TR4 User Manual
26
www.terasic.com
March 30, 2017
Also, the 12V DC and 3.3V DC power supplies from the HSMC ports have fuses for protection.
Users who don’t need the power from the HSMC can remove these fuses to cut the power on
connector.
CAUTION.
Before powering on the TR4 board with a daughter card, please check to see if there is
a short circuit between the power pins and FPGA I/O.
Table 2-11
Power Supply of the HSMC
Supplied Voltage
Max. Current Limit
12V
2A
3.3V
3A
Adjustable I/O Standards
The FPGA I/O standards of the HSMC ports can be adjusted by configuring the header position.
Each port can be individually adjusted to 1.5V, 1.8V, 2.5V or 3.0V via jumpers on the top-right
corner of TR4 board.
Figure 2-14
depicts the position of the jumpers and their associated I/O
standards. Users can use 2-pin jumpers to configure the I/O standard by choosing the associated
positions on the header.
Finally, there are LEDs on the top-right corner of TR4 board to indicate the I/O standard of each
HSMC port, as shown in
Table 2-12
. For example, LEDs D11 and D12 will be turned on and off,
respectively, when the I/O Standard of HSMC Port A is set to 2.5V.
Figure 2-14 HSMC I/O Configuration Header
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 ...