.

Power Supply

The DC power supply connected at banana jacks J10 (VDD)

and J11 (GND) provides power to the part. The IC requires a

2.7V to 3.6V DC power supply for proper operation. The power

supply should be capable of delivering 100µ

FIGURE 1. ISL54205BEVAL1Z EVALUATION BOARD

All other trademarks mentioned are the property of their respective owners.

July 1, 2009

Intersil (and design) is a registered trademark of Intersil Americas Inc.

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ISL54205BEVAL1Z

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AN1483.0

Related parts for ISL54205BEVAL1Z

ISL54205BEVAL1Z Summary of contents

Page 1

... Application Note Description The ISL54205BEVAL1Z evaluation board is designed to provide a quick and easy method for evaluating the ISL54205B USB/Audio Switch IC. The ISL54205B device is a unique IC. To use this evaluation board properly requires a thorough knowledge of the operation of the IC. Refer to the ISL54205B data sheet for an understanding of the functions and features of the device. Studying the device’ ...

Page 2

Logic Control The state of the ISL54205B device is determined by the voltage at the VBUS pin and the CTRL pin. Access to the CTRL pin is through the banana jack J12 (CTRL) and access to the VBUS pin is ...

Page 3

The BNC connector J14 (D parallel with the D- line of the J2 USB connector. The BNC connector J15 (D parallel with the D+ line of the J2 USB connector. If you want to use the ...

Page 4

... USB signal. Removal of these resistors disconnects the headphone jack (J7) and BNC connectors (J8, J9, J14, J15) from the USB differential lines. These components when connected will degrade the USB signal and will not ISL54205BEVAL1Z Board Schematic J10 TP1 VBUS 1 ...

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