Altera UG-01080 Betriebsanweisung Seite 66

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Chapter 4: Backplane Ethernet 10GBASE-KR PHY IP Core 4–18
Embedded Processor Mode Interface
November 2012 Altera CorporationAltera Transceiver PHY IP Core
User Guide
Table 415 describes the signals that permit a daisy-chain mode for Link Training.
Embedded Processor Mode Interface
Table 416 describes the signals that allow you to use the embedded processor mode
of Link Training. This mode overrides the TX adaptation algorithm and allows an
embedded processor to initialize the link.
Table 4–15. Daisy Chain Mode
Signal Name Role Description
dmi_mode_en
input When asserted, enable Daisy Chain mode.
dmi_frame_lock
input
When asserted, the daisy chain state machine has locked to
the training frames.
dmi_rmt_rx_ready
Input
Corresponds to bit 15 of Status report field. When asserted,
the remote receiver.
dmi_lcl_coefl[5:0]
Input
Local update low bits[5:0]. In daisy-chained configurations,
the local update coefficients substitute for the coefficients
that would be set using Link Training.
dmi_lcl_coefh[1:0]
Input
Local update high bits[13:12]. In daisy-chained
configurations, the local update coefficients substitute for the
coefficients that would be set using Link Training.
dmi_lcl_upd_new
Input When asserted, indicates a local update has occurred.
dmi_rx_trained
input
When asserted, indicates that the state machine has finished
local training.
dmo_frame_lock
Output
When asserted, indicates that the state machine has locked to
the training frames.
dmo_rmt_rx_ready
Output Corresponds to the link partner’s remote receiver ready bit.
dmo_lcl_coefl[5:0]
Output
Local update low bits[5:0]. In daisy-chained configurations,
the local update coefficients substitute for the coefficients
that would be set using Link Training.
dmo_lcl_coefh[1:0]
Output
Local update high bits[13:12]. In daisy-chained
configurations, the local update coefficients substitute for the
coefficients that would be set using Link Training.
dmo_lcl_upd_new
Output When asserted, indicates a local update has occurred.
dmo_rx_trained
Output
When asserted, indicates that the state machine has finished
local training.
Table 4–16. Embedded Processor Link Training Signals (Part 1 of 2)
Signal Name Role Description
upi_mode_en
Input When asserted, enables embedded processor mode.
upi_adj[1:0]
Input
Selects the active tap. The following encodings are defined:
2’b01: Main tap
2’b10: Post-tap
2’b11 Pre-tap
upi_inc
Input When asserted, sends the increment command.
upi_dec
Input When asserted, sends the decrement command.
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