ADT7466 EVAL-ADT7466EB ADG714 NDT3055T 2N3906 CY7C68013-CSP PB7/FD15 PB6/FD14 - Datasheet Archive

 

EVAL-ADT7466EB OBJECTIVE This evaluation board allows the input and output functions of the ADT7466 to be demonstrated without

 

ADT7466 ADT7466 Evaluation Board EVAL-ADT7466EB EVAL-ADT7466EB OBJECTIVE This evaluation board allows the input and output functions of the ADT7466 ADT7466 to be demonstrated without the need for external components. The software allows control and monitoring of the ADT7466 ADT7466's internal registers. Using the evaluation board and its accompanying software, the ADT7466 ADT7466 can be interfaced to any PC running Windows® XP, Windows® 2000, and Windows® Millennium via the USB port. EVALUATION BOARD HARDWARE The evaluation board contains an ADT7466 ADT7466, thermistors, remote transistors for temperature sensing, fans and fan drive circuitry, SPI® switches for different configurations, and indicator LEDs. It also contains on-board heaters so a complete thermal environment may be simulated. The evaluation board is connected to the computer via the USB port. The ADT7466 ADT7466 evaluation board and fans are powered from the USB port. An external power supply is only needed for the on-board heaters. The parameter setup is divided into four categories. Each parameter may be checked to apply the easy setup value or unchecked to leave the default value. A full list of registers and default values is available in the ADT7466 ADT7466 data sheet. General: Enables the part monitoring. Limits: Sets temperature, fan, VCC, and THERM limits. Fan Setup: Sets fan parameters as well as the thermistor monitoring configuration. Control Setup: Sets automatic fan control (AFC) parameters. After easy setup, all parameters may be changed in either the visual display or control dialog box, or directly at register level in the register access dialog box. LED D4 indicates that the evaluation board is powered on. LED D6 indicates that the heater supply is connected to the board. LED D3 is turned on when the ALERT pin of the ADT7466 ADT7466 is asserted. The part powers up in thermistor monitoring mode. On the evaluation board, the thermistors are connected to the ADT7466 ADT7466 via SPI switches. The switches are open by default; therefore, the ALERT LED remains illuminated until the easy setup function closes the switches. LED D1 is connected to the multifunction Pin 7 (FAN1_ON/PROCHOT/THERM). The LED remains on after power-up until Fan1 starts spinning. LED D2 indicates when a fan has stalled or failed to spin up. USING THE SOFTWARE When using the software, first ensure the evaluation board is connected to the USB port. Easy Setup The software includes an easy setup function that sets the parameters required to configure the ADT7466 ADT7466 and evaluation board. The easy setup button is in the visual display window. 05426-001 Indicator LEDs Figure 1. Select Parameters for Easy Setup Dialog Box Visual Display Dialog Box The current temperature and fan speed are plotted in the Visual Display dialog box. Selected parameters may also be displayed on a bar graph on the left side of this box. Adjusting the sliders on the bar graph changes the limits of the displayed function. A red button indicates an out-of-limit condition, and the ALERT LED on the evaluation board also illuminates. Rev. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. www.analog.com Tel: 781.329.4700 Fax: 781.461.3113 ©2005 Analog Devices, Inc. All rights reserved. EVAL-ADT7466EB EVAL-ADT7466EB 05426-002 The software allows control of the parameters in the Fan Configuration dialog box without accessing individual registers. There are also specific automatic fan control tabs that plot the AFC settings and predict the fan speed vs. the temperature. Figure 2. Visual Display The Options dialog box allows you to reconfigure the device and evaluation board setup without writing to individual registers. This allows simple control for configuring the multifunctional pins. For example, Pin 11 and Pin 12 may be used as a second remote diode input, thermistor inputs, or analog inputs. This controls the register settings and state of the switches on the evaluation board for the different configurations. 05426-004 Options Dialog Box Figure 4. Fan Configuration The on-board heater function allows control of the heaters on the evaluation board, which determines the remote and thermistor temperatures, respectively. This function may be used in association with the AFC to increase the fan speed by increasing the temperature in the remote channels. An external 12 V power supply is needed for this function. Register Access Dialog Box 05426-003 Each register can be individually read and written to using the Register Access dialog box. This also allows you to look at the registers' settings that correspond to specific configurations. The registers are grouped according to functionality. Figure 3. Options Fan configurations may also be controlled. 05426-005 To use automatic fan control (AFC), the following parameters must be set: · Which temperature controls which fan Figure 5. Register Access · Fan start voltage · Minimum fan speed See the ADT7466 ADT7466 data sheet for more information and a full register map. · Maximum fan speed ORDERING GUIDE · Operating temperature range Model EVAL-ADT7466EB EVAL-ADT7466EB Rev. 0 | Page 2 of 8 Package Description Evaluation Board EVAL-ADT7466EB EVAL-ADT7466EB 05426-006 EVALUATION BOARD SCHEMATICS Figure 6. EVAL-ADT7466EB EVAL-ADT7466EB Silkscreen Rev. 0 | Page 3 of 8 Figure 7. EVAL-ADT7466EB EVAL-ADT7466EB Schematic Rev. 0 | Page 4 of 8 05426-007 19 D8 U5-H ADG714 ADG714 U5-G ADG714 ADG714 U5-F ADG714 ADG714 17 D7 D1 DGND S8 20 S7 18 S6 16 RED THERM S1 1 4 DGND R1 1k 15 D6 3.3V 3.3V SCLK DIN R2 1k C1 + C2 RED D2 J6-8 J6-7 3.3V 2 1 SYNC DOUT RESET ADG714 ADG714 DIN SCLK U5-1 8 7 6 5 4 3 2 1 22 23 24 3.3V ALERT SDA SCL DOUT SYNC U4 D1­ D1+ AIN1/TH1/D2­ AIN2/TH2/D2+ REFOUT F1_ON/PHOT THERM FAN_LOCK VCC GND TACH2 DRIVE2 TACH1 DRIVE1 FAN_LOCK DGND TACH2 DRIVE2 TACH1 DRIVE1 THERM J6-6 J6-5 J6-4 J6-3 J6-2 J6-1 9 10 11 12 13 14 15 16 13 D5 D1 U5-E C E 12V R18 10k U5-A U5-B U5-C U5-D D4 12 D3 10 D2 8 D1 6 J1-1 D1­ HEAT_CONTROL1 11 S4 ADG714 ADG714 9 S3 ADG714 ADG714 7 S2 ADG714 ADG714 5 S1 ADG714 ADG714 C E Q1 R20 DGND DGND R27 10k R19 DGND HEAT_CONTROL2 Q3 NDT3055T NDT3055T R24 47R 12V Q2 2N3906 2N3906 B TO BE PLACED UNDER R35 NDT3055T NDT3055T R5 47R J1-2 D1+ Q4 Q1 J1-5 J1-6 ALERT J1-3 D2­ ALERT D3 RED LED R3 1k 3.3V J1-4 D2+ S5 14 2N3906 2N3906 B ADG714 ADG714 SDA SCL J1-7 SDA U1 ADT7466 ADT7466_SOCKET J1-8 SCL TH2 TO BE PLACED UNDER R5 TH1 EVAL-ADT7466EB EVAL-ADT7466EB 05426-008 C5 0.1µF 3.3V C6 0.1µF J7 USB 6 5 4 3 2 C7 0.1µF SH SH GND D+ D­ VCC C8 0.1µF 5VUSB 1 + C19 0.1µF ALERT C20 0.1µF THERM C21 0.1µF C9 0.1µF R12 100k FAN_LOCK C4 10µF 10V R13 100k 3.3V C23 2.2µF 10V 1 RDY0/*SLRD 2 RDY1/*SLWR 33 PA0/INT0 34 PA1/INT1 35 PA2/*SLOE 36 PA3/*WU2 37 PA4/FIFOADR0 38 PA5/FIFOADR1 39 PA6/*PKTEND 40 PA7/*FLD/SLCS 13 IFCLK 14 RSVD U3 3.3V CY7C68013-CSP CY7C68013-CSP CLKOUT 9 D­ 8 D+ 54 42 RESET 44 *WAKEUP R16 10k + 3 3.3V C18 0.1µF R11 OR 55 3.3V AGND 6 27 GND 10 GND 12 AVCC 7 VCC 11 VCC 17 VCC 32 VCC 43 VCC GND 26 PB7/FD15 PB7/FD15 PB6/FD14 PB6/FD14 PB5/FD13 PB5/FD13 PB4/FD12 PB4/FD12 PB3/FD11 PB3/FD11 PB2/FD10 PB2/FD10 PB1/FD9 PB0/FD8 PB7/FD7 PB6/FD6 PB5/FD5 PB4/FD4 PB3/FD3 PB2/FD2 PB1/FD1 PB0/FD0 XTALIN XTALOUT SCL SDA CTL2/*FLAGC CTL1/*FLAGB CTL0/*FLAGA GND VCC GND 28 VCC GND 41 GND Rev. 0 | Page 5 of 8 53 Figure 8. EVAL-ADT7466EB EVAL-ADT7466EB USB Communication Circuit Schematic 56 C17 22pF WP SCL SDA A1 A2 VSS U2 VCC A0 24LC64 24LC64 5 6 7 8 3.3V Y1 24MHz SDA VERSION 2 SYNC SCLK DIN DOUT HEAT_CONTROL2 HEAT_CONTROL1 4 3 2 1 P1 R10 30k R21 90k 12V 3.3V 3.3V R15 2.2k 3.3V R14 2.2k 3.3V J5-2 J5-1 J5-3 48 47 46 45 25 24 23 22 21 20 19 18 3.3V C22 0.1µF 5 4 16 15 31 29 30 C10 22pF SCL 50 51 52 J5-4 49 EVAL-ADT7466EB EVAL-ADT7466EB EVAL-ADT7466EB EVAL-ADT7466EB T1 12V 3.3V ADP3303 ADP3303­3.3 D8 8 C12 0.33µF 35V J10-2 J10-2 T4 5VUSB J8-1 J10-1 J10-1 T3 + R5 4.7k + D6 GREEN 12V J8-2 IN1 7 IN2 5 SD C13 10µF C3 0.1µF OUT1 1 2 OUT2 6 ERROR 3 NR GND 4 U8 + C15 0.1µF C14 10µF 6.3V R24 1k D4 GREEN 3.3V C16 0.1µF 05426-009 12V(IN) T2 Figure 9. EVAL-ADT7466EB EVAL-ADT7466EB Power Circuit Schematic FAN 2 DRIVE CIRCUITRY 3.3V J9-1 FAN 2 CONNECTOR 5V FAN R8 10k J9-2 TACH1 J9-3 U6-A 3 J2-1 R17 10k J2-2 TACH2 J2-3 U6-B 5 DRIVE1 1 DRIVE2 7 R22 100k 2 D7 3.3V R23 100k 6 AD8532 AD8532 D5 AD8532 AD8532 5VUSB R4 12k C11 0.1µF R26 10k U6-C V+ V­ R7 12k R9 10k 8 4 AD8532 AD8532 Figure 10. EVAL-ADT7466EB EVAL-ADT7466EB Fan Drive Schematic Rev. 0 | Page 6 of 8 05426-010 FAN 1 CONNECTOR 5V FANN FAN 1 DRIVE CIRCUITRY EVAL-ADT7466EB EVAL-ADT7466EB NOTES Rev. 0 | Page 7 of 8 EVAL-ADT7466EB EVAL-ADT7466EB NOTES ©2005 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. EB05426 EB05426­0­4/05(0) Rev. 0 | Page 8 of 8