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19-2360; Rev 0; 3/02
MAX7432 Evaluation Kit Evaluates: MAX7428/MAX7430/MAX7432
General Description
The MAX7432 evaluation kit (EV kit) is an assembled and tested circuit board that demonstrates the MAX7428, MAX7430, and MAX7432 standard definition video reconstruction filters and buffers. Windows (R) 98/2000 software provides a handy-user interface to exercise the features of the MAX7428/MAX7430/ MAX7432. Order the complete EV system (MAX7432EVC16) for comprehensive evaluation of the MAX7428/MAX7430/ MAX7432 using a personal computer. Order the EV kit (MAX7432EVKIT) if the 68HC16MODULE module has already been purchased with a previous Maxim EV system, or for custom use in other C-based systems.
Windows is a registered trademark of Microsoft Corp.
Features
o Proven PC Board Layout o Convenient On-Board Test Points o Fully Assembled and Tested
Ordering Information
PART MAX7432EVKIT MAX7432EVC16 TEMP RANGE 0C to +70C 0C to +70C INTERFACE TYPE User-Supplied Windows Software
Component Supplier
SUPPLIER Sanyo USA PHONE 619-661-6835 FAX WEBSITE 619-661-1055 www.sanyo.com
MAX7432EVC16 Parts List
QTY 1 1 MAX7432EVKIT 68HC16MODULE-DIP PART
Note: When contacting, please specify that you are using the MAX7428/MAX7430/MAX7432.
Component List
REFERENCE QTY C1, C4-C18 C2 C3 C19-C24 C25 C26-C31 FB1, FB2 INA1-INA6, INB1-INB6, OUT1-OUT6 J1 JU1 R1, R2, R3 R4 16 1 1 6 1 6 2 DESCRIPTION 0.1F, 10V X7R ceramic capacitors (0805) 0.01F, 10V X7R ceramic capacitor (0805) 1000pF, 10V X7R ceramic capacitor (0805) 220F, 6V aluminum electrolytic capacitors (8 x 10.5), Sanyo 6CV220EX 10F, 10V tantalum capacitor (B) Open (reserved for Sanyo 4CV820EX) Ferrite beads (0805) Murata BLM21A102S BNC female jacks, 4 pin, 0.250in. spacing 2 x 20 right-angle socket 2-pin header 301k 1% surface-mount resistors (1206) 10k 5% surface-mount resistor (1206) REFERENCE QTY R5-R10 R11-R22 R23-R34 TB1 U1 U2 U3 None None None None None None None 6 12 0 1 1 1 1 1 1 1 1 1 1 1 DESCRIPTION 75 1% surface-mount resistors (1206) 1M 5% surface-mount resistors (1206) Open (reserved for 75 5% surfacemount resistors) 0.200in. screw terminal block Maxim MAX7428EKA Maxim MAX7430EUB Maxim MAX7432EUD PC board, MAX7432 EV kit 3 1/2in. software disk, MAX7432 EV kit MAX7428 data sheet MAX7430 data sheet MAX7432 data sheet MAX7432 EV kit data sheet 68HC16MODULE-DIP data sheet
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________________________________________________________________ Maxim Integrated Products
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For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim's website at www.maxim-ic.com.
MAX7432 Evaluation Kit Evaluates: MAX7428/MAX7430/MAX7432
Quick Start
Recommended Equipment
Before you begin, you will need the following equipment: * Maxim MAX7432EVKIT and 68HC16MODULE interface board * * * * A small DC power supply, such as a 12V DC 0.5A plug-in transformer, or a 9V battery A computer running Windows 98/2000 A spare serial communications port, preferably a 9-pin plug A serial cable to connect the computer's serial port to the 68HC16MODULE 11) To verify the setup, switch all devices from input A to input B by selecting Input B in the Control Word and then clicking Broadcast.
Detailed Description of Software
Selecting the Device Address
At power-on reset, all devices are assigned address 0000. To assign unique addresses, each device must be initialized, starting with the device with the largest CEXT value. Clicking Initialize All Devices automatically assigns addresses from the Unused IDs list. Manually assign addresses by dragging the desired address from the Unused IDs list into the address assignment grid. To reassign a chip's address, the chip must be reset. The Reset Chip button resets only the selected chip, while Reset All Chips broadcasts the reset command to all chips. The EV kit is built with standard 20% capacitors, limiting the number of device addresses to seven. Applications requiring more than seven devices must use 10% capacitors. The EV kit software supports either 10% or 20% capacitor tolerance.
1) With the power off, connect a 7V to 20V DC power supply to the C module at the terminal block located next to the on/off switch, along the top edge of the C module. Observe the polarity marked on the board. 2) Carefully connect the boards by aligning the 40-pin header of the MAX7432 EV kit with the 40-pin connector of the 68HC16MODULE-DIP module. Gently press them together. The two boards should be flush against one another. 3) Connect a cable from the computer's serial port to the C module. If using a 9-pin serial port, use a straight-through, 9-pin female-to-male cable. If the only available serial port uses a 25-pin connector, a standard 25-pin to 9-pin adapter will be required. The EV kit software checks the modem status lines (CTS, DSR, DCD) to confirm that the correct port has been selected. 4) Install the EV system software on your computer by running the INSTALL.EXE program on the floppy disk. The program files are copied and icons are created for them in the Windows Start Menu. 5) Ensure that JU1 is closed (Table 1). 6) Turn on the power supply. 7) Start the program by opening its icon in the Start Menu. The program prompts you to connect the C module and turn its power on. Slide SW1 to the ON position. Select the correct serial port, and click OK. The program will automatically load code into the module. 8) Click on Initialize MAX7432EVKIT to initialize the three devices on the MAX7432EVKIT board. 9) Connect video signal sources to video inputs INA1-INA6 and INB1-INB6. 10) Connect video displays to OUT1 through OUT3.
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Controlling the Devices
Select which chip to work with by picking it from the address assignment grid, or by dropping down the CEXT capacitor combo box. Set the command word drop-down combo boxes (SYNCIO, Input A/B, Filtered/Unfiltered, etc.). To write to a single device, click the Write button. To write to all devices, click the Broadcast button. To read back the device configuration, click the Read button. Read-back data appears underneath the combo boxes. The SYNCIO bit is only active on the MAX7428.
Detailed Description of Hardware
Master/Slave Synchronization
One MAX7428 can control the clamping on another MAX7428. First, assign unique chip addresses by clicking Initialize MAX7428EVKIT. Next, set the configuration word to "SYNCIO in" and click Broadcast. Finally, select the device that will be the master, and write configuration word with "SYNCIO out", and connect the sync signals together. This application is demonstrated on the MAX7428EVKIT. This configuration is typically used for Y-C or Y-Pb-Pr systems. It allows the sync information on Y (luma) to be sent to the other channels.
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MAX7432 Evaluation Kit Evaluates: MAX7428/MAX7430/MAX7432
Table 1. Jumper Functions
JUMPER JU1 POSITION Closed* FUNCTION U1, U2, U3 are powered by 5V from the 68HC16 module U1, U2, U3 require external 5V power source applied at terminal block TB1
JU1
Open
*Default configuration
Figure 1. MAX7432 EV Kit Software
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MAX7432 Evaluation Kit Evaluates: MAX7428/MAX7430/MAX7432
; Maxim Single Pin Bus Protocol used on MAX7432 (Excerpt) ; Complete source code is included on MAX7432 EVKIT disk. ; ; High-level GUI program sends commands to the MSPB code. ; On Entry: register Z points to null-terminated command string. ; On Exit: _readback contains the value read by the (R) bits. CmdWLoop: ldaa 0,z aiz #1 cmpa #0 beq CmdWDone ; Readback timing: ; From rising edge of prompt (0) to bus release: 1.0 us min, 2.3 us max ; Data valid window: 2.3 us to 4.7 us after rising edge of prompt ; From rising edge of prompt to bus assert: 4.7 us min, 13 us max cmpa #'R' bne CmdWNotR BCLR PDDR,#BitBangPin ; make data an input... ldaa GPTPDR BCLR GPTPDR,#DebugReadPin ; debug strobe ; shift msb into carry aslw _readback+2,y rolw _readback,y ; rotate carry into lsb anda #BitBangPin ; drive I/O high cmpa #0 beq CmdWRskip inc _readback+3,y CmdWRskip: BSET GPTPDR,#DebugReadPin ; debug strobe BSET GPTPDR,#BitBangPin ; drive I/O high BSET PDDR,#BitBangPin ; make sure data is an output bra CmdWLoop ; jump back to loop, process next character CmdWNotR: cmpa #'0' bne CmdWNot0 ldd #DoZeroTimingValue jsr DoPulse_D bra CmdWLoop ; jump back to loop, process next character CmdWNot0: cmpa #'1' bne CmdWNot1 ldd #DoOneTimingValue jsr DoPulse_D bra CmdWLoop ; jump back to loop, process next character CmdWNot1: cmpa #'2' bne CmdWNot2 ldd #DoWPTimingValue jsr DoPulse_D bra CmdWLoop ; jump back to loop, process next character CmdWNot2: cmpa #'A' bne CmdWNotA jsr EXECUTE_DELAY_A bra CmdWLoop ; jump back to loop, process next character CmdWNotA: cmpa #'B' bne CmdWNotB jsr EXECUTE_DELAY_B bra CmdWLoop ; jump back to loop, process next character CmdWNotB: cmpa #'H' bne CmdWNotH ; delay for 5 usec ldd #DoWH5usecTimingValue jsr DoPulseDly bra CmdWLoop ; jump back to loop, process next character CmdWNotH: bra CmdWLoop ; jump back to loop, process next character CmdWDone: rts
Listing 1. Simplified Interface 4 _______________________________________________________________________________________
MAX7432 Evaluation Kit Evaluates: MAX7428/MAX7430/MAX7432
C21 220F C28 OPEN C20 220F C27 OPEN VCC 10 C5 0.1F IN1B 3 R6 75 R7 75 C9 0.1F 7 OUT2 IN1A 1 R13 * R25 OPEN INA2 BNC
OUT3 BNC
U2 MAX7430
9 OUT1 IN2A 2
OUT2 BNC
C10 0.1F INA3 BNC R14 * R26 OPEN
VCC 4 R15 *
C11 0.1F INB2 BNC R27 OPEN
REXT
C2 0.01F
R2 301k 1% 8 IN2B GND R16 * DATA 6 DATA 5
C12 0.1F INB3 BNC R28 OPEN
*R13-R16 OPTIONAL (REFER TO MAX7432 DATA SHEET)
Figure 2a. MAX7432 EV Kit Schematic
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MAX7432 Evaluation Kit Evaluates: MAX7428/MAX7430/MAX7432
40-PIN FEMALE CONNECTOR J1-22 J1-21 J1-20 J1-19 J1-18 J1-17 J1-16 J1-15 J1-14 J1-13 J1-12 J1-11 J1-10 J1-9 J1-6 J1-5 J1-1 J1-2 VCC J1-3 FB1 J1-4 J1-7 J1-8 1 C25 10F 2 10V JU1 TB1-1 TB1-2 TERMINAL BLOCK N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. N.C. J1-23 VCC J1-24 J1-25 J1-26 J1-28 J1-29 J1-30 VCC J1-31 2 J1-32 J1-33 J1-34 7 J1-35 J1-36 J1-37 J1-38 J1-39 J1-40 C1 0.1F R1 301k 1% 4 GND SYNCIO 5 REXT OUT 8 R5 75 C4 0.1F VCC INB 3 R12 * R24 OPEN R11 * C8 0.1F R23 OPEN J1-27 DATA R4 10k C7 0.1F 6 DATA INA 1 INA1 BNC
U1 MAX7428
INB1 BNC C19 220F
OUT1 BNC C26 OPEN SYNCIO1
GND
FB2
*R11 AND R12 OPTIONAL (REFER TO MAX7432 DATA SHEET)
Figure 2b. MAX7432 EV Kit Schematic
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MAX7432 Evaluation Kit Evaluates: MAX7428/MAX7430/MAX7432
OUT6 BNC
C24 220F C31 OPEN
R10 75
9
OUT3
C13 0.1F
U3 MAX7432
IN1A
1 R17 * C15 0.1F R29 OPEN
INA4 BNC
OUT5 BNC
C23 220F C30 OPEN C22 220F C29 OPEN
R9 75
11
OUT2 IN2A 2 R19 *
INA5 BNC R31 OPEN C17 0.1F
OUT4 BNC
R8 75
13
OUT1 IN3A
3 R21 * R33 OPEN C14 0.1F
INA6 BNC
VCC 14 C6 0.1F
VCC IN1B
5 R18 * R30 OPEN C16 0.1F
INB4 BNC
12
REXT IN2B 6 R20 * GND GND IN3B 7 R22 *
C3 1000pF
R3 301k 1% 4 10
INB5 BNC R32 OPEN C18 0.1F INB6 BNC R34 OPEN
DATA
8
DATA
*R17-R22 OPTIONAL (REFER TO MAX7432 DATA SHEET)
Figure 2c. MAX7432 EV Kit Schematic
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MAX7432 Evaluation Kit Evaluates: MAX7428/MAX7430/MAX7432
1.0"
Figure 3. MAX7432 EV Kit Component Placement Guide--Component Side
1.0"
Figure 4. MAX7432 EV Kit PC Board Layout--Solder Side 8 _______________________________________________________________________________________
MAX7432 Evaluation Kit Evaluates: MAX7428/MAX7430/MAX7432
1.0"
Figure 5. MAX7433 EV Kit PC Board Layout--Component Side
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.
Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 _____________________ 9 (c) 2002 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.

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