TR5-Lite User Manual
19
June 20, 2018
The TR5-Lite board consists of 4 user-controllable LEDs to allow status and debugging signals to
be driven to the LEDs from the designs loaded into the Stratix V GX device. Each LED is driven
directly by the Stratix V GX FPGA. The LED is turned on or off when the associated pins are
driven to a low or high logic level, respectively. A list of the pin names on the FPGA that are
connected to the LEDs is given in
Table 2-6
User LEDs Pin Assignments, Schematic Signal Names, and Functions
Board
Reference
Schematic
Signal
Name
Description
I/O
Standard
Stratix IV GX
Pin Number
D3
LED0
Driving a logic 0 on the I/O port turns the LED
ON.
Driving a logic 1 on the I/O port turns the LED
OFF.
2.5-V
PIN_C33
D4
LED1
2.5-V
PIN_B32
D5
LED2
2.5-V
PIN_C34
D6
LED3
2.5-V
PIN_B34
2
2
.
.
4
4
T
T
e
e
m
m
p
p
e
e
r
r
a
a
t
t
u
u
r
r
e
e
S
S
e
e
n
n
s
s
o
o
r
r
a
a
n
n
d
d
F
F
a
a
n
n
C
C
o
o
n
n
t
t
r
r
o
o
l
l
The TR5-Lite is equipped with a temperature sensor, MAX1619, which provides temperature
sensing and over-temperature alert. These functions are accomplished by connecting the
temperature sensor to the internal temperature sensing diode of the Stratix V GX 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 V GX FPGA. In addition, the 7-bit POR slave
address for this sensor is set to ‘0011000b’.
An optional 3-pin +12V fan located on J2 of the TR5-Lite board is intended to reduce the
temperature of the FPGA. Users can control the fan to turn on/off depending on the measured
system temperature. The FAN is turned on when the FAN_CTRL pins are driven to a high logic
level.
The pin assignments for the associated interface are listed in
Table 2-7
Temperature Sensor Pin Assignments, Schematic Signal Names, and Functions
Schematic
Signal Name
Description
I/O Standard
Stratix IV GX Pin
Number
TEMPDIODEp
Positive pin of temperature diode in
Stratix V
2.5-V
PIN_P6
