Xilinx SP601 Hardware UG518 Manual do Utilizador descarregar pdf (Página 37)

SP601 Hardware User Guide www.xilinx.com 37

UG518 (v1.1) August 19, 2009

Detailed Description

User Pushbutton Switches

The SP601 provides five active high pushbutton switches: SW6, SW4, SW5, SW7 and SW9.

The five pushbuttons all have the same topology as the sample shown in Figure 1-25. Four

pushbuttons are assigned as GPIO, and the fifth is assigned as a CPU_RESET. Figure 1-25

and Table 1-19 describe the pushbutton switches.

X-Ref Target - Figure 1-25

Figure 1-25: User Pushbutton Switch (Typical)

Table 1-19: Pushbutton Switch Connections

FPGA U1 Pin Schematic Netname Switch Pin

P4 GPIO_BUTTON_0 SW6.2

F6 GPIO_BUTTON_1 SW4.2

E4 GPIO_BUTTON_2 SW5.2

F5 GPIO_BUTTON_3 SW7.2

N4 CPU_RESET SW9.2

VCC1V8

CPU_RESET

Pushbutton

SW9

R188

4.7K

1/16W

P2 P3

UG518_25_070809

1 2 ... 32 33 34 35 36 37 38 39 40 41 42 ... 54 55

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Xilinx SP601 Hardware UG518 Manual do Utilizador Página 37