Altera Nios Development Board Cyclone II Edition - Manual (Page 44)

2–32 Reference Manual Altera Corporation
Nios Development Board Cyclone II Edition May 2007
Board Components
Table 2–17 lists the connections between the FPGA, U3, and the test
points.
EPCS64 Serial
Configuration
Device (U69) U69 is a serial configuration device connected to the FPGA. Serial
configuration devices are flash memory devices with a serial interface
which can store configuration data, and load the data into the FPGA upon
power up or reconfiguration. U69 can store FPGA configuration data, or
Nios II program data, or both.
Table 2–18 lists the connections between U69 and the FPGA.
The SOPC Builder EPCS Serial Flash Controller component enables
Nios II processor systems to access the EPCS device. Nios II processor
systems can read program code or data from the device, and can write
new data into the EPCS device.
U69 is blank by default. The Quartus II software can program FPGA
configuration data (a .pof file) into U69 through an Altera download
cable connected to J27. Alternately, software running on a Nios II
processor design can write configuration data to U69.
Table 2–17. Test Point Pin Table
Test Point FPGA Pin CPLD Pin Board Net Name
TP1 D19 75 pld_user0
TP2 C19 76 pld_user1
TP3 A20 77 pld_user2
TP4 B20 78 pld_user3
TP5 K16 79 pld_user4
TP6 J16 80 pld_user5
TP7 K17 81 pld_user6
TP8 J18 83 pld_user7
Table 2–18. EPCS64 Pin Table
FPGA Pin U69 Pin Board Net Name
N6 16 pld_dclk
N3 8 pld_data0
D3 7 pld_cs_n
E3 15 pld_asdo