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LM64 Evaluation Board User’s Guide

Copyright 2003 National Semiconductor Corporation

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Summary of Contents for LM64

Page 1: ...1 1 LM64 Evaluation Board User s Guide Copyright 2003 National Semiconductor Corporation ...

Page 2: ...4 2 0 Getting Started 4 2 1 Required Equipment 4 2 2 Optional Equipment 4 2 3 Test Setup Software 4 2 4 Test Setup Hardware 5 2 5 Test Setup System 6 3 0 Connection Details 7 4 0 Schematic of LM64 Evaluation Board 8 9 5 0 Bill of Materials 10 ...

Page 3: ...ith Integrated Fan Control A schematic and bill of materials is included in this User s Guide Figure 1 shows the location of pin1 for proper orientation of the LM64 in the socket Figure 1 The LM64 Evaluation Board with Open Socket showing pin numbering convention The LM64EVAL kit includes the SensorEval software which is provided by National Semiconductor to communicate with the LM64 Evaluation Bo...

Page 4: ...apable of delivering the fan rated voltage 12 VDC or 5 VDC at twice the rated fan current A pair of wires from the power supply to a female header connector to connect with J2 Fan Power input is suggested If it is desired to run the software only without the LM64 Evaluation board omit items 2 and 3 and proceed to paragraph 2 3 2 2 Optional Equipment Optional pieces of equipment are as follows 1 Re...

Page 5: ...wer supply to the LM64 Evaluation Board jack J2 as shown in Figure 2 Make sure that the positive terminal is connected to V and the negative terminal is connected to the GND of J2 3 Plug in the fan as shown in Figure 2 This pinout is standard for PC processor fans 4 The LM64 Evaluation Board comes with jumpers installed on J4 which connects the on board MMBT3904 diode connected transistor to the i...

Page 6: ... at 0V Change Register 4B if desired to change the Fan Spinup PWM Duty Cycle and Spinup Time Change Register 4C to 10 hex The fan should now start running For continuous temperature and tach readings select the read continuous check box You may also log the data to a file IMPORTANT Registers 4A 4B 4D and then either 4C PWM Value or the Lookup Table in Registers 4F through 5F must be programmed in ...

Page 7: ...mote diode directly to the input of the LM64 JP1 General Purpose Default GPD pins on the bottom row can be manually jumpered to ground to row of pins JP2 General Purpose Input Output GPIO pins right vertical row of pins can be manually jumpered to ground left vertical row of pins JP3 TCRIT and ALERT are the open drain LM64 output pins A0 the LM64 input address pin can be manually jumpered to the G...

Page 8: ...0 PC1 TxD0 PC2 INT0 PC3 INT1 PC4 T0 PC5 T1 PC6 WR PC7 RD USBD USBD DISCON RESERVED_1 CLKOUT RESET Vcc3 Gnd4 Gnd5 Gnd6 Vcc4 RDY2 AOE CTL0 AINFLAG CTL2 AOUTFLAG XCLK RESERVED_4 RESERVED_5 RESERVED_6 RESERVED_7 Gnd1 Gnd3 C1 0 1uF PWM R8 1 5K R7 1 5K C4 0 1uF Alert J1 USB B 1 2 3 4 5 6 VBUS D D GND SHELL_1 SHELL_2 Use a 0 1 uF capacitor for each Vcc pin of U2 and Reserved_6 pin GND U1 LP2950CDT 3 3 TO...

Page 9: ... 5 k R12 10 k 3 3 VDC R22 1 5 k C15 2 2 uF GPIO5 A0 R27 2k 17 V GPD2 TP3 R17 10 k R25 430 PWM GPIO2 R21 1 5 k Tach In To the SDA and SCL Lines on Page 1 See U2 pins 2 and 3 TO FAN SCL R9 10 k JP2 1 3 7 9 5 2 4 6 8 10 J2 3 4 1 2 R28 13k GPIO3 R20 2k FAN POWER V GPD INPUT TCRIT SDA R11 10 k R19 10 k ZMM5247 D0213AA 17V D1 GND 3 3 VDC C20 2 2 nF GPIO REGISTERS TCRIT GPIO2 GPIO4 GPD3 R10 10 k FAN POWE...

Page 10: ...5 1 Q2 Transistor NPN MMBT2222A SOT 16 1 R1 Resistor SMT 100k 17 2 R2 R6 Resistor SMT 1M 18 2 R4 R3 Resistor SMT 22 Ohm 19 3 R5 R7 R8 Resistor SMT 1 5 k 20 11 R9 R10 R11 R12 R13 R14 Resistor SMT 10 k R15 R16 R17 R19 R29 21 1 R18 Resistor SMT 0 Ohm 22 2 R27 R20 Resistor SMT 2k 23 3 R21 R22 R23 Resistor SMT 1 5 k 24 1 R25 Resistor SMT 430 Ohm 25 1 R26 Resistor SMT 10 Ohm 26 1 R28 Resistor SMT 13k 27...

Page 11: ...for use in safety critical applications such as life support where a failure of the TI product would reasonably be expected to cause severe personal injury or death unless officers of the parties have executed an agreement specifically governing such use Buyers represent that they have all necessary expertise in the safety and regulatory ramifications of their applications and acknowledge and agre...

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