SMSC EVB-EMC2101 User's Manual
Contents
1. terminal of the remote diode and Pin 3 to the remote terminal of the remote diode Make sure a common ground exists between the remote diode GPU etc and the EMC2101 EVB Also ensure that the remote diode is properly biased according to the diode manufacture Table 3 5 Remote Diode Configurations CONFIGURATION JUMPER PIN 1 PIN 2 PIN 3 PIN 4 On board diode Q11 JP9 short DP short DN Off board diode CPU JP9 remote DP open remote DN open GPU etc On board diode Q12 JP12 short DP short DN Off board diode CPU JP12 remote DP open remote DN open GPU etc A unique feature of the EMC2101 R device is the ability to start in one of several different configurations based on the pull up resistor on the ALERT output The EVB allows the user to quickly evaluate each of the 4 configurations by adjusting JP11 as shown in Table 3 6 When using the auto load via EEPROM ensure that the Autorefresh Registers is not selected until the loading is complete less than 1 sec Revision 1 5 12 13 06 SMSC EMC2101 10 EVB EMC2101 User Manual e smsc NOTE Only one jumper is to be installed on JP11 and a minimum of one jumper must be installed for the device to operate Table 3 6 ALERT Pull up Resistors SMBus FAN MODE JUMPER NAME OPEN SHORT JP11 33k NA Auto load via EEPROM Initial FAN 0 Duty Cycle 18k NA Auto load2. C Legend Ed Block Address Name Plat line type _ Hw 00 Internal Diode Temp Hii 01 External Diode Temp time sec Time per division fio s R Figure 4 1 EMC2101 Temperature History Graph Revision 1 5 12 13 06 SMSC EMC2101
3. Double click the Last Value column to edit the Register or Bit value EMC2101 found Figure 2 1 Chip Manager Quick Help Startup Screen Revision 1 5 12 13 06 SMSC EMC2101 EVB EMC2101 User Manual File Edit View Favorites Tools Help 3 Q Back 7 x a A P Search 5 Favorites E ae Address C Program Files SMSC ChipMan help help htm SMSC Register Manager Contents Device Selection Register Control Saving and Restoring Register Settings Plotting Register Data Capture Register Data to a File Hardware Monitor Register Co ation Debugging I O Registers Connecting to a Device on a Remote Host Simulation Mode Thermal Mode Fan Curve Test SMBus Test Figure 2 2 Chip Manager Help Screen SMSC EMC2101 Revision 1 5 12 13 06 EVB EMC2101 User Manual E gt smsc 2 4 Board Layout The EVB was designed for ease of use and user experimentation with easily accessible jumpers and access to the SMBus data lines Figure 2 3 below shows the silk screen for the EMC2101 EVB LILLIES EMC2L01 EYALVATION BP wee Ba B o ee FAN DRIVE pian TODI e i es REG eal ne Ba Ll J DO z Ta a ie i P q oud Figure 2 3 EMC2101 Board Outline and Silk screen Revision 1 5 12 13 06 SMSC EMC2101 EVB EMC2101 User Manual 7 gt smsc 3 Hardware Description 3 1 Introduction The EMC2101 EVB provides the means to demonstrate EMC2101 features and to view an
4. SMSC Confidential Fie view Options Control Help S H Quick Help The purpose ofthis utility is to allow the user to view and edit SMSC device registers in the Windows environment To view a group of registers selectthe appropriate group in the left pane To edit the value of a register double click the value in the Last Value column in the right upper pane Type in the desired value The register will be updated with the new value once the cursor leaves the edit window Read only registers are denoted by R in the RAA column and editing of these register values is disallowed Some registers have bit field definitions They are displayed in the lower right pane Ifthe register is not read only i e read write the value of each field can be edited by double clicking on the field value in the Last Value column ofthis pane Type in the desired value to update the bit s of the register The field may also be changed by making a selection from the field s drop down list If a drop down listis available for this field a combo box style button will appear at the right of the Translation column Clicking the button will allow you to select a setting for the bitfield from a drop down list The current values of the registers can be saved to an external text file by using the Export feature The saved text file can also be read back to the device by using the Import feature Import only affects read write registers
5. settings 2 3 Installing the EVB 1 Install the Chip Manager ChipMan application and device driver on a PC by running Setup exe from the ChipMan distribution CD A revision history and install uninstall notes may be found in the readme txt file on the disk 2 Connect the supplied USB cable to an available USB port on the PC Plug the mini B end of the USB cable into EVB connector P6 The 3 3V and Bridge ACT LEDs should illuminate After the EVB is connected to the PC the Find New Hardware wizard will pop up for USB driver installation Follow the instructions in the readme txt file to complete the installation process 3 Start the EVB Software by selecting the Chip Manager application from the SMSC folder from the Programs Windows Start menu The EVB will initialize and the Chip Manager Quick Help screen will appear as in Figure 2 1 The USBAct LED should be blinking when the Chip Manager is running For more help with ChipMan select Help gt Contents for an html based help document as shown in Figure 2 2 Note The SMSC ChipMan application allows viewing and changing register values for a variety of EVBs including the EMC1001 EMC1002 EMC1023 EMC1033 and EMC2101 The ChipMan software only needs to be installed once to support all of these EVBs The list of supported EVBs may be found in the pulldown menu under Options gt Select Device SMSC EMC2101 Revision 1 5 12 13 06 EVB EMC2101 User Manual E SMSC Chip Manager
6. via EEPROM Initial FAN 100 Duty Cycle 10k NA Host load via SMBus initial FAN 0 Duty Cycle 5 6k NA Host load via SMBus initial FAN 100 Duty Cycle 3 10 Other Sensor Features Other features such as Ideality Factor Configuration Conversion Rate Digital Filtering Look up Table Functionality and Standby Mode can be controlled with EMC2101 registers See the datasheet register description for details SMSC EMC2101 Revision 1 5 12 13 06 11 EVB EMC2101 User Manual EP smsc 4 Software Description 4 1 Chip Manager Overview The Chip Manager application ChipMan initially displays the main Help screen where detailed description of the application s features may be found The Help screens can be displayed at any time by selecting Help from the menu bar ChipMan enables the user to display temperature readings set temperature limits and read write configuration register values 4 2 Temperature Register History Graph To open a Temperature or Register History Graph window select the register or registers to plot in the ChipMan application then select Options gt Plot Register Data from the menu bar Once the graph appears select Control gt Start to begin plotting data The history plot continuously updates the register data reported by the EMC2101 Figure 4 1below is a typical Temperature History with the external diode starting at room temp and then being heated using the HEATER jumper JP2 Temperature
7. NT AND THE LIKE AND ANY AND ALL WARRANTIES ARISING FROM ANY COURSE OF DEALING OR USAGE OF TRADE IN NO EVENT SHALL SMSC BE LIABLE FOR ANY DIRECT INCIDENTAL INDIRECT SPECIAL PUNITIVE OR CONSEQUENTIAL DAMAGES OR FOR LOST DATA PROFITS SAVINGS OR REVENUES OF ANY KIND REGARDLESS OF THE FORM OF ACTION WHETHER BASED ON CONTRACT TORT NEGLIGENCE OF SMSC OR OTHERS STRICT LIABILITY BREACH OF WARRANTY OR OTHERWISE WHETHER OR NOT ANY REM EDY OF BUYER IS HELD TO HAVE FAILED OF ITS ESSENTIAL PURPOSE AND WHETHER OR NOT SMSC HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES SMSC EMC2101 1 Revision 1 5 12 13 06 EVB EMC2101 User Manual E gt smsc 1 Overview The EMC2101 is an environmental monitoring device with a selectable PWM or DAC fan driver output one external temperature monitoring channel and one internal temperature monitor It contains advanced circuitry to remove errors induced by series resistance and CPU thermal diode process differences to provide accurate temperature measurements and accurate fan control The FAN output can be configured as a PWM default or DAC output The PWM fan driver uses an eight entry look up table to create a programmable temperature response The DAC output provides a linear drive for the system fan circuit using this same look up table Finally the EMC2101 R has two configuration modes and two default fan settings based on the value of the pull up resistor on the ALERT pin In the Manual Conf
8. SmS SUCCESS BY DESIGN The information contained herein is proprietary to SMSC and shall be used solely in accordance with the agreement pur suant to which it is provided Although the information is believed to be accurate no responsibility is assumed for inaccu racies SMSC reserves the right to make changes to this document and to specifications and product descriptions at any time without notice Neither the provision of this information nor the sale of the described semiconductor devices conveys any licenses under any patent rights or other intellectual property rights of SMSC or others unless specifically specified otherwise The product may contain design defects or errors known as anomalies including but not necessarily limited to any which may be identified in this document which may cause the product to deviate from published specifications SMSC products are not designed intended authorized or warranted for use in any life support or other application where product failure could cause or contribute to personal injury or severe property damage Any and all such uses without prior written approval of an officer of SMSC will be fully at the risk of the customer SMSC is a registered trademark of Standard Microsystems Corporation SMSC SMSC DISCLAIMS AND EXCLUDES ANY AND ALL WARRANTIES INCLUDING WITHOUT LIMITATION ANY AND ALL IMPLIED WARRANTIES OF MERCHANTABILITY FITNESS FOR A PARTICULAR PURPOSE TITLE AND AGAINST INFRINGEME
9. d modify registers A 12V fan and power supply are provided to demonstrate the fan control functionality LEDs indicate status information and test points are included to monitor system voltages with a user provided voltmeter or oscilloscope Figure 3 1shows an overview of the EMC2101 EVB Figure 3 1 EVB Block Diagram MODE 3 3V SELECT test S ol urit LEP YP Remote Diode so Remote Diode DP USB SMBus aay et Bri dge ALERT TACH a LEDS x FAN DRIVERS DAC PWM Heat resistor LED x x TACH SMSC EMC2101 Revision 1 5 12 13 06 E gt smsc EVB EMC2101 User Manual 3 2 EMC2101 The EMC2101 is an SMBus temperature sensor with 1 internal and 1 external sensor in an 8 pin MSOP and 8 pin SOIC package Communications with the EMC2101 sensor is via the SMBus 3 3 USB to SMBus Bridge The USB to SMBus bridge is based on an 8051 micro controller with integrated USB and SMBus interfaces as well as internal flash and RAM During EVB manufacture firmware is loaded into the bridge that provides the interface between the USB and the SMBus Power is sourced to the micro controller from the USB interface for device power and communication 3 3 1 Direct SMBus Connect Option It is also possible to connect an external SMBus master to the EMC2101 EVB A few jumper settings are all that is required to drive the EMC2101 n Simply remove the jumpers on JP6 and connect the SMBus master to the SCL SDA and ALERT pins as well a
10. iguration Mode the device acts as an SMBus client slave and waits to be configured by the system SMBus master In the Automatic Configuration mode the device automatically queries the SMBus for an EEPROM device and uploads configuration information from the EEPROM into its internal registers All of the modes and functions of the EMC2101 can be tested and observed with the EVB EMC2101 The EVB EMC2101 is a USB based platform for evaluating both EMC2101 packages 8 MSOP and 8 SOIC 1 1 Related Documents The CD included with the evaluation board contains the following documents n Evaluation Board Checklist n Bill Of Materials n Schematic n Jumper Settings and Connector List n Datasheet n Chip Manager Application n Register Definition File EMC2101 xml Revision 1 5 12 13 06 SMSC EMC2101 EVB EMC2101 User Manual E gt smsc 2 Getting Started 2 1 System Requirements To use the EVB you will need n APC running Windows 2000 or XP n Display resolution 800x600 or larger to view several windows simultaneously n An available USB port 2 2 Feature Summary n Chip Manager SMSC application allows viewing and changing register values n Graphing of any register n Headers for connecting a remote diode or CPU GPU thermal diode n Resistance Error Correction verification n Autonomous register loading via included EEPROM EMC2101 R only n USB communication to evaluation board n An external SMBus master may also be used via jumper
11. r Manual E gt smsc 3 8 LED Indicators LEDs indicate the status of the following signals Table 3 1 Table 3 1 LED Status Indicators LED SIGNAL OFF GREEN RED LED1 ALERT 3 3V power OFF No ALERT ALERT LED2 3 3V 3 3V power OFF 3 3V power ON NA LED3 Bridge Activity NO Activity on Activity on NA USB SMBus Bridge USB SMBus Bridge LED4 USB Activity NO Activity on USB port Activity on USB port NA LED5 EMC2101 U10 power OFF U10 power ON NA Power LED6 EMC2101 R U11 power OFF U11 power ON NA Power 3 9 Jumper Settings This EVB has many jumper configurations to evaluate all of the features of the EMC2101 3 9 1 Device Power To enable one of the 2 devices on the EVB use jumpers J2 and J3 When a device is selected the appropriate LED will light as shown in Table 3 1 Table 3 2 below summarizes the options Note only one device may be active at a time as both devices have the same SMBus address Table 3 2 Device Power JUMPER NAME POSITION 1 2 POSITION 2 3 J2 EMC2101 POWER U10 power ON U10 power OFF J3 EMC2101 R POWER U11 power ON U11 power OFF 3 9 2 Fan Control SMSC EMC2101 To adjust the fan control circuit one 3 way jumper is used The two settings are DAC mode and PWM mode The default setting is PWM which requires the fan to be connected to FAN CONN 1 and the JP8 shorted from pin 1 2 If the linear DAC mode is desired several things need configured First JP8 must be
12. s an external supply for 3 3V n The 3 3V can be supplied by the SMBus bridge by leaving the 3 3V jumper in place and retaining the USB connection 3 4 Connecting to Remote Diodes This EVB is populated with jumpers to connect to an external diode or CPU GPU If connecting to a CPU s thermal diode it is necessary to provide a common ground Also it is usually necessary to bias the appropriate CPU Vcc plane above this common ground to avoid forward biasing the ESD diodes with the temperature sensor signals Test point TP3 8 10 or 11 provides a ground connection Consult the CPU manufacturer s datasheet for guidance on interfacing to the thermal diode Refer to the schematic EVB EMC2101 SCH 7069 REVB1 pdf for details on the EVB header connections 3 5 Resistance Error Correction REC The remote diode DN signal path has a 100 ohm series resistor to demonstrate the EMC2101 s REC feature The resistor may be effectively removed from the circuit by installing a jumper on JP7 or JP13 R diode See Table 3 4 for details on the REC jumper settings 3 6 Power Source This EVB requires only a USB cable The USB SMBus bridge regulates the 5V USB power to 3 3V used by the EMC2101 and other EVB ciruitry such as the fan and resistive heater 3 7 Test Points Test points are provided for n Ground n 3 3V power n 5V_USB power n FAN pin output n ALERT output n TACH for 3 wire fan included Revision 1 5 12 13 06 SMSC EMC2101 EVB EMC2101 Use
13. shorted from pin 2 3 and the fan must be connected to FAN CONN 2 Then the device must be configured for linear operation via the ChipMan software Consult the datasheet for these settings Table 3 3 Table 3 3 Fan Driver Configuration FAN DRIVER CONFIGURATION JP8 FAN CONNECTOR PWM Position 1 2 P9 DAC Position 2 3 P5 Revision 1 5 12 13 06 E gt smsc 3 9 3 EVB EMC2101 User Manual Remote Diode The remote diode on board the EMC2101 EVB has a heater and an optional in line series resistance adjustment Checking the REC feature of the EMC2101 is accomplished by removing the jumper on JP7 This adds 100 ohms of series resistance to the DN line of the diode connection To return to 0 ohm series resistance replace the jumper on JP7 To heat the diode place a jumper on JP10 To return to ambient conditions remove JP10 These remote diode options are summarized in Table 3 4 below Table 3 4 Remote Diode Settings JUMPER NAME OPEN SHORT JP7 REC Q11 100 ohms in Q11 0 ohms in DN line diode remote DN line diode remote JP13 REC Q12 100 ohms in Q12 0 ohms in DN line diode remote DN line diode remote JP10 HEATER Ambient temp on remote diode 1 0W resistive heater on remote diode Q12 Q12 This EVB also allows for an off board diode to be tested see Table 3 5 This is done by removing both jumpers on JP8 Then connect Pin 1 to the remote
Download Pdf Manuals
Related Search