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Ixiasoft
Visible to Intel only — GUID: nik1398984243147
Ixiasoft
15.5.1. Common Interface Ports for Arria V GZ Native PHY
This section describes the interface ports for the Arria V GZ native PHY.
Common interface consists of reset, clock signals, serial interface ports, control and status ports, parallel data ports, PMA ports and reconfig interface ports. The following figure illustrates these ports.
Name | Direction | Description |
---|---|---|
Clock Inputs and Output Signals | ||
tx_pll_refclk [<r> -1:0] |
Input | The reference clock input to the TX PLL. |
tx_pma_clkout [<n> -1:0] |
Output | TX parallel clock output from PMA |
rx_pma_clkout [<n> -1:0] |
Output | RX parallel clock (recovered clock) output from PMA |
rx_cdr_refclk [<n> -1:0] |
Input | Input reference clock for the RX PFD circuit. |
ext_pll_clk [ <p> -1:0] | Input | This optional signal is created when you select the Use external TX PLL option. If you instantiate a fractional PLL which is external to the Native PHY IP, then connect the output clock of this PLL to ext_pll_clk. |
Resets | ||
pll_powerdown [<n> -1:0] |
Input | When asserted, resets the TX PLL. Active high, edge sensitive reset signal. By default, the Arria V GZ Native Transceiver PHY IP Core creates a separate pll_powerdown signal for each logical PLL. However, the Fitter may merge the PLLs if they are in the same transceiver bank. PLLs can only be merged if their pll_powerdown signals are driven from the same source. If the PLLs are in separate transceiver banks, you can choose to drive the pll_powerdown signals separately. |
tx_analogreset [<n> -1:0] |
Input | When asserted, resets for TX PMA, TX clock generation block, and serializer. Active high, edge sensitive reset signal. |
tx_digitalreset [<n> -1:0] |
Input | When asserted, resets the digital components of the TX datapath. Active high, edge sensitive reset signal.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. |
rx_analogreset [<n> -1:0] |
Input | When asserted, resets the RX CDR, deserializer, Active high, edge sensitive reset signal. |
rx_digitalreset [<n> -1:0] |
Input | When asserted, resets the digital components of the RX datapath. Active high, edge sensitive reset signal. |
Parallel Data Ports | ||
tx_pma_parallel_data [<n> 80-1:0] |
Input | TX parallel data for the PMA Direct datapath. Driven directly from the FPGA fabric to the PMA. Not used when you enable either the Standard or 10G PCS datapath. |
rx_pma_parallel_data [<n> 80-1:0] |
Output | RX PMA parallel data driven from the PMA to the FPGA fabric. Not used when you enable either the Standard or 10G PCS datapath. |
tx_parallel_data [<n> 64-1:0] |
Input | PCS TX parallel data. Used when you enable either the Standard or 10G datapath. For the Standard datapath, if you turn on Enable simplified data interface , tx_parallel_data includes only the data and control signals necessary for the current configuration. Dynamic reconfiguration of the interface is not supported. For the 10G PCS, if the parallel data interface is less than 64 bits wide, the low‑order bits of tx_parallel_data are valid. For the 10G PCS operating in 66:40 Basic mode, the 66 bus is formed as follows: { tx_parallel_data[63:0],tx_10g_control[0], tx_10g_control[1]}. For the Standard PCS, refer to Table 288 for bit definitions. Refer to Table 289 for various parameterizations. |
rx_parallel_data [<n> 64-1:0] |
Output | PCS RX parallel data. Used when you enable either the Standard or 10G datapath. For the Standard datapath, if you turn on Enable simplified data interface , rx_parallel_data includes only the data and control signals necessary for the current configuration. Dynamic reconfiguration of the interface is not supported. For the 10G PCS, if the parallel data interface is less than 64 bits wide, the low‑order bits of rx_parallel_data are valid. For the 10G PCS operating in 66:40 mode, the 66 bus is formed as follows: { rx_parallel_data[63:0],rx_10g_control[0], rx_10g_control[1]}. For the Standard PCS, refer to Table 290 for bit definitions. Refer to Table 291 for various parameterizations. |
QPI | ||
tx_pma_qpipullup | Input | Control input port for Quick Path Interconnect (QPI) applications. When asserted, the transmitted pulls the output signal to high state. Use this port only for QPI applications. |
tx_pma_qpipulldn | Input | Control input port for Quick Path Interconnect (QPI) applications. This is an active low signal. When asserted, the transmitter pulls the output signal to low state. Use this port only for QPI applications. |
tx_pma_txdetectrx | Input | When asserted, the RX detect block in the TX PMA detects the presence of a receiver at the other end of the channel. After receiving a tx_pma_txdetectrx request, the receiver detect block initiates the detection process. Only for QPI applications. |
tx_pma_rxfound | Output | Indicates the status of an RX detection in the TX PMA. Only for QPI applications. |
rx_pma_qpipulldn | Input | Control input port for Quick Path Interconnect (QPI) applications. This is an active low signal. When asserted, the receiver pulls the input signal to low state. Use this port only for QPI applications. |
TX and RX Serial Ports | ||
tx_serial_data [<n> -1:0] |
Output | TX differential serial output data. |
rx_serial_data [<n> -1:0] |
Input | RX differential serial output data. |
Control and Status Ports | ||
rx_seriallpbken [<n> -1:0] |
Input | When asserted, the transceiver enters loopback mode. Loopback drives TX data to the RX interface. |
rx_set_locktodata [<n> -1:0] |
Input | When asserted, programs the RX CDR to manual lock to data mode in which you control the reset sequence using the rx_setlocktoref and rx_setlocktodata. Refer to Reset Sequence for CDR in Manual Lock Mode in Transceiver Reset Control in Arria V GZ Devices for more information about manual control of the reset sequence. |
rx_set_locktoref [<n> -1:0] |
Input | When asserted, programs the RX CDR to manual lock to reference mode in which you control the reset sequence using the rx_setlocktoref and rx_setlocktodata. Refer to Reset Sequence for CDR in Manual Lock Mode in Transceiver Reset Control in Arria V GZ Devices for more information about manual control of the reset sequence. |
pll_locked [<p> -1:0] |
Output | When asserted, indicates that the PLL is locked to the input reference clock. |
rx_is_lockedtodata [<n> -1:0] |
Output | When asserted, the CDR is locked to the incoming data. |
rx_is_lockedtoref [<n> -1:0] |
Output | When asserted, the CDR is locked to the incoming reference clock. |
rx_clkslip [<n> -1:0] |
Input | When you turn this signal on, deserializer performs a clock slip operation to achieve word alignment. The clock slip operation alternates between skipping 1 serial bit and pausing the serial clock for 2 cycles to achieve word alignment. As a result, the period of the parallel clock could be extended by 2 unit intervals (UI) during the clock slip operation. This is an optional control input signal. |
Reconfig Interface Ports | ||
reconfig_to_xcvr [(<n> 70-1):0] |
Input | Reconfiguration signals from the Transceiver Reconfiguration Controller. <n> grows linearly with the number of reconfiguration interfaces. |
reconfig_from_xcvr [(<n> 46-1):0] |
Output | Reconfiguration signals to the Transceiver Reconfiguration Controller. <n> grows linearly with the number of reconfiguration interfaces. |
tx_cal_busy [<n> -1:0] |
Output | When asserted, indicates that the initial TX calibration is in progress. It is also asserted if reconfiguration controller is reset. It will not be asserted if you manually re-trigger the calibration IP. You must hold the channel in reset until calibration completes. |
rx_cal_busy [<n> -1:0] |
Output | When asserted, indicates that the initial RX calibration is in progress. It is also asserted if reconfiguration controller is reset. It will not be asserted if you manually re-trigger the calibration IP. |
TX Data Word | Description |
---|---|
Signal Definitions with 8B/10B Enabled | |
tx_parallel_data[7:0] | TX data bus |
tx_parallel_data[8] | TX data control character |
tx_parallel_data[9] | Force disparity, validates disparity field. |
tx_parallel_data[10] | Specifies the current disparity as follows:
|
Signal Definitions with 8B/10B Disabled | |
tx_parallel_data[9:0] | TX data bus |
tx_parallel_data[10] | Unused |
Configuration | Bus Used Bits |
---|---|
Single word data bus, byte deserializer disabled | [10:0] (word 0) |
Single word data bus, byte serializer enabled | [32:22], [10:0] (words 0 and 2) |
Double word data bus, byte serializer disabled | [21:0] (words 0 and 1) |
Double word data bus, byte serializer enabled | [43:0] (words 0-3) |
RX Data Word | Description |
---|---|
Signal Definitions with 8B/10B Enabled | |
rx_parallel_data[7:0] | RX data bus |
rx_parallel_data[8] | RX data control character |
rx_parallel_data[9] | Error Detect |
rx_parallel_data[10] | Word Aligner / synchronization status |
rx_parallel_data[11] | Disparity error |
rx_parallel_data[12] | Pattern detect |
rx_parallel_data[14:13] | The following encodings are defined:
|
rx_parallel_data[15] | Running disparity value |
Signal Definitions with 8B/10B Disabled | |
rx_parallel_data[9:0] | RX data bus |
rx_parallel_data[10] | Word Aligner / synchronization status |
rx_parallel_data[11] | Disparity error |
rx_parallel_data[12] | Pattern detect |
rx_parallel_data[14:13] | The following encodings are defined:
|
rx_parallel_data[15] | Running disparity value |
Configuration | Bus Used Bits |
---|---|
Single word data bus, byte deserializer disabled | [15:0] (word 0) |
Single word data bus, byte serializer enabled | [47:32], [15:0] (words 0 and 2) |
Double word data bus, byte serializer disabled | [31:0] (words 0 and 1) |
Double word data bus, byte serializer enabled | [63:0] (words 0-3) |