4
AN1358.0
June 23, 2008
Using The Board (
Refer to Figure 2
)
Lab Equipment
The equipment, external supplies and signal sources
needed to operate the board are listed below:
1. +3V to 5V DC Power Supply
2. Audio/Video Media Player with USB connector (video
MP3, digital camera, camcorder) or Audio/Video
Generator
3. TV Monitor or Audio/Video Analyzer/Oscilloscope
4. Two standard USB cables
5. Computer with USB port
Initial Board Setup Procedure
1. Attach the main evaluation board to the DC power supply
at J2 (V
DD
) and J1 (GND). Positive terminal at J2 and
negative terminal at J1. The supply should be capable of
delivering 3V to 5V
and 100µ
A
of current. Set the supply
voltage to 3.3V.
2. Connect the media player’s composite video source to
the J13 RCA connector or the J14 BNC connector and
the mono audio source to the J15 RCA connector or J16
BNC connector. Set the media player to output either
NTSC or PAL composite video signal.
3. Connect the USB port of the media player to the USB “A”
type receptacle, J12 (USB TO DEVICE).
Audio/Video Mode Operation
1. Connect the TV monitor AV video input at J5 (VIDEO
OUT) and the AV audio input at J7 (MONO AUDIO OUT).
No USB cable should be connected at the J4 (USB TO
HOST) connector.
2. Set the TV to receive the video signal through its AV input
and set to the appropriate channel.
3. Connect J11 (CTRL) to J2 (V
DD
). You will now be in
Audio/Video mode (3
Ω
NC switches are ON).
4. Turn the audio/video media player ON. You should hear
and see the video on the TV screen.
5. You can observe the audio/video signals at the output of
the IC on an oscilloscope or audio/video analyzer by
using the J6 and J8 BNC connectors or appropriate test
points.
USB Mode Operation
1. Turn OFF the audio/video from the media player.
2. Disconnect the TV monitor from J5 and J7 RCA
connectors.
3. Connect a USB cable from host (PC computer) to the
USB “B” type receptacle, J4 (USB TO HOST). You will
now be in USB mode (5
Ω
NO switches are ON).
4. You should now be able to send and receive data
between the host and USB device.
5. Remove the 0
Ω
resistors R
3
and R
4
when evaluating the
signal quality performance (i.e. eye diagram, etc.) of the
high speed USB signal. Removal of these resistors
+3.3V
DC POWER
SUPPLY
ISL54207EVAL1Z EVALUATION BOARD
VDD
GND
FIGURE 2. BASIC EVALUATION TEST SETUP BLOCK DIAGRAM
J4
U1
+
-
USB TO HOST
J13
J15
COMPUTER
USB PORT
VIDEO IN
MONO AUDIO IN
J11
MONO AUDIO
COMPOSITE VIDEO
VIDEO MP3 PLAYER
USB PORT
VIDEO
DRIVER
J12
J14
J16
USB
TO
DEVICE
JP1
JP2
J9
J10
CTRL
J3
VBUS
J2
J1
AUDIO
DRIVER
TV MONITOR
AV VIDEO
AV AUDIO
C3
C4
J5
J7
J6
J8
VIDEO OUT
MONO AUDIO OUT
Application Note 1358
