Altera Virtual JTAG IP Core Manual do Utilizador descarregar pdf (Página 13)

CommentsDescriptionRequiredPort Name

Shared among all virtual

JTAG instances.

Indicates that the device JTAG

controller is in the Exit1_IR

state.

Nojtag_state_e1ir

Shared among all virtual

JTAG instances.

Indicates that the device JTAG

controller is in the Pause_IR

state.

Nojtag_state_pir

Shared among all virtual

JTAG instances.

Indicates that the device JTAG

controller is in the Exit2_IR

state.

Nojtag_state_e2ir

Shared among all virtual

JTAG instances.

Indicates that the device JTAG

controller is in the Update_IR

state.

jtag_state_uir

Shared among all virtual

JTAG instances.

TMS input pin on the device.tms

Parameters

Table 6: Parameters for the Virtual JTAG Megafunction

DescriptionRequiredTypeParameter

Specifies whether the Compiler automatically

assigns an index to the Virtual JTAG instance.

Values are YES or NO. When you specify NO,

you can find the auto assigned value of

INSTANCE_ID in the quartus_map file. When

you specify NO, you must define INSTANCE_

INDEX. If the index specified is not unique in a

design, the Compiler automatically reassigns

an index to the instance. The default value is

YES.

YesStringSLD_AUTO_INSTANCE_INDEX

Specifies a unique identifier for every instance

of alt_virtual_jtag when AUTO_INSTANCE_

ID is specified to YES. Otherwise, this value is

ignored.

NoIntegerSLD_INSTANCE_INDEX

Specifies the width of the instruction register

ir_in[] of this virtual JTAG between 1 and 24.

If omitted, the default is 1.

YesIntegerSLD_IR_WIDTH

Altera Corporation

Virtual JTAG Megafunction (sld_virtual_jtag)

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Parameters

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2014.03.19

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