
Chapter 4: Backplane Ethernet 10GBASE-KR PHY IP Core 4–37
Design Examples
November 2012 Altera CorporationAltera Transceiver PHY IP Core
User Guide
Design Examples
Altera has two design examples to assist you in integrating this PHY IP into your
design.
■ A MAC and PHY design example. This design example instantiates the 1G/10GbE
PHY IP along with the 1G/10G Ethernet MAC and supporting logic. It is part of
the Quartus II 12.1 installation and is located in the <quartus2_install_dir>/ip
subdirectory. For more information about this example design, refer to the 10-Gbps
Ethernet MAC MegaCore Function User Guide.
■ A PHY-only design example. This design example instantiates the 1G/10GbE PHY
IP along with its supporting logic as shown in Figure 4–7 above. It is available
from Altera by request. To obtain this example design, please file a request
through mySupport.
Dynamic Reconfiguration Interface
Table 4–22 describes the signals the dynamic reconfiguration interface. This signals
are illustrated in the 10GBASE-KR Top-Level Signals figure.
Table 4–22. Dynamic Reconfiguration Signals (Part 1 of 2)
Signal Name Direction Description
reconfig_to_xcvr
[(<n>70-1):0]
Input
Reconfiguration signals from the Reconfiguration Design
Example. <n> grows linearly with the number of
reconfiguration interfaces.
reconfig_from_xcvr
[(<n>46-1):0]
OUtput
Reconfiguration signals to the Reconfiguration Design
Example. <n> grows linearly with the number of
reconfiguration interfaces.
rc_busy
Input When asserted, indicates that reconfig is in progress.
lt_start_rc
Output
When asserted, starts the TX PMA equalization
reconfiguration.
main_rc[5:0]
Output The main TX equalization tap value which is the same as V
OD
.
post_rc[4:0]
Output The post-cursor TX equalization tap value.
pre_rc[3:0]
Output The pre-cursor TX equalization tap value.
tap_to_upd[2:0]
Output
Specifies the TX equalization tap to update to optimize signal
quality. The following encodings are defined:
■ 3’b100: main tap
■ 3’b010: post-tap
■ 3’b001: pre-tap
seq_start_rc
Output When asserted, starts PCS reconfiguration.
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