3 Development Board Circuit
3.18 Keys Module
DBUG375-1.0E
35(40)
3.18
Keys Module
3.18.1
Introduction
The development board has four keys that can be used to control input
during testing. When the key is pressed, the input is low. The diagram is as
shown in Figure 3-19.
Figure 3-19 Key Circuit Diagram
V20
T18
U18
T17
KEY1
KEY2
KEY3
KEY4
3.18.2
Pinout
Table 3-22 Pins Distribution of Keys Module
Name
FPGA Pin No.
BANK
I/O Level
Description
KEY1
V20
3
1.5V
KEY1
KEY2
T18
3
1.5V
KEY2
KEY3
U18
3
1.5V
KEY3
KEY4
T17
3
1.5V
KEY4
3.19
Switches Module
3.19.1
Introduction
There are four switches on the development board to control input
during testing.