Achronix Speedster22i User Macro Guide Manuale Utente Scaricare il pdf (Pagina 60)

I/O Cells TPAD

Speedster Macro Cell Library

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TPAD

Non-Registered Tristate Output Pad

din pad

TPAD

Figure 1-22: TPAD Logic Symbol

TPADisannon‐registeredt

ristateoutputpad.

Table 1-48: Ports

Name Type Description

din Data input.

Output Enbale. T

he data at the din input is driven to the pad output when

the oe input is driven high. The pad output will be driven into high-

impedance mode when oe is low.

pad Device output pad.

Table 1-49: Parameters

Parameter Defined Values Default Value

location

iostandard “LVCMOS18”

drive

slew

open_drain “true”, “false” “false”

keepmode “pullup”, “pulldown”, “none” “none”

pvt_comp “none”, “own” “none”

Table 1-50: Output Function Table

din oe pad

Verilog Instantiation Template

TPAD #(.location(""),

.iostandard("LVCMOS18"),

.drive("16"),

.slew("slow"),

.open_drain(“false”),

.keepmode(“none”),

.pvt_comp("none"))

instance_name (.din(user_din), .oe(user_oe),

.pad(user_pad));

input

output

“<pad_location>” ““

See Table1‐1

"2", "4", "6", "8", "12", "16" "16"

“fast”, “slow” “slow”

01 0

X0 Z

1 2 ... 55 56 57 58 59 60 61 62 63 64 65 ... 223 224

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Achronix Speedster22i User Macro Guide Manuale Utente Pagina 60

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