ISL54208EVAL1Z Intersil, ISL54208EVAL1Z Datasheet
ISL54208EVAL1Z
Manufacturer Part Number
ISL54208EVAL1Z
Description
EVALUATION BOARD FOR ISL54208
Manufacturer
Intersil
Specifications of ISL54208EVAL1Z
Main Purpose
Interface, Analog & Digital Switch
Embedded
No
Utilized Ic / Part
ISL54208
Primary Attributes
2 x SPDT Audio, USB & Video Switch
Secondary Attributes
1.8 V ~ 5.5 V Supply
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Description
The ISL54208EVAL1Z evaluation board is designed to
provide a quick and easy method for evaluating the
ISL54208 USB/CVBS/Audio IC.
The ISL54208 device is an unique IC. To use this evaluation
board properly, requires a thorough knowledge of the
operation of the IC. Refer to the ISL54208 datasheet 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 ISL54208 datasheet, 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 ISL54208
board. It is located in the center of the board and is
designated as U1.
The ISL54208 IC is a dual SPDT analog switch that has two
modes of operation: Audio/Video mode and USB mode. The
evaluation board contains standard RCA, BNC, and USB
connectors to allow the user to easily interface with the IC to
evaluate its functions, features, and performance in these
two modes of operation.
For example, when the board is properly powered, the
video/mono audio outputs of a video MP3 player can be
connected at RCA connectors J13 (VIDEO IN) and J15
(MONO AUDIO IN) and the USB output of the player can be
connected at the USB connector J12 (USB TO DEVICE) on
the board. See Figure 2 on page 4. A TV can be connected
at RCA jacks J5 (VIDEO OUT) and J7 (MONO AUDIO OUT)
to play the video on the TV. You can then turn-off the video,
disconnected the TV, and attach a USB cable from a
computer to USB connector J4 (USB TO HOST) to load
digital video tracks into the player.
This application note will guide the user through the process
of configuring and using the evaluation board to evaluate the
ISL54208 device in both the Audio/Video mode and the USB
mode.
Key Features
• Standard USB Connectors
• RCA Audio/Video Input Jacks and BNC Connectors
• Convenient Test Points and Connections for Test
• V
Equipment
BUS
from USB Host Logic Drive Capability
µ
TQFN IC is soldered onto the evaluation
®
1
Application Note
ISL54208EVAL1Z Evaluation Board User’s
1-888-INTERSIL or 1-888-468-3774
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
Picture of Evaluation Board (Top View)
Board Architecture/Layout
Basic Layout of Evaluation Board
The basic layout of the main board is as follows: Refer to
Figure 1.
Power (J2), GND (J1), logic IN (J3) and logic CTRL (J11)
banana jack connections are at the top of the board.
Audio/Video Source RCA inputs are at the lower right side of
the board (J13 and J15). Audio/Video RCA outputs are at
the lower left side of the board (J5 and J7).
A standard “B” type USB connection to an upstream host
controller (Computer) is made at connector J4, located on
left underside of the board. A standard “A” type USB
connection to a downstream USB device is made at
connector J12, located on right underside of the board.
Located in the center of the board is the ISL54208 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.
Note: The connectors J5 (VIDEO OUT) and J7 (MONO
AUDIO OUT) are connected in parallel to J4 (USB TO
HOST). When driving the USB input, the A/V output should
be in a high impedance state (and vice versa).
FIGURE 1. ISL54208EVAL1Z EVALUATION BOARD
All other trademarks mentioned are the property of their respective owners.
June 23, 2008
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright Intersil Americas Inc. 2008. All Rights Reserved
Manual
AN1359.0
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ISL54208EVAL1Z Summary of contents
Page 1
... Application Note Description The ISL54208EVAL1Z evaluation board is designed to provide a quick and easy method for evaluating the ISL54208 USB/CVBS/Audio IC. The ISL54208 device is an unique IC. To use this evaluation board properly, requires a thorough knowledge of the operation of the IC. Refer to the ISL54208 datasheet for an understanding of the functions and features of the device. Studying the device’ ...
Page 2
Power Supply The DC power supply connected at banana jacks J2 (VDD) and J1 (GND) provides power to the evaluation board. The IC requires a +2.7V to +3.6V DC power supply for proper operation. The power supply should be capable ...
Page 3
VIDEO OUT (J5) and the audio input port of the TV should be connected to MONO AUDIO OUT (J7). The BNC connector parallel with J5 and the D- line of the J4 (USB TO HOST) ...
Page 4
COMPUTER USB PORT TV MONITOR AV VIDEO AV AUDIO FIGURE 2. BASIC EVALUATION TEST SETUP BLOCK DIAGRAM Using The Board ( Refer to Figure Lab Equipment The equipment, external supplies and signal sources needed to operate the board are listed ...
Page 5
... A Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without notice. Accordingly, the reader is cautioned to verify that the Application Note or Technical Brief is current before proceeding. For information regarding Intersil Corporation and its products, see www.intersil.com ...