
Chapter 5: 1G/10 Gbps Ethernet PHY IP Core 5–22
Dynamic Reconfiguration
November 2012 Altera CorporationAltera Transceiver PHY IP Core
User Guide
Dynamic Reconfiguration
Table 5–19 describes the signals the dynamic reconfiguration interface.
Table 5–19. Dynamic Reconfiguration Signals
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.
pcs_mode_rc[5:0]
Output
Specifies the PCS mode for reconfig using 1-hot encoding.
The following modes are defined in 1G/10GbE mode:
■ 6’b000001: Reserved
■ 6’b000010: Reserved
■ 6’b000100: 10G data mode
■ 6’b001000: 1G data mode
■ 6’b010000: Reserved
■ 6’b100000: Reserved
mode_1g_10gbar
Input
This signal indicates the requested mode for the channel. A 1
indicates 1G mode and a 0 indicates 10G mode.
en_lcl_rxeq
Output Not functional in 1G/10GbE mode. Leave disconnected.
rxeq_done
Input Not functional in 1G/10GbE mode. Set to 1’b1.
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