F-Tile Architecture and PMA and FEC Direct PHY IP User Guide
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3.1.1. PMA Direct Supported Modes
The F-Tile PMA/FEC Direct PHY IP supports the following for PMA Direct mode:
- Supports FGT with NRZ and PAM4 modulation. 19
- Supports FHT with NRZ and PAM4 modulation
- Supports PMA clocking mode and System PLL clocking mode
- Supports Duplex, TX simplex, and RX simplex modes
- Supports TX simplex and RX simplex for both PMA Clocking and System PLL Clocking modes. Supports 8, 10, 16, 20, 32 and 64-bit PMA data widths for simplex mode.
- Supports bonding mode for NRZ and PAM4 modulation modes
- Supports configurable FIFO modes: PMA interface FIFO, F-tile interface FIFO, Core interface FIFO-elastic, phase compensation, and register modes
- Supports configuring multiple hard IP block PMA and FEC instances within one IP instance
- Supports TX and RX de-skew if the number of streams per PMA exceeds one
- Supports up to 12 Preset modes.
| PMA Modulation | PMA Mode | Clocking Mode | Double Width/ Single Width | PMA Interface Width | PMA Interface FIFO (TX/RX) | F-Tile Interface FIFO (TX/RX20) | Core Interface FIFO (TX/RX) | 
|---|---|---|---|---|---|---|---|
| PAM4 | FGT | System Clocking | DW | 64 | Elastic/ Elastic | Phase Compensation/ Register | Phase Compensation/ Phase Compensation | 
| SW | 32 | Elastic/ Elastic | Phase Compensation/ Register | Phase Compensation/ Phase Compensation | |||
| PMA Clocking | DW | 32 | Phase Compensation/ Register | TX: Register/ Phase Compensation RX: Register | TX: Phase Compensation/ Elastic| RX: Phase Compensation/ Elastic | ||
| DW | 64 | Elastic/ Elastic | Phase Compensation/ Register | Phase Compensation/ Phase Compensation | |||
| FHT | System Clocking | DW | 64, 128 | Elastic/ Elastic | Phase Compensation/ Register | Phase Compensation/ Phase Compensation | |
| PMA Clocking | DW | 64, 128 | Elastic/ Elastic | Phase Compensation/ Register | Phase Compensation/ Phase Compensation | ||
| NRZ | FGT | System Clocking | SW | 8,10, 16, 20, 32 | Elastic/ Elastic | Phase Compensation/ Register | Phase Compensation/Phase Compensation | 
| DW | 8,10, 16, 20, 32 | Elastic/ Elastic | Phase Compensation/ Register | Phase Compensation/ Phase Compensation | |||
| PMA Clocking | SW | 10 | Phase Compensation/ Register | Register/ Register | Phase Compensation/ Phase Compensation | ||
| 10,20, 32 | Phase Compensation/ Register | Register/ Register | Elastic/ Elastic | ||||
| 16, 20, 32 | Phase Compensation/ Register | TX: Register/ Phase Compensation| RX: Register | Phase Compensation/ Phase Compensation | ||||
| DW | 16, 20, 32 | Phase Compensation/ Register | TX: Register/ Phase Compensation| RX: Register | Phase Compensation/ Phase Compensation | |||
| 20, 32 | Phase Compensation/ Register | Register/ Register | Elastic/ Elastic | ||||
| FHT | System Clocking | DW | 32, 64 | Elastic/ Elastic | Phase Compensation/ Register | Phase Compensation/ Phase Compensation | |
| SW | 32 | Elastic/ Elastic | Phase Compensation/ Register | Phase Compensation/ Phase Compensation | |||
| PMA Clocking | SW / DW | 32 | Phase Compensation/ Register | TX: Register/ Phase Compensation| RX: Register | Phase Compensation/ Phase Compensation OR Elastic/ Elastic | ||
| DW | 64 | Elastic/ Elastic | Phase Compensation/ Register | Phase Compensation/ Phase Compensation |