V-Series Transceiver PHY IP Core User Guide

ID 683171
Date 7/26/2022
Public
Document Table of Contents

3.18. 10GBASE-R PHY Dynamic Reconfiguration for Stratix IV Devices

The 10GBASE-R PHY includes additional top-level signals when configured with an external modules for PMA control and dynamic reconfiguration.

You enable this configuration by turning on Use external PMA control and reconfig available for Stratix IV GT devices.

Table 20.  External PMA and Reconfiguration Signals
Signal Name Direction Description
gxb_pdn Input When asserted, powers down the entire GT block. Active high. For Stratix IV de
pll_pdn Input When asserted, powers down the TX PLL. Active high.
cal_blk_pdn Input When asserted, powers down the calibration block. Active high.
cal_blk_clk Input Calibration clock. For Stratix IV devices only. It must be in the range 37.5-50 MHz. You can use the same clock for the phy_mgmt_clk and the cal_blk_clk.
pll_locked Output When asserted, indicates that the TX PLL is locked.
reconfig_to_xcvr[3:0] Input Reconfiguration signals from the Transceiver Reconfiguration Controller to the PHY device. This signal is only available in Stratix IV devices.
reconfig_from_xcvr [(<n>/4)17-1:0] Output Reconfiguration RAM. The PHY device drives this RAM data to the transceiver reconfiguration IP. This signal is only available in Stratix IV devices.