Altera LVDS SERDES Transmitter / Receiver Manual de usuario descargar pdf (Pagina 37)

Parameter Type Description

inclock_data_alignment String

Specifies the phase alignment of the rx_in and

rx_inclock input ports in terms of the rx_

inclock frequency. The clock phase alignment

for the inclock_data_alignment parameter

specifies the positive phase shift needed for the

clock for alignment with the data.

This parameter is only used by the RTL

simulation model and has no affect on how the

Fitter sets the PLL parameters.

The following are the parameter values and the

corresponding phase shifts in degrees (°):

• EDGE_ALIGNED: 0°

• 45_DEGREES: 45°

• 90_DEGREES: 90°

• 135_DEGREES: 135°

• CENTER_ALIGNED: 180°

• 225_DEGREES: 225°

• 270_DEGREES: 270°

• 315_DEGREES: 315°

If omitted, the default value is EDGE_ALIGNED.

inclock_period

Integer Specifies the period or frequency of the rx_

inclock port. The default time unit is an

integer in picoseconds (ps). In AHDL designs

only, strings, such as 50.5 MHz, are acceptable.

inclock_phase_shift Integer This parameter is used to set the phase shift

parameters used by the PLL. Specifies a phase

shift in 15° increments.

input_data_rate Integer Specifies the data rate into the PLL. The

multiplication value for the PLL is INPUT_DATA_

RATE/INCLOCK_PERIOD.

lose_lock_on_one_change String Specifies when the DPA circuitry should lose

lock. You must enable the rx_dpa_locked port

and the enable_dpa_mode parameter if this

parameter is specified. Values are ON and OFF. If

omitted, the default value is ON.

number_of_channels Integer Specifies the number of LVDS channels.

outclock_resource String Specifies the clock resource type to use with the

rx_outclock port. The values are AUTO,

Regional Clock, and Global Clock. If

omitted, the default value is AUTO.

pll_operation_mode String Specifies the source synchronous mode for

Cyclone II and Stratix II device LE PLLs. The

values are NORMAL and SOURCE_SYNCHRONOUS. If

omitted, the default value is NORMAL.

UG-MF9504

2014.12.15

Command Line Interface Parameters

LVDS SERDES Transmitter/Receiver IP Cores User Guide

Altera Corporation

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