MAX3674EVKIT+

19-4156; Rev 0; 5/08 EVALUATION KIT AVAILABLE MAX3674 Evaluation Kit The MAX3674 evaluation kit (EV kit) is a fully assembled and tested demonstration board that simplifies evaluation of the MAX3674 high-performance dual-output network clock synthesizer. The EV kit includes a 16MHz crystal and other hardware components necessary to evaluate all the MAX3674 functions. Software is provided that communicates with the EV kit through a USB port. The software provides an easy way to set operational modes and read/write internal registers. The EV kit is powered by a +3.3V supply and USB port. SMA connectors are used for the reference clock input and LVPECL clock outputs to simplify connection to test equipment. Two LEDs indicate the status of LOCK and USB power. Features ♦ Fully Assembled and Tested ♦ On-Board 16MHz Crystal Reference ♦ Software Control Through USB Port ♦ SMA Connectors for Clock I/Os ♦ Powered by +3.3V Supply and USB Port ♦ Indicators for LOCK and USB Power Ordering Information PART TYPE MAX3674EVKIT+ EV Kit +Denotes lead-free/RoHS-compliant. Component List DESIGNATION QTY DESCRIPTION C1, C2 2 33pF ±10% ceramic capacitors (0402) C3, C4 0 Not installed C5, C18, C20, C21, C22, C24, C26, C28, C29, C31, C33 11 C6, C34 DESIGNATION QTY DESCRIPTION J5 1 2 x 3 pin header (0.1in centers) Sullins PEC36SAAN J6, J7 2 Test points Keystone 5000 0.1μF ±10% ceramic capacitors (0603) J10–J13 4 SMA connectors, edge-mount, tab center Johnson 142-0701-851 2 22μF ±10% ceramic capacitors (1206) J17 1 SMA connector, PCB mount Johnson 142-0701-231 C7, C14, C41, C42 4 0.22μF ±10% ceramic capacitors (0402) L1 1 22μH ±20% inductor, 520mA Taiyo-Yuden CBC3225T220M C8, C9, C11, C12, C13, C40, C47, C48 8 0.1μF ±10% ceramic capacitors (0402) L2 1 4.7μH ±20% inductor, 870mA Taiyo-Yuden CBC3225T4R7M L4–L7 4 1 0.01μF ±10% ceramic capacitor (0402) Ferrite beads Murata BLM18HK102SN1 (0603) R1, R21 2 49.9
±1% resistors (0603) R2 1 10
±1% resistor (0603) R3 1 470
±1% resistor (0603) R4, R6–R11 7 4.75k
±1% resistors (0603) R5 1 1.5k
±1% resistor (0603) R12, R13, R22, R23 4 10k
±1% resistors (0603) C10 C15, C16, C19, C32 4 4.7μF ±10% ceramic capacitors (0805) 5 1μF ±10% ceramic capacitors (0603) C35 1 0.01μF ±10% ceramic capacitor (0603) D1, D2 2 LEDs, green Panasonic LN38GPX C17, C23, C25, C27, C30 J1 1 Mini USB connector, B type Tyco 1734035-1 R24 1 680
±1% resistor (0603) R25–R28 4 143
±1% resistors (0603) R34, R35 2 4.99k
±1% resistors (0603) ________________________________________________________________ Maxim Integrated Products 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. 1 Evaluates: MAX3674 General Description Evaluates: MAX3674 MAX3674 Evaluation Kit Component List (continued) DESIGNATION TP1–TP7, TP10 U1 QTY DESCRIPTION 8 Test points Keystone 5000 1 High-performance dual-output network clock synthesizer (48 LQFP) Microsemi MAX3674ECM+ Maxim MAX3674ECM+ DESIGNATION QTY DESCRIPTION U5 1 Buffer (5 SC-70) Fairchild NC7SV125P5X Y1 1 16.000MHz SMD crystal, 18pF Citizen HCM49-16.000MABJ-UT Y2 1 6.000MHz SMD crystal, 32pF ECS ECS-60-32-5PXDN-TR U2 1 Microcontroller (28 SO) Microchip PIC16C745-I/SO None 2 Shunts for J5 Sullins SSC02SYAN U3 1 Dual level translator (8 SOT23) Maxim MAX3373EEKA+ None 1 PCB: MAX3674 EV Kit+ Circuit Board, Rev A U4 1 I/O port expander (24 TQFN) Maxim MAX7312ATG+ Quick Start 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. 1) Install two shunts on jumper J5, both to the (L) position. This sets address pins ADR0 and ADR1 low. 2) Connect a +3.3V supply to VCC (J6) and GND (J7). Set the supply current limit to 200mA. 3) Connect the computer to the EV kit with a USB cable (A-Male to Mini-B-Male). LED D2 should switch on, indicating that USB power is detected. 4) To To download downloadthe thelatest latestversion versionof of the the EV EV kit software (MAX3674revX.zip), visitatthewww.microsemi.com. Maxim website at the Microsemi website www.maxim-ic.com/evkitsoftware. Uncompress the zip file to a local folderUncompress and run the the zip file to folder and run the installation installation filea local (setup.exe). Installation requires file (setup.exe). Installation requires administrative administrative rights and may also require Internet rights to and may also requiredrivers. Internet access to access download necessary download necessary drivers. 5) After installation is complete, follow this path to start the program: Start → All Programs → Maxim Integrated Products → MAX3674 Evaluation Kit 6) Press the Initialize / Test Communication button. The message box should report: USB Device Detected MAX3674 Detected MAX7312 Detected 7) Press the following buttons in this order: RESET → LOAD → READ. At this point, the LOCK output should be high (LED D1 on), indicating that the PLL is locked. 8) Set the values for P, NA, NB, and M to obtain the desired output frequency. 9) Press the LOAD button, followed by the READ button. 10) Connect the clock outputs (QA, QA, QB, QB) to test equipment with SMA cables. Terminate unused outputs. Windows is a registered trademark of Microsoft Corp. 2 _______________________________________________________________________________________ MAX3674 Evaluation Kit The MAX3674 EV kit simplifies evaluation by providing the hardware and software needed to evaluate all the MAX3674 functions. A microcontroller (Microchip PIC16C745) and I/O port expander (MAX7312) allow the user to set control pins and read/write registers with software. The on-board 16MHz crystal and integrated oscillator generate the PLL reference clock. Alternatively, an external clock source can be connected to the REF_CLK input to serve as the reference clock. LED D1 switches on when the LOCK output is high, indicating the PLL is locked. The microcontroller is powered by the USB port +5V supply. LED D2 switches on when USB power is detected. The MAX3674 and I/O port expander are powered by the +3.3V supply. The EV kit also includes the MAX3373 level translator that interfaces the I2C clock and data lines from the microcontroller to the MAX3674 and I/O port expander, and is powered by both supplies. The USB cable and +3.3V supply can be connected to the EV kit in any sequence. Master Reset It is recommended to press the RESET button after every power-up. LVPECL Clock Outputs The LVPECL clock outputs (QA, QA, QB, QB) have onboard bias-Ts that provide DC biasing and AC-couple the signal to allow direct connection to 50Ω-terminated test equipment. Unused outputs should be terminated to prevent reflections on the transmission lines. Reference Clock Input The REF_CLK input (J17) accepts sinusoidal or squarewave clocks with frequencies between 15MHz and 20MHz, and swings up to 3.3VP-P. This input has a 50Ω DC termination to ground and is AC-coupled to an onboard buffer. The buffer is used to square the clock signal applied to the REF_CLK input pin. I2C Slave Address Jumper J5 is used to set the two selectable address bits (ADR0 and ADR1). The EV kit software performs a search at power-up to determine which of the four possible slave addresses is being used. EV Kit Software The EV kit software provides an easy way to set operational modes and read/write internal registers (Figure 1). Refer to the MAX3674 data sheet for detailed descriptions of the MAX3674 functions and guidance on selecting dividers settings. Note that when the Programming Interface is set to I2C, the settings for dividers P, NA, NB, and M are configured within the MAX3674 after pressing the LOAD button. _______________________________________________________________________________________ 3 Evaluates: MAX3674 Detailed Description Evaluates: MAX3674 MAX3674 Evaluation Kit Figure 1. MAX3674 EV Kit Software 4 _______________________________________________________________________________________ _______________________________________________________________________________________ C30 1μF C2 33pF 1 2 6 5 4 3 2 1 C31 0.1μF C1 33pF Y2 6.0MHz I/O5 I/O4 I/O3 I/O2 I/O1 I/O0 C22 0.1μF 14 13 12 11 10 9 8 7 6 5 4 3 2 1 VCC U4 MAX7312 D- D+ RC6 RC7 VSS VDD RB0 RB1 RB2 RB3 RB4 RB5 RB6 RB7 R5 1.5kΩ U2 PIC16C745 C21 0.1μF VUSB RC2 RC1 RC0 OSC2 OSC1 VSS RA5 RA4 RA3 RA2 RA1 RA0 MCLR I/O11 I/O12 I/O13 I/O14 I/O15 AD0 15 16 17 18 19 20 21 22 23 24 25 26 27 28 13 14 15 16 17 18 C19 4.7μF R7 4.75kΩ LED D2 C20 0.1μF 1 R8 4.75kΩ R9 4.75kΩ TP2 CLK_STOPB R35 4.99kΩ VCC C18 0.1μF R10 4.75kΩ R34 C5 0.1μF 4.99kΩ C17 1μF R24 680Ω TP4 CLK_STOPA R1 49.9Ω J17 C15 4.7μF L1 22μH USB_PWR 2 SMAPCB REF_CLK C16 4.7μF VUSB TP6 VUSB R6 4.75kΩ 3 2 1 GND NC D+ D- VBUS VCC GND A OE Y VCC 4 5 J1 MINI-B USB R12 10kΩ U5 NC7SV125P5X 5 4 3 2 1 R11 4.75kΩ C6 22μF C48 0.1μF VCC R2 10Ω R13 10kΩ C25 1μF C4 OPEN C10 0.01μF R22 10kΩ C26 0.1μF C3 OPEN 9 8 7 6 5 4 3 2 1 5 VCC 12 11 C40 0.1μF C9 0.1μF 1 3 10 VCC VCC C29 0.1μF C8 0.1μF Y1 16.0MHz 1 2 R23 10kΩ VCC SCL SDA J5 XTAL2 XTAL1 CLK_STOPB CLK_STOPA GND REF_CLK SCL SDA I/O VL2 VL GND I/O VCC2 VCC REF_SEL VCC_PLL VCC GND BYPASS VCC 6 4 2 4 3 2 1 VCC I/O VCC1 VCC I/O VL1 THREE-STATE MAX3373 U3 43 20 C24 0.1μF U1 MAX3674 41 C23 1μF 5 6 7 8 VCC VUSB 38 VUSB 46 R4 4.75kΩ VCC 24 C27 1μF 37 TEST_EN LOCK GND QB QB VCC GND QA QA VCC NB VCC GND VUSB 23 AD2 I/O6 7 AD1 22 GND 9 I/O7 8 INT 21 V+ I/O8 10 19 SCL SDA I/O9 11 48 P VCC 13 I/O10 12 47 ADR0 M0 14 45 ADR1 15 M1 44 SCL M2 16 SDA 17 MR M4 18 M3 42 VCC GND 19 40 PLOAD 20 M5 39 NA0 M6 21 NA1 M7 22 NA2 M8 23 M9 24 25 26 27 28 29 30 31 32 33 34 35 36 TP3 TP5 LED D1 1 2 LOCK R3 470Ω LOCK TP7 C35 0.01μF VCC C47 0.1μF C13 0.1μF C12 0.1μF C11 0.1μF VCC C28 0.1μF VCC TP10 R27 143Ω L7 FERRITE BEAD L5 FERRITE BEAD R25 143Ω TP1 C33 0.1μF C32 4.7μF R28 143Ω L6 FERRITE BEAD C42 0.22μF C41 0.22μF C14 0.22μF J13 J12 J11 L4 FERRITE BEAD C7 0.22μF J10 R26 143Ω L2 4.7μH SMA QB SMA QB SMA QA SMA QA C34 22μF J7 J6 GND VCC Evaluates: MAX3674 VCC MAX3674 Evaluation Kit Figure 2. MAX3674 EV Kit Schematic 5 Evaluates: MAX3674 MAX3674 Evaluation Kit Figure 3. MAX3674 EV Kit Component Placement Guide—Component Side 6 _______________________________________________________________________________________ MAX3674 Evaluation Kit Evaluates: MAX3674 Figure 4. MAX3674 EV Kit PCB Layout—Component Side _______________________________________________________________________________________ 7 Evaluates: MAX3674 MAX3674 Evaluation Kit Figure 5. MAX3674 EV Kit PCB Layout—Ground Plane 8 _______________________________________________________________________________________ MAX3674 Evaluation Kit Evaluates: MAX3674 Figure 6. MAX3674 EV Kit PCB Layout—Power Plane _______________________________________________________________________________________ 9 Evaluates: MAX3674 MAX3674 Evaluation Kit Figure 7. MAX3674 EV Kit PCB Layout—Solder Side 10 _____________________________________________________________________________________ Microsemi Corporation (NASDAQ: MSCC) offers a comprehensive portfolio of semiconductor solutions for: aerospace, defense and security; enterprise and communications; and industrial and alternative energy markets. Products include high-performance, high-reliability analog and RF devices, mixed signal and RF integrated circuits, customizable SoCs, FPGAs, and complete subsystems. Microsemi is headquartered in Aliso Viejo, Calif. Learn more at www.microsemi.com. Microsemi Corporate Headquarters One Enterprise, Aliso Viejo CA 92656 USA Within the USA: +1 (949) 380-6100 Sales: +1 (949) 380-6136 Fax: +1 (949) 215-4996 © 2012 Microsemi Corporation. All rights reserved. Microsemi and the Microsemi logo are trademarks of Microsemi Corporation. All other trademarks and service marks are the property of their respective owners.