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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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2.3.1.1. Transmitter Buffer
A simplified transmitter buffer termination scheme is shown in the following figure.
Figure 15. Simplified TX Buffer Termination
The transmitter buffer can be programmed to support the taps listed in the following table.
Parameter | Cursor | Rule | Increment and Decrement Size | |
---|---|---|---|---|
Minimum | Maximum | |||
pre_tap_2 | C-2 | 0 | +7 | 1.0 |
pre_tap_1 | C-1 | 0 | +15 | 1.0 |
main_tap | C0 14 | 0 | +55 | 1.0 |
post_tap_1 | C+1 | 0 | +19 | 1.0 |
Note: To determine the legal combination of TX equalizer parameter settings, refer to the GTS Transceiver TX Equalization Tool
14 C0 = main_tap + 1 - pre_tap_1 -pre_tap_2 - post_tap_1