19-4170; Rev 0; 6/08
MAX9568 Evaluation Kit
General Description
The MAX9568 evaluation kit (EV kit) is a fully assembled
and tested surface-mount PCB that contains a
MAX9568 IC. The MAX9568 is a video sync separator
that extracts sync timing information from standard-
definition (SDTV), extended-definition (EDTV), and high-
definition (HDTV) component video signals.
The MAX9568 is a stand-alone device that requires no
external components for timing or biasing. The high-
impedance video input prevents loading of the input sig-
nal and eliminates the need for buffering. The MAX9568
operates from a 2.7V to 5.5V DC power supply.
Features
o
Single 2.7V to 5.5V DC Power-Supply Operation
o
Stand-Alone Operation (No Timing Components
Required)
o
Covers All Major Video Standards: SDTV, EDTV,
and HDTV
o
Loss of Video Signal Detection
o
Coast and Clamp Pulse Output
o
High-Impedance Video Input
o
Surface-Mount Components
o
Evaluates the MAX9568 in a 16-Pin QSOP
Package
o
Fully Assembled and Tested
Evaluates: MAX9568
Component List
DESIGNATION
CVID_IN
CVIDIN
C1, C3
QTY
1
0
2
DESCRIPTION
50Ω BNC PCB-mount jack connector
Not installed, test point
0.1µF ±10%, 16V X7R ceramic
capacitors (0603)
Murata GRM188R71C104K
10µF ±20%, 6.3V X5R ceramic
capacitor (0603)
Murata GRM188R60J106M
Not installed, capacitor (0603)
75Ω ±1% resistor (0603)
Not installed, resistor–short
(PC trace) (0603)
Video sync separator (16 QSOP)
Maxim MAX9568EEE+
PCB: MAX9568 Evaluation Kit+
PART
MAX9568EVKIT+
Ordering Information
TYPE
EV Kit
+Denotes
lead-free and RoHS compliant.
C2
C4
R1
R2
U1
—
1
0
1
0
1
1
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
MAX9568 Evaluation Kit
Evaluates: MAX9568
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)
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.
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.
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).
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 75Ω 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
2
_______________________________________________________________________________________
MAX9568 Evaluation Kit
Table 1. Video Standard Output Decoding
TV STANDARD
525i
625i
525p/480p
625p/576p
720p
1080i/60
1080i/50
CLASSIFICATION
SDTV
SDTV
EDTV
EDTV
HDTV
HDTV
HDTV
MAX9568 EV KIT OUTPUT PADS
FR
High
Low
High
Low
High
High
Low
SDTV
High
High
Low
Low
Low
Low
Low
HDTV
Low
Low
Low
Low
High
High
High
HL
Low
High
Low
High
Low
High
High
Evaluates: MAX9568
Frame Rate Output (FR)
The MAX9568 EV kit provides a frame rate output (FR)
PCB pad to indicate the frame rate of the video input
signal. The FR PCB pad outputs a logic-high when the
frame rate is 60Hz, and a logic-low when the frame rate
is 50Hz (see Table 1).
Coast (
COAST
)
The MAX9568 EV kit provides a coast (COAST) PCB
pad for the coast output signal. The
COAST
PCB pad
outputs a logic-low during the vertical interval to control
a phase-locked loop (PLL) oscillator to enable it to
coast through the vertical interval.
Loss-of-Sync Output (
LOS
)
The MAX9568 EV kit provides a loss-of-sync output
(LOS) PCB pad to indicate the presence of a valid
video input signal. The
LOS
PCB pad outputs a logic-
low when there is no valid sync or video signal at the
input, and a logic-high when a valid video sync pulse is
detected.
Odd and Even Field Detection (
ODD
/EVEN)
The MAX9568 EV kit provides an odd and even field
detection (ODD/EVEN) PCB pad to indicate the odd or
even field of an interlaced video signal. The
ODD/EVEN
PCB pad outputs a logic-high to indicate an even field,
and a logic-low to indicate an odd field.
Clamp Pulse Output (
CLAMP
)
The MAX9568 EV kit provides a clamp pulse output
(CLAMP) PCB pad to output a black-level clamping
signal. The
CLAMP
PCB pad outputs a logic-low when
the clamp signal is present.
_______________________________________________________________________________________
3
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