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9–18 Chapter 9: Custom PHY IP Core
Optional Reset Control and Status Interface
Altera Transceiver PHY IP Core November 2012 Altera Corporation
User Guide
Optional Reset Control and Status Interface
Table 916 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, Transceiver Reset Control in Arria V Devices, or Transceiver Reset
Control in Cyclone V Devices. This chapter is volume 2 of the appropriate device
handbook.
rx_signaldetect[<n>-1:0]
Output
Signal threshold detect indicator required for the PCI Express
protocol. When asserted, it indicates that the signal present at the
receiver input buffer is above the programmed signal detection
threshold value.
rx_bitslip[<n>-1:0]
Input
Used for manual control of bit slipping. The word aligner slips a
bit of the current word for every rising edge of this signal.
rx_bitslipboundaryselectout
[<n>5-1:0]
Output
This signal is used for bit slip word alignment mode. It reports
the number of bits that the RX block slipped to achieve a
deterministic latency.
rx_patterndetect
[<n>(<w>/<s>)-1:0]
Output
When asserted, indicates that the programmed word alignment
pattern has been detected in the current word boundary.
rx_rmfifodatainserted[<n>-1:0]
Output
When asserted, indicates that the RX rate match block inserted an
||R|| column.
rx_rmfifodatadeleted[<n>-1:0]
Output
When asserted, indicates that the RX rate match block deleted an
||R|| column.
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 in
the MegaWizard Plug-In Manager.
rx_recovered_clk[<n>-1:0]
Output
This is the RX clock which is recovered from the received data
stream.
rx_byteordflag[<n>-1:0]
Output
This status flag is asserted high the received data is aligned to the
byte order pattern that you specify.
Table 9–15. Serial Interface and Status Signals (Part 2 of 2)
Signal Name Direction Signal Name
Table 9–16. Avalon-ST RX Interface
Signal Name Direction Description
pll_powerdown
Input When asserted, resets the TX PLL.
tx_digitalreset[<n>-1:0]
Input
When asserted, reset all blocks in the TX PCS. If your design includes
bonded TX PCS channels, refer to Timing Constraints for Reset Signals
when Using Bonded PCS Channels for a SDC constraint you must
include in your design.
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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