User manual

DE2 User Manual
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HEX5[1] PIN_P6 Seven Segment Digit 5[1]
HEX5[2] PIN_P7 Seven Segment Digit 5[2]
HEX5[3] PIN_T9 Seven Segment Digit 5[3]
HEX5[4] PIN_R5 Seven Segment Digit 5[4]
HEX5[5] PIN_R4 Seven Segment Digit 5[5]
HEX5[6] PIN_R3 Seven Segment Digit 5[6]
HEX6[0] PIN_R2 Seven Segment Digit 6[0]
HEX6[1] PIN_P4 Seven Segment Digit 6[1]
HEX6[2] PIN_P3 Seven Segment Digit 6[2]
HEX6[3] PIN_M2 Seven Segment Digit 6[3]
HEX6[4] PIN_M3 Seven Segment Digit 6[4]
HEX6[5] PIN_M5 Seven Segment Digit 6[5]
HEX6[6] PIN_M4 Seven Segment Digit 6[6]
HEX7[0] PIN_L3 Seven Segment Digit 7[0]
HEX7[1] PIN_L2 Seven Segment Digit 7[1]
HEX7[2] PIN_L9 Seven Segment Digit 7[2]
HEX7[3] PIN_L6 Seven Segment Digit 7[3]
HEX7[4] PIN_L7 Seven Segment Digit 7[4]
HEX7[5] PIN_P9 Seven Segment Digit 7[5]
HEX7[6] PIN_N9 Seven Segment Digit 7[6]
Table 4.4. Pin assignments for the 7-segment displays.
4.4 Clock Inputs
The DE2 board includes two oscillators that produce 27 MHz and 50 MHz clock signals. The board
also includes an SMA connector which can be used to connect an external clock source to the board.
The schematic of the clock circuitry is shown in Figure 4.8, and the associated pin assignments
appear in Table 4.5.