User guide

9–18 Chapter 9: Deterministic Latency PHY IP Core
Interfaces
Altera Transceiver PHY IP Core March 2012 Altera Corporation
User Guide
Optional Reset Control and Status
Table 9–16 describes the signals in the optional reset control and status interface.
These signals are available if you do not enable the embedded reset controller. For
more information including timing diagrams, refer to Transceiver Reset Control in
Stratix V Devices in volume 3 of the Stratix V Device Handbook.
Register Interface
The Avalon-MM PHY management interface provides access to the Deterministic
Latency PHY PCS and PMA registers that control the TX and RX channels, the PMA
powerdown and PLL registers, and loopback modes.
rx_is_lockedtodata[(<n>(<d>/<s>)-1:0] Output
When asserted, the receiver CDR is in to lock-to-data
mode. When deasserted, the receiver CDR lock mode
depends on the
rx_locktorefclk signal level. This signal
is optional.
rx_patterndetect[(<n>(<d>/<s>)-1:0] Output
When asserted, indicates that the programmed word
alignment pattern has been detected in the current word
boundary.
rx_rlv[<n>-1:0] Output
When asserted, indicates a run length violation. Asserted if
the number of consecutive 1s or 0s exceeds the number
specified using the parameter editor.
Table 9–15. Serial Interface and Status Signals (Part 2 of 2)
(1)
Signal Name Direction Signal Name
Table 9–16. Avalon-ST RX Interface
Signal Name Direction Description
pll_powerdown[<n>-1:0] Input When asserted, resets the TX PLL.
tx_digitalreset[<n>-1:0] Input When asserted, reset all blocks in the TX PCS.
tx_analogreset[<n>-1:0] Input When asserted, resets all blocks in the TX PMA.
tx_cal_busy[<n>-1:0] Output
When asserted, indicates that the TX channel is being calibrated. You
must hold the channel in reset until calibration completes.
rx_digitalreset[<n>-1:0] Input When asserted, resets the RX PCS.
rx_analogreset[<n>-1:0] Input When asserted, resets the RX CDR.
rx_cal_busy[<n>-1:0] Output
When asserted, indicates that the RX channel is being calibrated. You
must hold the channel in reset until calibration completes.