Altera Stratix II GX EP2SGX90 Transceiver Signal Integrit Manual de usuario Pagina 29

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Altera Corporation Reference Manual 2–19
May 2006 Stratix II GX EP2SGX90 Transceiver Signal Integrity Development Board
Board Components & Interfaces
Figure 2–11 shows the LED schematic.
Figure 2–11. LED Schematic
7-Segment Displays (D9, D10)
Board references D9 and D10 are dual user-defined, seven-segment
displays. The primary function of the 7-segment displays is to display the
board’s hardware version, which simplifies board revision control.
To save board space, the 7-segment displays are a small form factor. Each
segment is individually controlled by a general purpose I/O pin. When
the EP2SGX90 FPGA pin drives logic 0, the corresponding segment
illuminates. See Figure 2–12.
1
2
RN2
220
R_PACK-4
USER_LED0
USER_LED2
USER_LED3
USER_LED4
USER_LED5
USER_LED6
USER_LED7
USER_LED8
7
7
3
6
4
5
3V3
1
2
RN3 R_PACK-4
7
7
3
6
4
5
D1
LED GREEN
12
D2
LED GREEN
12
D3
LED GREEN
12
D4
LED GREEN
12
D5
LED GREEN
12
D6
LED GREEN
12
LED GREEN
12
D8
D7
LED GREEN
12
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