2–54
Reference Manual
Altera Corporation
Stratix II GX PCI Express Development Board
August 2006
Temperature Sensor
Temperature
Sensor
The board has a two-wire SMBus interface to a MAX1619 temperature
sensing device. This is a low-bandwidth A/D converter that measures
small voltage changes across a 2N3904-equivalent diode on the FPGA’s
die. The device can be programmed to automatically turn on a cooling fan
at a temperature threshold. A regular I/O pin is used to
override
the fan
control regardless of the MAX1619 device setting.
Heat Sink and
Fan
One of several available fans that fits the 55 mm-spaced holes is the
Dynatron SCP1 heat-sink with an integrated fan, which is used for FPGA
heat dissipation on each Stratix II GX device. The fan uses 190 mA at 12 V
and can dissipate 25 W of heat with no additional air flow in a lab-bench
type environment. The 12 V is delivered through a two-pin, 100-mil
header (power and GND).
flash_d[13]
C27
flash_d[14]
K24
flash_d[15]
A15
flash_d[2]
B19
flash_d[3]
C31
flash_d[4]
A26
flash_d[5]
G29
flash_d[6]
F23
flash_d[7]
H24
flash_d[8]
A24
flash_d[9]
A27
flash_oen
A25
flash_rdybsyn
N16
flash_resetn
A34
flash_wen
L27
Table 2–34. Flash Memory Pin-Out
Schematic Signal Name
Stratix II GX Pin Number