Altera UG-01080 Guía de usuario Pagina 99

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Chapter 5: 1G/10 Gbps Ethernet PHY IP Core 5–11
Register Interface and Register Descriptions
November 2012 Altera CorporationAltera Transceiver PHY IP Core
User Guide
Register Interface and Register Descriptions
Table 513 describes the signals that comprise the Avalon-MM PHY Management
interface. You can use a 32-bit embedded processor to drive this interface.
calc_clk_1g
Input
This clock is used for calculating the latency of the soft 1G
PCS block. This clock is only required for when you enable
1588 in 1G mode.
rx_sync_status
Output
When asserted, indicates the word aligner has aligned to in
incoming word alignment pattern.
tx_pcfifo_error_1g
Output
When asserted, indicates that the Standard PCS TX phase
compensation FIFO is full.
rx_pcfifo_error_1g
Output
When asserted, indicates that the Standard PCS RX phase
compensation FIFO is full.
lcl_rf
Input
This signal is not used in 1G/10GbE mode. You should tie it to
0.
trn_in_trigger[3:0]
Input This signal is not functional in 1G/10Gbe mode. Tie to 1’b0.
trn_out_trigger[3:0]
Output This signal is not functional in 1G/10Gbe mode. Tie to 1’b0.
rx_rlv
Output When asserted, indicates a run length violation.
rx_clkslip
Input
When high, indicates that the deserializer has either skipped
one serial bit or paused the serial clock for one cycle to
achieve word alignment. As a result, the period of the parallel
clock could be extended by 1 unit interval (UI) during the
clock slip operation.
rx_latency_adj_1g[11:0]
Output
When you enable 1588, this signal outputs the real time
latency for the RX PCS and PMA datapath for 1G mode.
tx_latency_adj_1g[11:0]
Output
When you enable 1588, this signal outputs real time latency
of the TX PCS and PMA datapath for 1G mode.
rx_latency_adj_1g[11:0]
Output
When you enable 1588, this signal outputs the real time
latency for the RX PCS and PMA datapath for 1G mode.
tx_latency_adj_1g[11:0]
Output
When you enable 1588, this signal outputs real time latency
of the TX PCS and PMA datapath for 1G mode.
rx_data_ready
Output
This signal is not used in 1G/10GbE mode. You should leave it
disconnected.
Table 5–12. Control and Status Signals (Part 2 of 2)
Signal Name Direction Description
Table 5–13. Avalon-MM PHY Management Signals
Signal Name Direction Description
mgmt_clk
Input
The clock signal that controls the Avalon-MM PHY management,
interface. If you plan to use the same clock for the PHY
management interface and transceiver reconfiguration, you must
restrict the frequency range of
mgmt_clk
to 100–125 MHz to meet
the specification for the transceiver reconfiguration clock.
mgmt_clk_reset
Input
Global reset signal that resets the entire 1G/10GbE PHY. This signal
is active high and level sensitive.
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