
Signal Name Direction Description
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:
• 6'b000001: Auto-Negotiation mode
• 6'b000010: Link Training mode
• 6'b000100: 10GBASE-KR data mode
• 6'b001000: GigE data mode
• 6'b010000: Reserved
• 6'b100000:10G data mode with FEC
dfe_start_rc Output
When asserted, starts the RX DFE equalization of
the PMA.
dfe_mode[1:0] Output Specifies the DFE operation mode. Valid at the
rising edge of the def_start_rc signal and held
until the falling edge of the rc_busy signal. The
following encodings are defined:
• 2'b00: Disable DFE
• 2'b01: DFE triggered mode
• 2'b10: Reserved
• def_start_rcd'b11: Reserved
ctle_start_rc Output When asserted, starts continuous time-linear
equalization (CTLE) reconfiguration.
ctle_mode[1:0] Output Specifies CTLE mode. These signals are valid at the
rising edge of the ctle_start_rc signal and held
until the falling edge of the rc_busy signal. The
following encodings are defined:
• 2'b00: ctle_rc[3:0] drives the value of CTLE
set during link training
• 2'b01: Reserved
• 2b'10: Reserved
• 2'b11: Reserved
ctle_rc[3:0] Output RX CTLE value. This signal is valid at the rising
edge of the ctle_start_rc signal and held until the
falling edge of the rc_busy signal. The valid range
of values is 4'b0000-4'b1111.
5-26
Dynamic Reconfiguration Interface Signals
UG-01080
2015.01.19
Altera Corporation
1G/10 Gbps Ethernet PHY IP Core
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