19-2360; Rev 0; 3/02 MAX7432 Evaluation Kit 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 µC-based systems. Features ♦ Proven PC Board Layout ♦ Convenient On-Board Test Points ♦ Fully Assembled and Tested Ordering Information PART TEMP RANGE MAX7432EVKIT 0°C to +70°C User-Supplied MAX7432EVC16 0°C to +70°C Windows Software Windows is a registered trademark of Microsoft Corp. MAX7432EVC16 Parts List QTY PART 1 MAX7432EVKIT 1 68HC16MODULE-DIP INTERFACE TYPE Component Supplier SUPPLIER PHONE Sanyo USA 619-661-6835 FAX WEBSITE 619-661-1055 www.sanyo.com Note: When contacting, please specify that you are using the MAX7428/MAX7430/MAX7432. Component List REFERENCE QTY DESCRIPTION REFERENCE QTY DESCRIPTION C1, C4–C18 16 0.1µF, 10V X7R ceramic capacitors (0805) R5–R10 6 75Ω ±1% surface-mount resistors (1206) C2 1 0.01µF, 10V X7R ceramic capacitor (0805) R11–R22 12 1MΩ ±5% surface-mount resistors (1206) C3 1 1000pF, 10V X7R ceramic capacitor (0805) R23–R34 0 Open (reserved for 75Ω ±5% surfacemount resistors) 1 0.200in. screw terminal block 6 220µF, 6V aluminum electrolytic capacitors (8 x 10.5), Sanyo 6CV220EX TB1 C19–C24 U1 1 Maxim MAX7428EKA C25 1 10µF, 10V tantalum capacitor (B) U2 1 Maxim MAX7430EUB U3 1 Maxim MAX7432EUD None 1 PC board, MAX7432 EV kit None 1 3 1/2in. software disk, MAX7432 EV kit None 1 MAX7428 data sheet None 1 MAX7430 data sheet None 1 MAX7432 data sheet None 1 MAX7432 EV kit data sheet None 1 68HC16MODULE-DIP data sheet C26–C31 6 Open (reserved for Sanyo 4CV820EX) FB1, FB2 2 Ferrite beads (0805) Murata BLM21A102S INA1–INA6, INB1–INB6, OUT1–OUT6 18 J1 1 2 x 20 right-angle socket JU1 1 2-pin header R1, R2, R3 3 301kΩ ±1% surface-mount resistors (1206) R4 1 10kΩ ±5% surface-mount resistor (1206) BNC female jacks, 4 pin, 0.250in. spacing ________________________________________________________________ Maxim Integrated Products 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. 1 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 ® 98/2000 software provides a handy-user interface to exercise the features of the MAX7428/MAX7430/ MAX7432. Evaluates: MAX7428/MAX7430/MAX7432 MAX7432 Evaluation Kit Recommended Equipment 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. Before you begin, you will need the following equipment: • Maxim MAX7432EVKIT and 68HC16MODULE interface board Detailed Description of Software Quick Start • 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 1) With the power off, connect a 7V to 20V DC power supply to the µC module at the terminal block located next to the on/off switch, along the top edge of the µC 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 µC 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 µC 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. 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. 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. 10) Connect video displays to OUT1 through OUT3. 2 _______________________________________________________________________________________ MAX7432 Evaluation Kit Evaluates: MAX7428/MAX7430/MAX7432 Table 1. Jumper Functions JUMPER POSITION FUNCTION JU1 Closed* U1, U2, U3 are powered by 5V from the 68HC16 module JU1 Open U1, U2, U3 require external 5V power source applied at terminal block TB1 *Default configuration Figure 1. MAX7432 EV Kit Software _______________________________________________________________________________________ 3 Evaluates: MAX7428/MAX7430/MAX7432 MAX7432 Evaluation Kit ; 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 7 OUT2 BNC IN1A OUT2 C28 OPEN 1 R6 75Ω INA2 BNC R13 * U2 C20 220µF MAX7430 9 IN2A 2 INA3 BNC R14 * VCC 10 VCC IN1B 3 4 INB2 BNC R15 * REXT R2 301kΩ 1% 8 R27 OPEN C12 0.1µF IN2B 5 INB3 BNC GND R16 * 6 R26 OPEN C11 0.1µF C5 0.1µF DATA R25 OPEN C10 0.1µF OUT1 C27 OPEN C2 0.01µF Evaluates: MAX7428/MAX7430/MAX7432 OUT3 BNC C9 0.1µF R7 75Ω C21 220µF R28 OPEN DATA *R13–R16 OPTIONAL (REFER TO MAX7432 DATA SHEET) Figure 2a. MAX7432 EV Kit Schematic _______________________________________________________________________________________ 5 Evaluates: MAX7428/MAX7430/MAX7432 MAX7432 Evaluation Kit 40-PIN FEMALE CONNECTOR J1–22 N.C. J1–23 J1–21 N.C. J1–24 J1–20 N.C. J1–25 J1–19 N.C. J1–26 J1–18 N.C. J1–28 J1–17 N.C. J1–29 J1–16 N.C. J1–30 J1–15 N.C. J1–31 J1–14 N.C. J1–32 J1–13 N.C. J1–33 VCC R4 10kΩ J1–27 C7 0.1µF DATA 6 INA DATA 1 INA1 BNC R11 * VCC C8 0.1µF 2 J1–12 N.C. J1–34 J1–11 N.C. J1–35 J1–10 N.C. J1–36 J1–9 N.C. J1–37 J1–6 N.C. J1–38 J1–5 N.C. J1–39 3 INB1 BNC R12 * OUT R24 OPEN C19 220µF R5 75Ω REXT 8 R1 301kΩ 1% OUT1 BNC C26 OPEN 4 N.C. INB U1 MAX7428 7 J1–1 VCC C4 0.1µF C1 0.1µF R23 OPEN GND SYNCIO 5 SYNCIO1 GND J1–40 J1–2 VCC J1–3 FB1 J1–4 JU1 J1–7 FB2 J1–8 TB1–1 1 C25 10µF 2 10V TB1–2 TERMINAL BLOCK *R11 AND R12 OPTIONAL (REFER TO MAX7432 DATA SHEET) Figure 2b. MAX7432 EV Kit Schematic 6 _______________________________________________________________________________________ MAX7432 Evaluation Kit R10 75Ω C24 220µF 9 C13 0.1µF OUT3 C31 OPEN U3 IN1A 1 R9 75Ω C23 220µF 11 IN2A 2 INA5 BNC R19 * R8 75Ω C22 220µF R29 OPEN C15 0.1µF OUT2 C30 OPEN OUT4 BNC INA4 BNC R17 * MAX7432 OUT5 BNC 13 R31 OPEN C17 0.1µF OUT1 IN3A C29 OPEN 3 INA6 BNC R21 * VCC 14 R33 OPEN C14 0.1µF VCC IN1B C6 0.1µF 5 INB4 BNC R18 * 12 4 10 IN2B 8 6 INB5 BNC R20 * GND DATA R32 OPEN C18 0.1µF GND IN3B DATA R30 OPEN C16 0.1µF REXT R3 301kΩ 1% C3 1000pF Evaluates: MAX7428/MAX7430/MAX7432 OUT6 BNC 7 INB6 BNC R22 * R34 OPEN *R17–R22 OPTIONAL (REFER TO MAX7432 DATA SHEET) Figure 2c. MAX7432 EV Kit Schematic _______________________________________________________________________________________ 7 Evaluates: MAX7428/MAX7430/MAX7432 MAX7432 Evaluation Kit 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 © 2002 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.