DE4 User Manual
138
www.terasic.com
June 20, 2018
FPGA and a slave device, the MAX II EPM2210. Through the I2C bus interface the
EXT_PLL_CTRL controller is able to control the Max II device by specifying the desire clock
outputs set by the user. By changing the IP parameters of the Terasic EXT_PLL_CTRL IP, the
external clock ouput frequency can be adjusted accordingly.
Table 5–1
lists the EXT_PLL_CTRL instruction ports.
Figure 5
–26 EXT_PLL_CTRL Instruction Hardware Ports
Table 5–1 EXT_PLL_CTRL instruction ports
Port Name
Direction
Description
osc_50
input
System Clock (50MHz)
rstn
input
Synchronous Reset (0: Module Reset, 1: Normal)
clk1_set_wr
clk2_set_wr
clk3_set_wr
input
Setting Output Frequency Value
clk1_set_rd
clk2_set_rd
clk3_set_rd
output
Read Back Output Frequency Value
conf_wr
input
Start to Transfer Serial Data
(
postive edge
)
conf_rd
input
Start to Read Serial Data
(
postive edge
)
conf_ready
output
Serial Data Transmission is Complete ( 0: Transmission in
Progress, 1: Transmission Complete)
max_sclk
output
Serial Clock to MAX II
max_sdat
inout
Serial Sata to/from MAX II
Summary of Contents for ALTERA DE4
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Page 54: ...DE4 User Manual 54 www terasic com June 20 2018 ...
Page 83: ...DE4 User Manual 83 www terasic com June 20 2018 Figure 3 8 Access DDR2 SO DIMM memory ...
Page 92: ...DE4 User Manual 92 www terasic com June 20 2018 Figure 3 17 Fan Control of the DE4 ...
Page 150: ...DE4 User Manual 150 www terasic com June 20 2018 Figure 5 35 SOPC builder ...