19-2968; Rev 0, 8/03 MAX3983 Evaluation Kit _________________________ Features The MAX3983 evaluation kit (EV Kit) is an assembled demonstration board that provides electrical evaluation of the MAX3983 Quad Copper Cable Signal Conditioner. The EV Kit also includes a calibration strip for accurate measurements. ♦ Fully Assembled and Tested ♦ Easy Selection of Operating Modes ♦ Equipped with a 4X InfiniBand Cable Connector ____________________ Component List DESIGNATION QTY DESCRIPTION C1-C32, C35C44 42 0.01µF ±5% ceramic capacitors (0402) C33 1 33µF tantalum capacitor 4 0.1µF ±5% ceramic capacitors (0402) C34, C45, C46, C49 C47, C48, C50, C51 J1-J18 4 Not Installed 18 SMA connectors, edge mount JP1, JP2, JP8, JP9, JP12 JP3 5 2-pin headers, 0.1in centers 1 3-pin header, 0.1in centers JP5 1 3-pin + 1-pin header, 0.1in centers JP10, JP11 2 Not Installed L1 1 4.7µH Inductor Coilcraft DS1608C-472 P1 1 R1-R8 8 R10 - R18 9 Not Installed TP1-TP11 11 Test points Digi-Key 5000K-ND U1 1 U2 1 ______________ Ordering Information PART MAX3983EVKIT TEMP. RANGE 0°C to +85°C IC PACKAGE 68 QFN ______________Component Suppliers SUPPLIER PHONE FAX AVX 843-448-9411 843-448-1943 Coilcraft 847-639-6400 847-639-1469 Digi-Key 218-681-6674 218-681-3380 Murata 770-436-1300 770-436-3030 Note: Please indicate that you are using the MAX3983 when ordering from these suppliers. ________________________ Quick Start 1) Connect a +3.3V supply to the 3.3V terminal and ground to the GND terminal. 4x IB Connector FCI 58369111120 or 58369-112110 2) Disable system loopback by LOOPBACK shunt at jumper JP9. 4.7kΩ ±5% resistors (0402) 3) Remove shunts at jumpers JP3 and JP5 to enable TX and RX. 4) Install shunt at jumper JP2 to VCC to provide +3.3V to the SD pullup resistors. MAX3983UGK 68-QFN* 5) OR Gate Fairchild NC7S32P5X SC70 Apply 2.5Gbps to 3.2Gbps data to TX_IN[1:4] (J9 - J16). 6) None MAX3983 evaluation circuit board, rev A Apply 2.5Gbps to 3.2Gbps data to RX_IN[1:4] through a 1m to 5m InfiniBand 4X cable assembly. 7) None MAX3983 data sheet Connect data outputs RX_OUT[1:4] to a 50 ohmterminated oscilloscope to monitor RX_IN[1:4] data, and/or connect TX_OUT[1:4] to a 50 ohm-terminated oscilloscope through a 1m to 15m InfiniBand 4X cable assembly to monitor TX_IN[1:4] data. 8) Adjust TX pre-emphasis with jumpers JP1 and JP12, and adjust RX pre-emphasis with JP8 (see Jumper Descriptions). *Note: U1 has an exposed pad which requires it to be solder attached to the circuit board to insure proper functionality of the part. installing _________________________________________________________________Maxim Integrated Products the 1 For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800 For small orders, phone 1-800-835-8769 Evaluates: MAX3983 ________________ General Description MAX3983 Evaluation Kit Evaluates: MAX3983 __________________________________________________________________ _Jumper NAME TYPE TX_PE1 (JP1) 2-pin header TX_PE0 (JP12) 2-pin header RX_PE (JP8) 2-pin header LOOPBACK (JP9) 2-pin header PULLUP (JP2) 2-pin header SHUNT POSITION OPEN Enables most-significant bit of TX pre-emphasis control SHUNT (GND) Disables most-significant bit of TX pre-emphasis control OPEN Enables least-significant bit of TX pre-emphasis control SHUNT (GND) Disables least-significant bit of TX pre-emphasis control Sets RX pre-emphasis to 6dB SHUNT (GND) Sets RX pre-emphasis to 3dB OPEN SHUNT (GND) OPEN SHUNT (VCC) 3-pin header TX_AUTO_EN TX_DISABLE OPEN RX_AUTO_EN RX_ENABLE (JP5) 3-pin + 1-pin header DESCRIPTION OPEN OPEN TX_ENABLE (JP3) Descriptions RX_DISABLE Enables loopback from TX_IN[1:4] to RX_OUT[1:4] Disables loopback Allows external voltage (3.0V to 5.5V) applied at VPULLUP pin as SD resistor pullup voltage Sets Vcc as the SD resistor pullup voltage Enables the TX section of the MAX3983 Enables auto-detection in the TX section, when EV board is set up in the Auto-Detect configuration. See Auto-Detect Configuration in Detailed Description. Disables the TX section of the MAX3983 Enables the RX section of the MAX3983 Enables auto-detection in the RX section when EV board is set up in the Auto-Detect configuration. See Auto-Detect Configuration in Detailed Description. Disables the RX section of the MAX3983 Sets RX_ENABLE high whenever LOOPBACK or all of RX_SD[1:4] are high when EV board is set up in the Auto-Detect configuration. See Auto-Detect Configuration in Detailed Description. _______________Detailed Description Auto-Detect Configuration Embedded Stripline The MAX3983 Evaluation Kit is shipped with each signal detect (SD) separated. In order for the MAX3983 to automatically detect an incoming signal and enable the corresponding output, these SD outputs need to be connected together. The MAX3983 Evaluation Kit has approximately 2.5 inches of 4mil-wide FR4 stripline on the cable side inputs and outputs. This provides 2dB of loss at 3GHz, which slows the output transition times of the MAX3983 to approximately 60ps. To configure the board for auto-detection on the RX side, solder four 0Ω 0402 resistors in R14 - R17 and remove R6, R7, and R8. Jumper JP5 then enables RX auto-detect (see Jumper Descriptions). If slower transition times are desired, the MAX3983 Evaluation Kit provides a connection for 0402 capacitors across the TX outputs. To achieve about 100ps (20%-80%) edges, solder 1.5pF capacitors for C47, C48, C50, and C51. To configure the board for auto-detection on the TX side, solder four 0Ω 0402 resistors in R10 - R13 and remove R2, R3, and R4. Jumper JP3 then enables TX auto-detect (see Jumper Descriptions). 2 _________________________________________________________________________________________ GND 3.3V C49 0.1µF L1 4.7µH TX_IN4+ TX_IN4- TX_IN3+ TX_IN3- TX_IN2+ TX_IN2- TX_IN1+ TX_IN1- C33 33µF J18 J17 VCC C45 0.1µF J16 J15 J14 J13 J12 J11 J10 J9 JP11 JP10 C36 0.01µF C35 0.01µF C27 0.01µF C25 0.01µF C44 0.01µF C43 0.01µF C42 0.01µF C41 0.01µF C40 0.01µF C39 0.01µF C38 0.01µF C37 0.01µF C29 0.01µF C26 0.01µF C30 0.01µF C28 0.01µF C31 0.01µF C32 0.01µF VCCRX VCCTX TP11 GND TP9 VCCRX TP10 VCCTX 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 TX_SD4 TX_SD3 VCC1 TX_IN4+ TX_IN4- GND TX_IN3+ TX_IN3- GND TX_IN2+ TX_IN2- GND TX_IN1+ TX_IN1- VCC1 TX_SD2 TX_SD1 R18 OPEN 66 VCCTX VCCRX 0.01µF 0.01µF 0.01µF 65 VCCRX C19 C18 C17 63 LOOPBACK EP* TX_ENABLE VCCTX VCCTX JP9 J3 J2 J1 62 LOOPBACK JP8 18 VCCTX VCCRX 0.01µF C20 J4 U1 MAX3983 0.01µF C21 J5 RX_OUT3- VCCTX C51 C50 C48 C47 0.01µF C24 VCCRX NOT INSTALLED NOT INSTALLED NOT INSTALLED NOT INSTALLED VCCTX J8 RX_OUT4+ RX_ENABLE 0.01µF C23 J7 RX_OUT4- RX_SD1 JP12 TX_PE0 TX_PE1 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 JP1 RX_SD4 RX_SD3 VCC3 RX_IN4- RX_IN4+ GND RX_IN3- RX_IN3+ GND RX_IN2- RX_IN2+ GND RX_IN1- RX_IN1+ VCC3 RX_SD2 *EP = EXPOSED PAD, SOLDERED TO GROUND VCCTX VCCRX 0.01µF C22 J6 RX_OUT3+ 55 RX_OUT2+ 59 RX_PE 68 LOOPBACK TX_ENABLE 67 19 RX_PE N.C. 20 VCC4 VCC2 64 RX_OUT1TX_OUT1+ 21 RX_OUT1+ TX_OUT122 VCC4 VCC2 23 RX_OUT2- 61 25 TX_OUT2- 54 RX_OUT2- 26 TX_OUT2+ 24 RX_OUT2+ 60 VCC4 VCC2 58 RX_OUT3TX_OUT3+ 27 RX_OUT3+ 57 29 TX_OUT328 VCC4 VCC2 56 30 RX_OUT4TX_OUT4+ 31 RX_OUT4+ TX_OUT4- 52 RX_ENABLE 53 VCC4 VCC2 32 POR TX_PE0 33 TX_PE1 34 RX_OUT1+ CPOR VCCRX VCCRX C34 0.1µF C15 0.01µF C16 0.01µF C13 0.01µF C14 0.01µF C11 0.01µF C12 0.01µF C9 0.01µF C10 0.01µF C7 0.01µF C8 0.01µF C5 0.01µF C6 0.01µF C3 0.01µF C4 0.01µF C1 0.01µF C2 0.01µF TX_OUT1 TX_OUT2 TX_OUT3 TX_OUT4 RX_IN4 RX_IN3 RX_IN2 RX_IN1 R16 OPEN R17 OPEN LOOPBACK R7 4.7kΩ R8 4.7kΩ R15 OPEN R6 4.7kΩ 2 1 R12 OPEN R3 4.7kΩ S16 S15 S14 S13 S12 S11 S10 S9 S8 S7 S6 S5 S4 S3 S2 S1 G9 G8 G7 G6 G5 G4 G3 G2 G1 RX_ENABLE JP3 C46 0.1µF TX_ENABLE TX_DISABLE TP4 TX_SD4 TP3 TX_SD3 TP2 TX_SD2 TP1 TX_SD1 TP8 RX_SD4 TP7 RX_SD3 TP6 RX_SD2 TP5 RX_SD1 TX_AUTO_EN R10 OPEN R1 4.7kΩ RX_DISABLE R11 OPEN R2 4.7kΩ P1 FCI 58369-111120 OR FCI 58369-112110 JP5 RX_AUTO_EN 4 R13 OPEN R4 4.7kΩ U2 NC7S32P5X R14 OPEN R5 4.7kΩ VPULLUP JP2 VCC Evaluates: MAX3983 RX_OUT1- MAX3983 Evaluation Kit Figure 1. MAX3983 EV Kit Schematic _________________________________________________________________________________________ 3 Evaluates: MAX3983 MAX3983 Evaluation Kit Figure 2. MAX3983 EV Kit Component Placement Guide – Component Side 4 _________________________________________________________________________________________ MAX3983 Evaluation Kit Evaluates: MAX3983 Figure 3. MAX3983 EV Kit PC Board Layout – Component Side (Signal), Layer 1 _________________________________________________________________________________________ 5 Evaluates: MAX3983 MAX3983 Evaluation Kit Figure 4. MAX3983 EV Kit PC Board Layout – Ground Plane, Layer 2 6 _________________________________________________________________________________________ MAX3983 Evaluation Kit Evaluates: MAX3983 Figure 5. MAX3983 EV Kit PC Board Layout – Signal, Layer 3 _________________________________________________________________________________________ 7 Evaluates: MAX3983 MAX3983 Evaluation Kit Figure 6. MAX3983 EV Kit PC Board Layout – Ground Plane, Layer 4 8 _________________________________________________________________________________________ MAX3983 Evaluation Kit Evaluates: MAX3983 Figure 7. MAX3983 EV Kit PC Board Layout – Power Plane, Layer 5 _________________________________________________________________________________________ 9 Evaluates: MAX3983 MAX3983 Evaluation Kit Figure 8. MAX3983 EV Kit PC Board Layout – Bottom (Signal), Layer 6 Maxim makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Maxim assume any liability arising out of the application or use of any product or circuit and specifically disclaims any and all liability, including without limitation consequential or incidental damages. “Typical” parameters can and do vary in different applications. All operation parameters, including “typicals” must be validated for each customer application by customer’s technical experts. Maxim products are not designed, intended or authorized for use as components in systems intended for surgical implant into the body, or other applications intended to support or sustain life, or for any other application in which the failure of the Maxim product could create a situation where personal injury or death may occur. 10 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 2000 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products