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Chapter 11: Deterministic Latency PHY IP Core 11–17
Optional Reset Control and Status Interfaces
November 2012 Altera Corporation Altera Transceiver PHY IP Core
User Guide
Optional Reset Control and Status Interfaces
Table 11–17 describes the signals in the optional reset control and status interface.
These signals are available if you do not enable the embedded reset controller.
f For more information about manual control of the reset sequence refer to
Transceiver
Reset Control in Arria V Devices, Transceiver Reset Control in Cyclone V Devices or
Transceiver Reset Control in Stratix V Devices as appropriate.
rx_errdetect[(<n>(<d>/<s>)-1:0]
Output
When asserted, indicates that a received 10-bit code group
has an 8B/10B code violation or disparity error.
rx_syncstatus[(<n>(<d>/<s>)-1:0]
Output
Indicates presence or absence of synchronization on the
RX interface. Asserted when word aligner identifies the
word alignment pattern or synchronization code groups in
the received data stream. This signal is optional.
rx_is_lockedtoref[(<n>(<d>/<s>)-1:0]
Output
Asserted when the receiver CDR is locked to the input
reference clock. This signal is asynchronous. This signal is
optional.
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 MegaWizard Plug-In Manager.
rx_runningdisp[(<n>(<d>/<s>)-1:0]
Output
This status signal indicates the disparity of the incoming
data.
Table 11–16. Serial Interface and Status Signals (Part 2 of 2)
(1)
Signal Name Direction Signal Name
Table 11–17. 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.
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