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 1-25and Table 1-19describe the pushbutton switches.

VCC1V8

Pushbutton

1

CPU_RESET2

P1 P4

P2 P3

4

3

SW9

1 R188

4.7K

5%

2 1/16W

UG518_25_070809

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

 

 

 

SP601 Hardware User Guide

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UG518 (v1.1) August 19, 2009

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Xilinx UG518 manual User Pushbutton Switches