Evaluates: MAX9671
MAX9671 Evaluation Kit
________________________________________________________________
Maxim Integrated Products
1
19-4704; Rev 0; 7/09
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.
General Description
The MAX9671 evaluation kit (EV kit) is an assembled
and tested PCB used to evaluate the MAX9671 dual
SCART audio/video switch matrix. It routes audio,
video, and control signals between a set-top box
decoder chip and the VCR/TV SCART connectors. The
on-board microcontroller, which is connected to the PC
through the universal serial bus (USB) port, acts as the
I2C master.
The EV kit also includes Windows® 2000-, Windows
XP®-, and Windows Vista®-compatible software that
provides a simple user interface for exercising the
MAX9671 features. The program is menu driven and
offers a graphical user interface (GUI) complete with
control buttons and status displays. The EV kit comes
with the MAX9671CTH+ installed.
Features
oWindows 2000-, Windows XP-, and Windows Vista
(32-Bit)-Compatible Software
oVCR/TV SCART Connectors
oOn-Board Microcontroller to Generate I2C
Commands
oEasy-to-Use, Menu-Driven Software
oUSB-PC Connection (Cable Included)
oLead(Pb)-Free and RoHS Compliant
Component List
Ordering Information
PART TYPE
MAX9671EVKIT+ EV Kit
Windows, Windows XP, and Windows Vista are registered trademarks of Microsoft Corp.
+
Denotes lead(Pb)-free and RoHS compliant.
DESIGNATION QTY DESCRIPTION
C1, C12, C14,
C55, C56 5
10μF ±10%, 16V X5R ceramic
capacitors (0805)
KEMET C0805C106K4PACTU
C2, C3 2
22pF ±5%, 50V C0G ceramic
capacitors (0603)
Murata GRM1885C1H220J
C4 1
0.033μF ±10%, 16V X5R ceramic
capacitor (0603)
Taiyo Yuden EMK107BJ333KA
C5–C10, C17,
C18, C21–C38,
C41–C50, C53,
C59–C64,
C66–C71
49
0.1μF ±10%, 16V X7R ceramic
capacitors (0603)
TDK C1608X7R1C104K
C11, C13, C39,
C40, C57 5
1μF ±10%, 16V X5R ceramic
capacitors (0603)
TDK C1608X5R1C105K
C15, C16 2
10pF ±5%, 50V C0G ceramic
capacitors (0603)
Murata GRM1885C1H100J
C19, C20, C51,
C52, C72, C73 6
1μF ±10%, 16V X7R ceramic
capacitors (0805)
TDK C2012X7R1C105K
DESIGNATION QTY DESCRIPTION
C54, C58 2
0.47μF ±10%, 16V X7R ceramic
capacitors (0603)
Murata GRM188R71C474K
C65 0 Not installed, capacitor (0603)
D1–D20, D22,
D23 22
Dual 100V, 200mA diodes
(3 SOT23)
Central Semi CMPD7000 LEAD
FREE
D21 0 Not installed, diode (3 SOT23)
ENC_B_IN,
ENC_C_IN,
ENC_G_IN,
ENC_R/C_IN,
ENC_Y_IN,
ENC_Y/CVBS_IN,
VCR_R/C_IN
775 BNC female jacks, 4-pin,
0.250in spacing (top mount)
H1 0 Not installed, 2 x 5-pin header
JU1 1 5-pin header
JU2–JU7 6 3-pin headers
L1 1
Ferrite bead (0603)
TDK MMZ1608R301A
P1 1
USB type-B right-angle PC-mount
receptacle
Evaluates: MAX9671
MAX9671 Evaluation Kit
2 _______________________________________________________________________________________
Component List (continued)
DESIGNATION QTY DESCRIPTION
P2, P3 2 SCART connectors (side-entry PCB
mount)
P4 1
RCA phono jack (side-entry PCB
mount), white
P5 1
RCA phono jack (side-entry PCB
mount), red
R1, R2 2 27 ±5% resistors (0603)
R3, R31, R32,
R33 4 1.5k ±5% resistors (0603)
R4 1 470 ±5% resistor (0603)
R5 1 2.2k ±5% resistor (0603)
R6 1 10k ±5% resistor (0603)
R7 1 169k ±1% resistor (0603)
R8 1 100k ±1% resistor (0603)
R9–R13 0
Not installed, resistors—shorted by
PCB trace (0402)
R14, R17,
R20–R30,
R34–R55, R68
36 75 ±5% resistors (0603)
R15, R18, R69,
R70 4 7.68k ±1% resistors (0603)
R16, R19, R71,
R72 4 2.55k ±1% resistors (0603)
R56, R58 2 6.65k ±1% resistors (0603)
R57, R59 2 4.53k ±1% resistors (0603)
DESIGNATION QTY DESCRIPTION
R60, R61 2 5.60k ±1% resistors (0603)
R62–R67 0
Not installed, resistors—shorted by
PCB trace (0603)
U1 1
Dual SCART audio/video switch
matrix (44 TQFN-EP*)
Maxim MAX9671CTH+
U2 1
Microcontroller (68 QFN-EP*)
Maxim MAXQ2000-RAX+
U3 1
LDO regulator (5 SC70)
Maxim MAX8511EXK25+
U4 1
Adjustable output LDO regulator
(5 SC70)
Maxim MAX8512EXK+
U5 1
UART-to-USB converter
(32 TQFP-L)
U6 1 93C46A type 3-wire EEPROM (8 SO)
Y1 1
16MHz crystal (HCM49)
Hong Kong X’tals
SSM16000N1HK188F0-0
Y2 1
6MHz crystal (HCM49)
Hong Kong X’tals
SSL60000N1HK188F0-0
— 7 Shunts
— 1 USB high-speed A-to-B cables, 6ft
— 1 PCB: MAX9671 EVALUATION KIT+
Component Suppliers
SUPPLIER PHONE WEBSITE
Central Semiconductor Corp. 631-435-1110 www.centralsemi.com
Hong Kong X’tals, Ltd. 852-35112388 www.hongkongcrystal.com
KEMET Corp. 864-963-6300 www.kemet.com
Murata Electronics North America, Inc. 770-436-1300 www.murata-northamerica.com
Taiyo Yuden 800-348-2496 www.t-yuden.com
TDK Corp. 847-803-6100 www.component.tdk.com
*EP = Exposed pad.
Note: Indicate that you are using the MAX9671 when contacting these component suppliers.
Evaluates: MAX9671
MAX9671 Evaluation Kit
_______________________________________________________________________________________ 3
Quick Start
Recommended Equipment
• MAX9671 EV kit (USB cable included)
• User-supplied Windows 2000, Windows XP, or
Windows Vista PC with a spare USB port
• 12V/100mA DC power supply (V12)
• 3.3V/250mA DC power supply (VVID)
• 3.3V/100mA DC power supply (VAUD)
• Two DVD players with S-video, composite, or RGB
outputs
• S-video to BNC Y connector
Note: In the following sections, software-related items
are identified by bolding. Text in bold refers to items
directly from the EV kit software. Text in bold and
underlined refers to items from the Windows operating
system.
Procedure
The MAX9671 EV kit is fully assembled and tested. Follow
the steps below to verify board operation. Caution: Do
not turn on power supplies until all connections are
completed.
1) Visit www.maxim-ic.com/evkitsoftware to down-
load the latest version of the EV kit software,
9671Rxx.ZIP. Save the EV kit software to a tempo-
rary folder and uncompress the ZIP file.
2) Install the EV kit software on your computer by run-
ning the INSTALL.EXE program inside the tempo-
rary folder. The program files are copied and icons
are created in the Windows Start | Programs
menu.
3) Verify that all jumpers (JU1–JU7) are in their default
positions, as shown in Tables 1 and 2. Do not turn
on the power until all connections are completed.
4) Connect the 12V/100mA DC power supply to the
V12 and the V12GND pads on the MAX9671 EV kit
board.
5) Connect the 3.3V/250mA DC power supply to the
VVID and the GNDVID pads on the MAX9671 EV kit
board.
6) Connect the 3.3V/100mA DC power supply to the
VAUD and the GNDAUD pads on the MAX9671 EV
kit board.
7) Connect the GNDVID and GNDAUD pads together
at the board.
8) Connect the V12GND and GNDAUD pads together
at the board.
9) Connect the DIGGND and GNDAUD pads together
at the board.
10) Connect the first DVD player output to the appropri-
ate ENC input(s).
11) Connect the second DVD player to the VCR SCART
(P2) connector.
12) Connect a TV to the TV SCART (P3) connector.
13) Connect the USB cable from the PC to the EV kit
board. A New Hardware Found windows pops up
when installing the USB driver for the first time. If
you do not see a window that is similar to the one
described above after 30s, remove the USB cable
from the board and reconnect it. Administrator privi-
leges are required to install the USB device driver
on Windows.
14) Follow the directions of the Add New Hardware
Wizard to install the USB device driver. Choose the
Search for the best driver for your device option.
Specify the location of the device driver to be
C:\Program Files\MAX9671 (default installation
directory) using the Browse button. During device
driver installation, Windows may show a warning
message indicating that the device driver Maxim
uses does not contain a digital signature. This is not
an error condition and it is safe to proceed with
installation. Refer to the USB_Driver_Help.PDF doc-
ument included with the software for additional
information.
15) Turn on the power supplies.
16) Start the EV kit software by opening its icon in the
Start | Programs menu. The EV kit software main
window appears, as shown in Figure 1. Observe as
the program automatically detects the address of
the MAX9671 and starts the main program.
MAX9671 EV Kit Files
FILE DESCRIPTION
INSTALL.EXE Installs the EV kit files on your
computer
MAX9671.EXE Application program
FTD2XX.INF USB driver file
UNINST.INI Uninstalls the EV kit software
USB_Driver_Help.PDF USB driver installation help file
Evaluates: MAX9671
MAX9671 Evaluation Kit
4 _______________________________________________________________________________________
Detailed Description of Software
User Interface
The user interface (Figure 1) is easy to operate. Use the
mouse, or press the tab key to navigate with the arrow
keys. Each of the buttons correspond to bits in the
command and configuration bytes. By pressing them,
the correct I2C-compatible write operation is generated
to update the internal registers of the MAX9671. The
Interface group box indicates the current I2C-compati-
ble Device Address, Register Address Sent, and the
Data Sent/Received for the last read/write operation.
This data is used to confirm proper device operation.
The MAX9671 EV kit software splits and groups the
functions of the MAX9671 into three separate cate-
gories. TV, VCR, and Configuration functions can be
accessed by selecting the appropriate tab at the top
left of the MAX9671 EV kit software main window. The
TV and VCR tab sheets of the MAX9671 EV kit software
are again split into two sections, Video Control and
Audio Control.
The device status registers (refer to the MAX9670/
MAX9671 IC data sheet for status register information)
are displayed in the MAX9671 Status group box and
the Video Activity Status group box at the bottom right
of the main window. To read the status register, press
the Read Status button, or check the Automatic
Status Read checkbox to automatically read the status
register every 250ms. The Interrupt Status group box
allows the user to detect interrupts by checking the
Interrupt Enable checkbox.
Press the POR Reset button to reset the MAX9671 reg-
isters and EV kit software to their power-on-reset con-
figuration.
SHUNT
POSITION DEV_ADDR B7 B6 B5 B4 B3 B2 B1 B0 WRITE ADDRESS
(HEX)
READ ADDRESS
(HEX)
1-2* VDD 1 0 0 1 0 1 1 R/W 0x96 0x97
1-3 SCL 1 0 0 1 1 0 0 R/W 0x98 0x99
1-4 DIGGND 1 0 0 1 0 1 0 R/W 0x94 0x95
1-5 SDA 1 0 0 1 1 0 1 R/W 0x9A 0x9B
Table 1. Shunt Setting for SMBus/I2C Address (JU1)
*
Default position.
JUMPER SHUNT
POSITION DESCRIPTION
1-2* Connect to 1.2VRMS FS
JU2 2-3 Connect to 1.1VRMS FS
1-2* Connect to 1.2VRMS FS
JU3 2-3 Connect to 1.1VRMS FS
1-2* Connect to on-board SDA
JU4 2-3 Connect to user-supplied SDA
1-2* Connect to on-board SCL
JU5 2-3 Connect to user-supplied SCL
1-2* Connect the MAX9671’s interrupt output to the on-board MAXQ2000’s on-board interrupt input
JU6 2-3 Connect to user-supplied interrupt
1-2* Connect to on-board +3.3V supply
JU7 2-3 Connect to user-supplied +3.3V
Table 2. MAX9671 EV Kit Jumper Description (JU2–JU7)
*
Default position.
Evaluates: MAX9671
MAX9671 Evaluation Kit
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TV Controls (Video Control)
The Video Control group box of the MAX9671 EV kit
software (Figure 1) allows the user to reroute selected
signals to the TV SCART connector. Other functions,
such as Fast Switching and Slow Switching, can
also be changed through the Video Control group
box. Manipulate the drop-down lists to achieve the
desired result.
TV Controls (Audio Control)
The Audio Control group box of the MAX9671 EV kit
software allows the user to adjust various audio charac-
teristics of the TV output. Input Source, Volume
Control, Mute, and Zero Crossing Detector can also
be accessed from the Audio Control group box (refer
to the MAX9670/MAX9671 IC data sheet for a descrip-
tion of each of these functions).
Figure 1. MAX9671 EV Kit Software Main Window (TV Control Tab)
Evaluates: MAX9671
MAX9671 Evaluation Kit
6 _______________________________________________________________________________________
VCR Controls (Video Control)
The VCR tab sheet of the MAX9671 EV kit software is
shown in Figure 2. SCART output signals (VCR_Y/
CVBS_OUT and VCR_R/C_OUT), Chrominance Bias
at VCR_R/C_IN, Slow Switching, and Pulldown
VCR_R/C_OUT functions can all be accessed through
the Video Control group box.
VCR Controls (Audio Control)
Adjust the Input Source through the Audio Control
group box of the MAX9671 EV kit software.
Configuration Controls
Selecting the Configuration tab sheet (Figure 3) of the
MAX9671 EV kit software allows the user to adjust con-
figuration features of the MAX9671. Checking desired
checkboxes in the Output Enable group box enables
selected outputs of the MAX9671. The Operating
Modes group box allows the user to select one of four
power modes. When the Automatic Read checkbox is
checked, it automatically reads all registers and recon-
figures the software appropriately to the register that
was read. When in standby mode, the context of the
registers does not change to reflect the standby state.
A bias voltage can also be applied at the R/C input of
the encoder (Chrominance Bias at ENC_R/C_IN). The
EV kit software checks to see if the slave is present
every second. Checking the Disable I2C Activity
checkbox stops activity between the microcontroller
and the MAX9671 when the software is idle.
Figure 2. MAX9671 EV Kit Software Main Window (VCR Control Tab)
Evaluates: MAX9671
MAX9671 Evaluation Kit
_______________________________________________________________________________________ 7
Advanced User Interface
There are two methods for communicating with the
MAX9671, through the normal user-interface main win-
dow or through the I2C commands available by select-
ing the Options | Interface (Advanced Users) from the
menu bar. An Advanced User Interface window pops
up with the 2-wire interface tab selected, which allows
the SMBus™/I2C-compatible protocols, such as Read
Byte and Write Byte, to be executed. The only
SMBus/I2C-compatible protocols used by the MAX9671
are:
• 1 - SMBusWriteByte(addr,cmd,data8)
• 4 - SMBusReadByte(addr,cmd) →data8
The combo and edit boxes accept numeric data in
hexadecimal and should be prefixed by 0x. See Figure
4 for an example of this tool.
Detailed Description of Hardware
The MAX9671 EV kit is an assembled and tested PCB
that demonstrates the features of the MAX9671 dual
SCART audio/video switch matrix. It routes audio, video,
and control signals between a set-top box decoder chip
and the TV and VCR SCART connectors. All video con-
nections are made through 75Ωcontrolled-impedance
traces. Connect a TV and VCR to the corresponding
SCART connectors. The set-top box decoder video con-
nections are made through the 75ΩBNC jacks with the
ENC prefix. Audio signals from the stereo audio DAC
are connected to the white and red (P4 and P5) RCA
phono jacks. Monitor the R/C inputs of the VCR connec-
tions through the VCR_R/C_IN BNC jack.
Figure 3. MAX9671 EV Kit Software Main Window (Configuration Control Tab)
SMBus is a trademark of Intel Corp.
Evaluates: MAX9671
MAX9671 Evaluation Kit
8 _______________________________________________________________________________________
Figure 4. Example of a Simple SMBusReadByte Operation Using the Advanced User Interface
Address Selection
Jumper JU1 sets the MAX9671 slave address. The
default address is 1001 011(R/W) (DEV_ADDR = VDD).
See Table 1 for a complete list of addresses.
Audio Encoder Inputs
Connect a stereo audio source that represents the
encoder audio to P4 (left audio) and P5 (right audio).
The Cirrus CS4334/5/8/9 and Burr-Brown PCM1742 are
commonly used in set-top boxes to convert a digital I2S
audio stream to analog-stereo audio signals. The full-
scale audio level of the CS4334 is 1.2VRMS, while the
full-scale audio level of the PCM1742 is 1.1VRMS. Both
parts center their audio outputs in the middle of their
analog supply voltage range.
The ENC_INL and ENC_INR inputs expect the incoming
audio signal to have a full scale of 0.5VRMS and to be
centered around ground. Therefore, the audio signals
presented to P4 and P5 are AC-coupled and attenuat-
ed by a resistor-divider network. The amount of attenua-
tion is determined by jumpers JU2 and JU3. If the shunt
position is 1-2, the resistor-divider network attenuates a
1.2VRMS full-scale audio signal to a 0.5VRMS full-scale
audio signal. If the shunt position is 2-3, the resistor-
divider network attenuates a 1.1VRMS full-scale audio
signal to a 0.5VRMS full-scale audio signal.
If the audio source does not have either a 1.2VRMS or
1.1VRMS full-scale signal, then the resistor-divider net-
work can be adjusted to accommodate another full-
scale audio level. For example, if the incoming audio
signal is 2VRMS full scale, then the signal must be
attenuated by a factor of 4. Set the shunt positions of
JU2 and JU3 to 1-2. Change resistors R57 and R59
from a 4.53kΩresistor to a 2.2kΩresistor.
Evaluates: MAX9671
MAX9671 Evaluation Kit
_______________________________________________________________________________________ 9
p
Figure 5a. MAX9671 EV Kit Schematic (Sheet 1 of 2)
Evaluates: MAX9671
MAX9671 Evaluation Kit
10 ______________________________________________________________________________________
Figure 5b. MAX9671 EV Kit Schematic (Sheet 2 of 2)
Evaluates: MAX9671
MAX9671 Evaluation Kit
______________________________________________________________________________________ 11
Figure 6. MAX9671 EV Kit Component Placement Guide—Component Side
Evaluates: MAX9671
MAX9671 Evaluation Kit
12 ______________________________________________________________________________________
Figure 7. MAX9671 EV Kit Component PCB Layout—Component Side
Evaluates: MAX9671
MAX9671 Evaluation Kit
______________________________________________________________________________________ 13
Figure 8. MAX9671 EV Kit PCB Layout—Inner Layer 2
Evaluates: MAX9671
MAX9671 Evaluation Kit
14 ______________________________________________________________________________________
Figure 9. MAX9671 EV Kit PCB Layout—Inner Layer 3
Evaluates: MAX9671
MAX9671 Evaluation Kit
______________________________________________________________________________________ 15
Figure 10. MAX9671 EV Kit PCB Layout—Solder Side
Evaluates: MAX9671
MAX9671 Evaluation Kit
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
16
____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2009 Maxim Integrated Products Maxim is a registered trademark of Maxim Integrated Products, Inc.
Figure 11. MAX9671 EV Kit Component Placement Guide—Solder Side
