Altera Stratix GX Transceiver User Manual

Page 249

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Altera Corporation

9–23

January 2005

Stratix GX Transceiver User Guide

Reset Control & Power Down

Contacting Altera

=================

We have made every effort to ensure that this design example works

correctly. If you have a question that is not answered by the

information, please contact Altera Support.

****************************************************************

Reset Sequence for the ALTGXB. The configuration of GXB for which

the following

reset sequence is valid is:

Transmit and Receive : Both used

Datapath

: Single Width(8/10 bits)

receive parallel clock: rx_coreclk

Functional Mode :'Any'

RX PLL CRU

: rx_cruclk

***************************************************************/

`timescale 1ns/10ps

module reset_seq_tx_rx_rx_cruclk_rx_coreclk (

rx_coreclk,

inclk,

rx_cruclk,

sync_reset,

async_reset,

transmit_digitalreset,

receive_digitalreset,

pll_locked,

rx_freqlocked,

pll_areset,

txdigitalreset,

rxanalogreset,

rxdigitalreset

);

input inclk; //GXB input reference clock

input rx_cruclk; //Receive GXB input reference clock

input rx_coreclk;//Receive recovered clock

input sync_reset; //Input: synchronous reset from the system

input async_reset; //Input: async reset from system

input transmit_digitalreset; //Input: Reset only the transmit

digital section

input receive_digitalreset; //Input : Reset the receiver section

input rx_freqlocked; //rx_freqlocked signal from receive;

Transition from 'lock to reference clock mode' to 'lock to data

mode'

input pll_locked; // Transmit PLL of GXB locked

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