Altera Transceiver PHY IP Core User Manual
Page 590
Transceiver PLL IP Core for Stratix V, Arria V,
and Arria V GZ Devices
18
2015.01.19
UG-01080
When a fractional PLL functions as the TX PLL, you must configure the Native PHY IP Core to use
external PLLs. If you also want to use CMU or ATX PLLs, you must use the device-specific Transceiver
PLL to instantiate them.
The MegaCore Library includes the following IP cores to instantiate external CMU and ATX PLLs:
• Stratix V Transceiver PLL
• Arria V Transceiver PLL
• Arria V GZ Transceiver PLL
You instantiate the Altera Phase-Locked Loop (ALTERA_ PLL) IP Core to specify the fractional PLL and
the Native PHY IP Core to specify the PMA and PCS settings. In the Native PHY GUI, select the Use
external TX PLL option under the TX PLL Options heading. When you choose this option, the Native
PHY includes a top-level bus,
ext_pll_clk[
-1:0]
that you can connect to the external CMU, ATX,
and fractional PLLs. To achieve different TX channel data rates, you create point-to-point connections
between
ext_pll_clk[
-1:0]
and the CMU, ATX, and fractional PLLs required.
©
2015 Altera Corporation. All rights reserved. ALTERA, ARRIA, CYCLONE, ENPIRION, MAX, MEGACORE, NIOS, QUARTUS and STRATIX words and logos are
trademarks of Altera Corporation and registered in the U.S. Patent and Trademark Office and in other countries. All other words and logos identified as
trademarks or service marks are the property of their respective holders as described at
www.altera.com/common/legal.html
. Altera warrants performance
of its semiconductor products to current specifications in accordance with Altera's standard warranty, but reserves the right to make changes to any
products and services at any time without notice. Altera assumes no responsibility or liability arising out of the application or use of any information,
product, or service described herein except as expressly agreed to in writing by Altera. Altera customers are advised to obtain the latest version of device
specifications before relying on any published information and before placing orders for products or services.
www.altera.com
101 Innovation Drive, San Jose, CA 95134