TR4 User Manual
86
www.terasic.com
March 30, 2017
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 output
frequency can be adjusted accordingly.
Figure 5-2 EXT_PLL_CTRL Instruction Hardware Ports
Table 5-1
lists the EXT_PLL_CTRL instruction 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 Data to/from MAX II
Summary of Contents for TR4
Page 1: ...TR4 User Manual 1 www terasic com March 30 2017 y94 ...
Page 45: ...TR4 User Manual 42 www terasic com March 30 2017 Figure 2 24 Clock Connections of the TR4 ...
Page 58: ...TR4 User Manual 55 www terasic com March 30 2017 Figure 2 31 R199 R201 Position on TR4 ...
Page 67: ...TR4 User Manual 64 www terasic com March 30 2017 Figure 3 7 Access DDR3 SO DIMM Memory ...