DE3 User Manual
27
2.13
Using the Temperature Sensor
The DE3 board is equipped with a temperature sensor MAX1619, which provides temperature
sensing and over-temperature alert. These functions are achieved by connecting the temperature
sensor to the internal temperature sensing diode of the Stratix III device. The temperature status and
alarm threshold registers of the temperature sensor can be programmed by a two-wire SMBus,
which is connected to the Stratix III FPGA as shown in
Figure 2.20
.
In addition, the 7-bit POR slave
address for this sensor is set to ‘0011000’.
There is an option of connecting a 2-pin +12V fan to JP2 for cooling purpose. The pin near the
HSTC connector C is for +12V, the other one is used for GND. When the temperature of the FPGA
device is over the threshold value set by users, the fan will be turned on. The pin assignments for
the associated interface are listed in
Table A-18.
Finally, the detailed information of the temperature sensor device can be found in its datasheet,
which is available from the manufacturer’s web site, or in the Datasheet/Temperature_Sensor folder
of the DE3 System CD.
TEMP_CLK
TEMP_DATA
TEMP_INTn
TEMP_OVERn
Temperature
Sensor
TEMPDIODEp
TEMPDIODEn
DXP
DXN
ALERT
OVERT
SMBDATA
SMBCLK
Figure 2.20. Connections between the temperature sensor and Stratix III device
Summary of Contents for Altera DE3
Page 1: ...Altera DE3 Board ...
Page 67: ...DE3 User Manual 64 Figure 5 5 Plug USB Devices into DE3 Figure 5 6 Display Device Information ...
Page 75: ...DE3 User Manual 72 Figure 5 14 Display SD Card Information for the SD Card Demonstration ...
Page 79: ...DE3 User Manual 76 Figure 5 19 Parameter Settings in DDR2 Controller ...
Page 114: ...DE3 User Manual 111 Figure D 5 The reported message of the invalid I O pins ...