TR4 User Manual
53
www.terasic.com
March 30, 2017
SSRAM_CLK
Synchronous Clock
3.0-V PCI-X
PIN_AG17
SSRAM_MODE
Burst Sequence Selection
-
-
SSRAM_GW_n
Synchronous Global Write Enable
-
-
SRAM_CE2
Synchronous Chip Enable
-
-
SSRAM_CE3_n
Synchronous Chip Enable
-
-
SSRAM_ZZ
Power Sleep Mode
-
-
2
2
.
.
1
1
2
2
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The TR4 is equipped with a temperature sensor MAX1619, which provides temperature sensing and
over-temperature alerts. These functions are accomplished by connecting the temperature sensor to
the internal temperature sensing diode of the Stratix IV 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 IV GX FPGA. The 7-bit power-on-reset (POR) slave address for
this sensor is ‘0011000b’.
An optional 3-pin +12V header for fan control located on J10 of the TR4 board is intended to
reduce the temperature of the FPGA. When the temperature of the FPGA device is over the
threshold value set by the users, the fan will turn on automatically. The pin assignments for the
associated interface are listed in
Table 2-20
.
Table 2-20 Temperature Sensor Pin Assignments, Schematic Signal Names, and Functions
Schematic Signal
Name
Description
I/O Standard Stratix IV GX Pin Number
TEMP_SMCLK
SMBus clock
2.5-V
PIN_AR14
TEMP_SMDAT
SMBus data
2.5-V
PIN_AP14
TEMP_OVERT_n SMBus over-temperature alarm 2.5-V
PIN_AK14
TEMP_INT_n
SMBus alert (interrupt)
2.5-V
PIN_AH13
FAN_CTRL
Fan control
1.5-V
PIN_B17
2
2
.
.
1
1
3
3
P
P
o
o
w
w
e
e
r
r
The TR4 board features a standalone DC input rated at 19V.The DC voltage is stepped down to
various power rails used by the components on the board and installed into the HSMC connectors.
P
P
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Summary of Contents for TR4
Page 1: ...TR4 User Manual 1 www terasic com March 30 2017 y94 ...
Page 45: ...TR4 User Manual 42 www terasic com March 30 2017 Figure 2 24 Clock Connections of the TR4 ...
Page 58: ...TR4 User Manual 55 www terasic com March 30 2017 Figure 2 31 R199 R201 Position on TR4 ...
Page 67: ...TR4 User Manual 64 www terasic com March 30 2017 Figure 3 7 Access DDR3 SO DIMM Memory ...