Achronix Speedster22i User Macro Guide - Manual (Page 30)

I/O Cells IPAD
Speedster Macro Cell Library www.achronix.com PAGE 13
IPAD
Non-Registered Input Pad
dout pad
IPAD
Figure 1-6: IPAD Logic Symbol
IPAD is an asynchronous input pad.
Table 1-14: Ports
Name Type Description
pad Device pad.
dout Data output.
Table 1-15: Parameters
Parameter Defined Values Default Value
location
iostandard “LVCMOS18”
keepmode
hysteresis
pvt_comp “none”, “own” “none”
odt “off”, “on” “off”
termination “50”, “60”, “75”, “100”, “120”, “240” “50”
Table 1-16: Input Function Table
pad dout
Verilog Instantiation Template
IPAD #(.location(""),
.iostandard("LVCMOS18"),
.keepmode("none"),
.hysteresis("none"),
.pvt_comp("none"),
.termination("50"),
.odt("off"))
instance_name (.dout(user_dout),
.pad(user_pad));
input
output
“<pad_location>” ““
See Table 1‐1
"pullup", "pulldown", "none" “none”
"none", "schmitt" “none”
0 0
1 1
X X
Z X