Achronix Speedster22i User Macro Guide Manuale Utente Scaricare il pdf (Pagina 30)

I/O Cells IPAD

Speedster Macro Cell Library

www.achronix.com PAGE 13

IPAD

Non-Registered Input Pad

doutpad

IPAD

Figure 1-6: IPAD Logic Symbol

IPADisanasync

hronous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”

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Achronix Speedster22i User Macro Guide Manuale Utente Pagina 30