Altera Cyclone II FPGA Starter Development Board Manuel d'utilisateur télécharger pdf (Page 32)

2–14 Reference Manual Altera Corporation

Cyclone II FPGA Starter Development Board October 2006

Development Board Components

Figure 2–7. Clocking Circuit Schematic Diagram

Clock Input Pin List

Table 2–9 lists the FPGA pins assigned to the display segments.

Switches

The development board provides the following user switches:

■ Power ON/OFF switch

■ RUN/PROG switch

■ 4 push button switches

■ 10 Toggle switches

Table 2–9. Clock Circuit FPGA Pin Connections

Signal Name FPGA Pin Description

CLOCK_27 PIN_D12 27 MHz clock input

CLOCK_50 PIN_L1 50 MHz clock input

CLOCK_24 PIN_B12 24 MHz clock input from USB Blaster

EXT_CLOCK PIN_M21 External (SMA) clock input

1 2 ... 27 28 29 30 31 32 33 34 35 36 37 ... 55 56

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Altera Cyclone II FPGA Starter Development Board Manuel d'utilisateur Page 32