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MAX9568 Evaluation Kit
Component Supplier
SUPPLIER
Murata Electronics North America, Inc.
PHONE
770-436-1300
WEBSITE
www.murata-northamerica.com
Note: Indicate that you are using the MAX9568 when contacting this component supplier.
Quick Start
Required Equipment
Before beginning, the following equipment is needed:
? MAX9568 EV kit
? 3.3V, 150mA DC power supply (VCC)
? Video signal generator (e.g., Tektronix TG-2000 or
similar)
Procedure
The MAX9568 EV kit is fully assembled and tested.
Follow the steps below to verify board operation.
Caution: Do not turn on the power supply until all
connections are completed.
1) Set the power-supply output to 3.3V and turn off the
power supply.
2) Connect the power-supply ground to the GND pad
on the EV kit.
3) Connect the power-supply output to the VCC pad on
the EV kit.
4) Connect the output of the video signal generator to
the CVID_IN BNC connector on the EV kit.
5) Set the video signal generator for the desired video
input signal.
6) Turn on the power supply and enable the video sig-
nal generator.
7) To identify the video signal standard, use the
silkscreen table on the EV kit, or see Table 1 and
verify the logic level of the SDTV, HDTV, and HL
pads on the EV kit.
Detailed Description of Hardware
The MAX9568 EV kit contains a MAX9568 IC. The
MAX9568 is a video sync separator that extracts sync
timing information from SDTV, EDTV, and HDTV compo-
nent video signals. The MAX9568 is a stand-alone
device that requires no external components for timing
or biasing. The MAX9568 has a high-impedance input
that eliminates the need for buffering.
The MAX9568 EV kit’s input is terminated at 75 Ω by
resistor R1 and AC-coupled by capacitor C3. The EV kit
also provides PCB footprints R2 and C4 for a lowpass
filter at the video input. When a lowpass filter is
required at the input, cut open the PCB trace between
the R2 PCB pad and install the appropriate filtering
components on the R2 and C4 PCB pads. Refer to the
Chroma Filter section in the MAX9568 IC data sheet for
additional information.
Composite Sync Output ( CSYNCOUT )
The MAX9568 EV kit provides a composite sync output
( CSYNCOUT ) PCB pad to access the composite sync
waveform of the video input signal. The composite sync
waveform is the video input waveform with the active
video removed. The CSYNCOUT outputs a logic-low
whenever sync is detected.
Vertical Sync Output ( VSYNCOUT )
The MAX9568 EV kit provides a vertical sync output
( VSYNCOUT ) PCB pad to access the vertical sync
waveform of the video input signal. The vertical sync
waveform defines the beginning of a new frame in the
video input signal. The VSYNCOUT outputs a logic-low
whenever a vertical sync pulse interval is detected.
Horizontal Sync Output ( HSYNCOUT )
The MAX9568 EV kit provides a horizontal sync output
( HSYNCOUT ) PCB pad to access the horizontal sync
waveform of the video input signal. The horizontal sync
waveform defines the beginning of a new line in the
video input signal. The HSYNCOUT outputs a logic-low
whenever a horizontal sync pulse is detected.
Television Standard Detection
(SDTV, HDTV, HL)
The MAX9568 EV kit provides three PCB pads to indi-
cate the standard of the component video signal at the
input. They are the standard-definition television
(SDTV), high-definition television (HDTV), and the num-
ber of horizontal lines (HL).
The SDTV PCB pad outputs a logic-high to indicate stan-
dard-definition television, while SDTV output low indi-
cates extended-definition or high-definition television.
The HDTV PCB pad outputs a logic-high to indicate high-
definition television, while HDTV output low indicates stan-
dard-definition or extended-definition television.
The HL PCB pad outputs a logic-high to indicate 625i,
625p/576p, and 1080i standards, while HL output low
indicates 525i, 525p/480p, and 720p standards (see
Table 1).
2
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