Altera UG-01080 Betriebsanweisung Seite 210

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10–12 Chapter 10: Low Latency 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 1011 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 2 of the Stratix V Device Handbook.
Register Interface and Register Descriptions
The Avalon-MM PHY management interface provides access to the Low Latency PHY
PCS and PMA registers that control the TX and RX channels, the PMA powerdown,
PLL registers, and loopback modes. Figure 10–3 provides a high-level view of this
hardware.
Table 10–11. 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.
Figure 10–3. PMA Top-Level Modules
PMA and Light-Weight PCS
Dynamic
Reconfiguration
Native PMA
Control
Channel
Control
S
Avalon-MM
Control
S
S
Low Latency
PHY Controller
Tx Data
to Embedded
Controller
Transceiver
Reconfiguration
Controller
to and from
User Logic
Tx Parallel Data
Rx Data
Rx Parallel Data
M
Avalon-MM
PHY
Mgmt
S
Rx Serial Data
Tx Serial Data
<n>
<n>
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