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1. GTS Transceiver Overview
2. GTS Transceiver Architecture
3. Implementing the GTS PMA/FEC Direct PHY Intel FPGA IP
4. Implementing the GTS System PLL Clocks Intel FPGA IP
5. Implementing the GTS Reset Sequencer Intel FPGA IP
6. GTS PMA/FEC Direct PHY Intel FPGA IP Example Design
7. Design Assistance Tools
8. Debugging GTS Transceiver Links with Transceiver Toolkit
9. Document Revision History for the GTS Transceiver PHY User Guide
3.1. IP Overview
3.2. Designing with the GTS PMA/FEC Direct PHY Intel FPGA IP
3.3. Configuring the GTS PMA/FEC Direct PHY Intel FPGA IP
3.4. Signal and Port Reference
3.5. Bit Mapping for PMA and FEC Mode PHY TX and RX Datapath
3.6. Clocking
3.7. Custom Cadence Generation Ports and Logic
3.8. Asserting reset
3.9. Bonding Implementation
3.10. Configuration Register
3.11. Configuring the GTS PMA/FEC Direct PHY Intel FPGA IP for Hardware Testing
3.12. Configurable Quartus® Prime Software Settings
3.13. Hardware Configuration Using the Avalon® Memory-Mapped Interface
3.4.1. TX and RX Parallel and Serial Interface Signals
3.4.2. TX and RX Reference Clock and Clock Output Interface Signals
3.4.3. Reset Signals
3.4.4. FEC Signals
3.4.5. Custom Cadence Control and Status Signals
3.4.6. RX PMA Status Signals
3.4.7. TX and RX PMA and Core Interface FIFO Signals
3.4.8. Avalon Memory Mapped Interface Signals
3.8.1. Reset Signal Requirements
3.8.2. Power On Reset Requirements
3.8.3. Reset Signals—Block Level
3.8.4. Run-time Reset Sequence—TX
3.8.5. Run-time Reset Sequence—RX
3.8.6. Run-time Reset Sequence—TX + RX
3.8.7. Run-time Reset Sequence—TX with FEC
3.8.8. RX Data Loss/CDR Lock Loss (Auto-Recovery)
3.8.9. TX PLL Lock Loss
6.1. Instantiating the GTS PMA/FEC Direct PHY Intel FPGA IP
6.2. Generating the GTS PMA/FEC Direct PHY Intel FPGA IP Example Design
6.3. GTS PMA/FEC Direct PHY Intel FPGA IP Example Design Functional Description
6.4. Simulating the GTS PMA/FEC Direct PHY Intel FPGA IP Example Design Testbench
6.5. Compiling the GTS PMA/FEC Direct PHY Intel FPGA IP Example Design
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3.3.3.1. TX PMA Interface Parameters
Figure 41. TX PMA Interface Parameters in Parameter Editor
Parameter | Values | Description |
---|---|---|
TX PMA Interface Parameters | ||
TX PMA interface FIFO mode | Register Elastic |
Selects the TX PMA Interface FIFO mode. Default value is Elastic. Refer to PMA Direct Mode Support for more information, |
Enable tx_pmaif_fifo_empty port | On/Off | Enables the port that indicates the TX PMA Interface FIFO's empty condition. Default value is Off. |
Enable tx_pmaif_fifo_pempty port | On/Off | Enables the port that indicates the TX PMA Interface FIFO's partially empty condition. Default value is Off. |
Enable tx_pmaif_fifo_pfull port | On/Off | Enables the port that indicates the TX PMA Interface FIFO's partially full condition. Default value is Off. |
TX Core Interface Parameters | ||
Enable custom cadence generation ports and logic | On/Off | Enables optional custom cadence generation (CCG) logic and ports (o_tx_cadence, i_tx_cadence_fast_clk, i_tx_cadence_slow_clk). CCG logic can be enabled when Datapath clocking mode is set to System PLL. Default value is Off. Refer to Custom Cadence Generation Ports and Logic for more information. |
Enable tx_cadence_slow_clk_locked port | On/Off | If i_tx_cadence_slow_clk is not directly coming from TX PLL (word clock/TX user clock), but rather comes from another clock source, you must turn on this option in the parameter editor. i_tx_cadence_slow_clk_locked port must be driven by the PLL locked output of the other PLL source used for slow clock. Default value is Off. |
TX core interface FIFO mode | Phase Compensation Elastic 26 |
Specifies the mode for the TX Core Interface FIFO. Default value is Phase Compensation. Elastic mode is only supported for PMA Clocking mode. |
Enable TX double width transfer | On/Off |
Enables double width TX data transfer mode. In this mode, the core logic can be clocked with half rate clock. Default value is Off. |
Enable tx_fifo_full port | On/Off | Enables the optional o_tx_fifo_full status output port. This signal indicates when the TX core FIFO has reached the full threshold. This signal is synchronous with o_tx_clkout. Default value is Off. |
Enable tx_fifo_empty port | On/Off | Enables the optional o_tx_fifo_empty status output port. This signal indicates when the TX core FIFO has reached the empty threshold. This signal is synchronous with o_tx_clkout. Default value is Off. |
Enable tx_fifo_pfull port | On/Off | Enables the optional o_tx_fifo_pfull status output port. This signal indicates when the TX core FIFO has reached the specified partially full threshold. Default value is Off. |
Enable tx_fifo_pempty port | On/Off | Enables the optional o_tx_fifo_pempty status output port. This signal indicates when the TX core FIFO has reached the specified partially empty threshold. Default value is Off. |
TX Clock Options | ||
Selected tx_clkout clock source | Word Clock TX User Clock Sys PLL Clock |
Specifies the o_tx_clkout output port source. Default value is Sys PLL Clock. |
tx_clkout clock div by | 1, 2, 4 | Selects the TX clock output divider setting that divides out the o_tx_clkout output port source. Default value is 1. |
Frequency of tx_clkout | Output | Displays the frequency of o_tx_clkout in MHz based on o_tx_clkout source selection. |
Enable tx_clkout2 port | On/Off | Enables the optional o_tx_clkout2 output clock. Default value is Off. |
Selected tx_clkout2 clock source | Word Clock TX User Clock Sys PLL Clock |
Specifies the o_tx_clkout2 output port source. Default value is Word Clock. |
tx_clkout2 clock div by | 1, 2, 4 | Selects the TX clock out 2 divider setting that divides out the o_tx_clkout2 output port source. Default value is 1. |
Frequency of tx_clkout2 | Output | Displays the frequency of o_tx_clkout2 in MHz based on o_tx_clkout2 source selection and o_tx_clkout2 clock divide by factor. |
TX User Clock Settings | ||
TX user clock div by | 12 to 139.5 | Division factor from the Fvco of the TX PLL VCO to TX user clock. Values from 12 to 139.5 are acceptable in 0.5 increments. Default value is 100. |
TX user clock frequency | Output | Displays the frequency of the TX user clock in MHz based on the TX user clock divide by factor. |
26 Elastic mode for TX/RX Core Interface FIFO is planned to be supported in a future release.