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November 2012 Altera Corporation Altera Transceiver PHY IP Core
User Guide
5. 1G/10 Gbps Ethernet PHY IP Core
The 1G/10 Gbps Ethernet PHY MegaCore
®
(1G/10GbE) function allows you to
instantiate both the Standard PCS and the higher performance 10G PCS and a PMA.
The Standard PCS implements the 1 GbE protocol as defined in Clause 36 of IEEE
802.3 2005 standard and also supports auto-negotiation as defined in Clause 37 of the
IEEE 802.3 2005 standard. The 10G PCS implements the 10 Gb Ethernet protocol as
defined in IEEE 802.3 2005 standard. You can switch dynamically between the 1G and
10G PCS using the Altera Transceiver Reconfiguration Controller IP Coref to
reprogram the core. This Ethernet core targets 1G/10GbE applications including
network interfaces to 1G/10GbE dual speed SFP+ pluggable modules, 1G/10GbE
10GBASE-T copper external PHY devices to drive CAT-6/7 shielded twisted pair
cables, and chip-to-chip interfaces.
Figure 5–1 shows the top-level modules of the 1G/10GbE PHY IP Core. As this figure
indicates, the 1G/10 Gbps Ethernet PHY connects to a separately instantiated MAC.
The 10G PCS receives and transmits XGMII data. The Standard PCS receives and
transmits GMII data. An Avalon Memory-Mapped (Avalon-MM) slave interface
provides access to PCS registers. the PMA receives and transmits serial data.
Figure 5–1. Top Level Modules of the 1G/10GbE PHY MegaCore Function
Altera Device with 10.3125+ Gbps Serial Transceivers
1G/10Gb Ethernet PHY MegaCore Function
Native PHY Hard IP
257.8
MHz
40-b
40-b
TX
Serial
Data
RX
Serial
Data
1 Gb SFP /
10 Gb SFP+
or XFP /
1G/10 Gb SFP+
Module/
Standard PHY
Product
1G/ 10 Gb
Ethernet
Network
Interface
322.265625 MHz
or 644.53125 MHz
Reference Clock
62.5 MHz or 125 MHz
Reference Clock
Legend
Hard IP
Soft IP
ATX/CMU
TX PLL
For
10 GbE
ATX/CMU
TX PLL
For 1 GbE
1.25 Gb/
10.3125 Gb
Hard PMA
Link
Status
Sequencer
(Optional)
10 Gb
Ethernet
Hard PCS
1 Gb
Ethernet
Standard
Hard PCS
(Optional)
To/From Modules in the PHY MegaCore
Control and Status
Registers
Avalon-MM
PHY Management
Interface
PCS Reconfig
Request
Optional
1588 TX and
RX Latency
Adjust 1G
and 10G
To/From
1G/10Gb
Ethernet
MAC
RX GMII Data
TX GMII Data
@ 125 MHz
RX XGMII Data
TX XGMII Data
@156.25 MHz
1 GIGE
PCS
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