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Figure 4-13 HSMC VCCIO supply voltage setting header
Table 4-8 Jumper Settings for different I/O Standards
JP7 Jumper Settings
Supplied Voltage to VCCIO5 & VCCIO6
IO Voltage of HSMC Connector (JP8)
Short Pins 1 and 2 1.5V 1.5V
Short Pins 3 and 4 1.8V 1.8V
Short Pins 5 and 6 2.5V 2.5V (Default)
Short Pins 7 and 8 3.3V 3.3V
Note: Users that connect a daughter card on the HSMC connector need to pay close attention on the
I/O standard between DE2-115 HSMC connector pins and daughter card system. For example, if the I/O
standard of HSMC pins on DE2-115 board is set to 1.8V, a daughter card with 3.3V I/O standard may not
work properly on DE2-115 board due to I/O standard mismatch.
Additionally, when LVDS is used as the I/O standard of the HSMC connector, the LVDS receivers
need to assemble a 100 Ohm resistor between two input signals for each pairs as shown in Figure
4-14. Table 4-9 shows all the pin assignments of the HSMC connector.
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