Altera Nios Cyclone II Edition Reference Manual page 32

Board Components
2–20
Nios Development Board Cyclone II Edition
Figure 2–7. PROTO1 Pin Information – J11, J12, & J13
J12
Notes to Figure 2–7:
(1) Unregulated voltage from DC power supply.
(2) Clk from board oscillator.
(3) Clk from FPGA.
(4) Clk output from PROTO1 card to FPGA.
Reference Manual
J11
J13
Altera Corporation
May 2007