ISL54214EVAL1Z Intersil, ISL54214EVAL1Z Datasheet - Page 5

• Manufacturer Part Number: ISL54214EVAL1Z
• Description: EVALUATION BOARD FOR ISL54214
• Manufacturer: Intersil

Specifications of ISL54214EVAL1Z

• Main Purpose: Interface, 3:1 Multiplexer
• Embedded: No
• Utilized Ic / Part: ISL54214
• Primary Attributes: 2 x SP3T Analog Switch
• Secondary Attributes: 2.7 V ~ 4.6 V Supply
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

USB1 Mode Operation
You can switch between the two USB devices by toggling the
S2 and S1 switches. It is recommended when switching
between USB devices to take both toggle switches to the “L”
(low position) momentarily turning all switch channels OFF
and then take the appropriate toggle switch to the “H”
position to connect the USB device.
If you disconnect the USB cable from J15 and take the S2
and S1 toggle switches to the “H” position, the IC will return
to Audio mode. You can now plug the headphone set into the
headphone jack, turn the audio source ON to once again
play music.
USB2 Mode Operation
4. Toggle S1 to the “L” position to mute the audio signal.
5. You can observe the audio signals at the output of the IC
1. Turn OFF audio stereo source.
2. Remove headphone from J20 Headphone Jack.
3. Logic Control: Put S2 and S1 toggle switches in the “L”
4. Logic Control: Put S2 toggle switch in the “L” (low)
5. Connect USB cable from computer USB port to the USB
6. You will now be able to send and receive data between
7. You can observe the D- and D+ USB digital signals on an
8. Remove the 0Ω resistors R
1. Turn OFF audio stereo source.
2. Remove headphone from J20 Headphone Jack.
3. Logic Control: Put S2 and S1 toggle switches in the “L”
Return it to the “H” position to play the music.
on an oscilloscope or audio analyzer by using the J11and
J12 BNC connectors. Connect to J11 for left audio and
J12 for right audio.
(low) position. You will now be in ALL OFF mode (All
switches of the device will be OFF).
position and the S1 toggle switch in the “H” (high)
position. You will now be in USB1 mode (6.2Ω USB
channel 1 switches are ON).
“A” type receptacle, J15 (USB TO HOST) on the
evaluation board. The computer should indicate that it is
connected to the USB device connected at the J13 (USB
TO DEVICE 1) connector.
the computer and USB device 1.
oscilloscope or other test equipment by connecting to the
JP1 and JP3 test points located on the board.
performance (i.e. eye diagram, etc.) of the high speed
USB signal. Removal of these resistors disconnects the
headphone jack (J20), the BNC connectors (J11, J12)
and the bank of load resistors (R7, R8, R9, R10, R11,
R12, R13, and R14) from the USB differential lines.
These components, when connected will degrade the
USB signal. These components will not be there in an
actual application.
(low) position. You will now be in ALL OFF mode (All
switches of the device will be OFF).
5
1
and R
2
when evaluating the
Application Note 1451
You can switch between the two USB devices by toggling the
S2 and S1 switches. It is recommended when switching
between USB devices to take both toggle switches to the “L”
(low position) momentarily turning all switch channels OFF
and then take the appropriate toggle switch to the “H”
position to connect the USB device.
If you disconnect the USB cable from J15 and take the S2
and S1 toggle switches to the “H” position, the IC will return
to Audio mode. You can now plug the headphone set into the
headphone jack, turn the audio source ON to once again
play music.
Test Points
The board has various test points for connecting probes to
make measurements. The test points available are
described in Table 2.
4. Logic Control: Put S2 toggle switch in the “H” (high)
5. Connect USB cable from computer USB port to the USB
6. You will now be able to send and receive data between
7. You can observe the D- and D+ USB digital signals on an
8. Remove the 0Ω resistors R
DESIGNATOR
position and the S1 toggle switch in the “L” (low) position.
You will now be in USB2 mode (6.2Ω USB channel 2
switches are ON).
“A” type receptacle, J15 (USB TO HOST) on the
evaluation board. The computer should indicate that it is
connected to the USB device connected at the J14 (USB
TO DEVICE 2) connector.
the computer and USB device 2.
oscilloscope or other test equipment by connecting to the
JP1 and JP2 test points located on the board.
performance (i.e. eye diagram, etc.) of the high speed
USB signal. Removal of these resistors disconnects the
headphone jack (J20), the BNC connectors (J11, J12)
and the bank of load resistors (R7, R8, R9, R10, R11,
R12, R13, and R14) from the USB differential lines.
These components when connected will degrade the
USB signal. These components will not be there in an
actual application.
TP1
TP2
TP3
TP4
TP5
JP1
JP2
JP3
TABLE 2. TEST POINT DESCRIPTIONS
V
Ground Test Point
C0 Logic Test Point
C1 Logic Test Point
Test Point
D-/D+ Differential Probe Connection - COM Side
of Switch
D-/D+ Differential Probe Connection - USB
Device 2 Side of Switch
D-/D+ Differential Probe Connection - USB
Device 1Side of Switch
DD
Test Point
1
and R
DESCRIPTION
2
when evaluating the
January 23, 2009
AN1451.0