Altera Corporation
Reference Manual
2–13
October 2007
Cyclone III FPGA Starter Board
Board Components & Interfaces
Push Buttons
The board has system reset, user reset, and user push buttons.
lists the pinout for all push buttons. Push buttons are a logic “1” until
depressed.
HSMC_TX_p12
L17 Bidirectional
2.5
V
125
HSMC_RX_p12
L16 Bidirectional
2.5
V
126
HSMC_TX_n12
M18 Bidirectional
2.5
V
127
HSMC_RX_n12
M17 Bidirectional
2.5
V
128
HSMC_TX_p13
L14 Bidirectional
2.5
V
131
HSMC_RX_p13
L13 Bidirectional
2.5
V
132
HSMC_TX_n13
L15 Bidirectional
2.5
V
133
HSMC_RX_n13
M14 Bidirectional
2.5
V
134
HSMC_TX_p14
P17 Bidirectional
2.5
V
137
HSMC_RX_p14
R17 Bidirectional
2.5
V
138
HSMC_TX_n14
P18 Bidirectional
2.5
V
139
HSMC_RX_n14
R18 Bidirectional
2.5
V
140
HSMC_TX_p15
R5 Bidirectional
2.5
V
143
HSMC_RX_p15
M6 Bidirectional
2.5
V
144
HSMC_TX_n15
R4 Bidirectional
2.5
V
145
HSMC_RX_n15
N6 Bidirectional
2.5
V
146
HSMC_TX_p16
T17 Bidirectional
2.5
V
149
HSMC_RX_p16
M13 Bidirectional
2.5
V
150
HSMC_TX_n16
T18 Bidirectional
2.5
V
151
HSMC_RX_n16
N13 Bidirectional
2.5
V
152
Table 2–9. HSMC Pinout (Part 3 of 3)
Signal Name
FPGA Pin Name
Direction Type
HSMC
Pin
Table 2–10. Push Button Pinout
Signal Name
FPGA Pin
Direction
Type
KEY0
F1
Input
2.5 V
KEY1
F2 Input
2.5
V
KEY2
A10 Input
2.5
V
KEY3
B10 Input
2.5
V
CPU_RESET_N
N2
Input
2.5 V
RECONFIGURE
H5 (nConfig)
Input
2.5 V
