
Chapter 4: Backplane Ethernet 10GBASE-KR PHY IP Core 4–19
Register Interface and Register Descriptions
November 2012 Altera CorporationAltera Transceiver PHY IP Core
User Guide
Register Interface and Register Descriptions
Table 4–17 describes the signals that comprise the Avalon-MM PHY Management
interface.
f Refer to the “Typical Slave Read and Write Transfers” and “Master Transfers” sections in
the “Avalon Memory-Mapped Interfaces” chapter of the Avalon Interface Specifications for
timing diagrams.
upi_pre
Input When asserted, sends the preset command.
upi_init
Input When asserted, sends the initialize command.
upi_st_bert
Input When asserted, starts the BER timer.
upi_train_err
Input When asserted, indicates a training error.
upi_rx_trained
Input When asserted, the local RX interface is trained
upo_enable
Output
When asserted, indicates that the 10GBASE-KR PHY IP Core
is ready to receive commands from the embedded processor.
upo_frame_lock
Output
When asserted, indicates the receiver has achieved training
frame lock.
upo_cm_done
Output
When asserted, indicates the master state machine
handshake is complete.
upo_bert_done
Output
When asserted, indicates the BER timer is at its maximum
count.
upo_ber_cnt[<w>-1:0]
Output Records the BER count.
upo_ber_max
Output When asserted, the BER counter has rolled over.
upo_coef_max
Output
When asserted, indicates that the remote coefficients are at
their maximum or minimum values.
Table 4–16. Embedded Processor Link Training Signals (Part 2 of 2)
Signal Name Role Description
Table 4–17. 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
Resets the PHY management interface. This signal is active high and
level sensitive.
mgmt_addr[7:0]
Input 8-bit Avalon-MM address.
mgmt_writedata[31:0]
Input Input data.
mgmt_readdata[31:0]
Output Output data.
mgmt_write
Input Write signal. Active high.
mgmt_read
Input Read signal. Active high.
mgmt_waitrequest
Output
When asserted, indicates that the Avalon-MM slave interface is
unable to respond to a read or write request. When asserted, control
signals to the Avalon-MM slave interface must remain constant.
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