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3.2. PMA Adaptation Parameters
After device configuration, you may need to trigger PMA adaptation on the RX interface to achieve optimal performance. The PMA interface performs adaptation for initial adaptation and continuous adaptation which runs continuously in background.
Figure 5. PMA Adaptation OptionsYou specify settings on the PMA Adaptation tab for both initial and continuous adaptation. PMA Adaptation is only available for E-tile variants.
Parameter | Value | Description |
---|---|---|
Enable adaptation load soft IP | On/Off | Enables PMA adaptation parameter customization. |
PMA adaptation select | PAM4_56Gbps_LR PAM4_56Gbps_VSR NRZ_28Gbps_LR NRZ_28Gbps_VSR NRZ_10Gbps_25/15/10dB |
Selects pre-defined PMA configuration parameters. |
Parameter | Value | Description |
---|---|---|
GS1 | Fw_default, 0, 1, 2, 3 | CTLE Low Frequency Gain Shaping 1. |
GS2 | Fw_default, 0, 1, 2, 3 | CTLE Low Frequency Gain Shaping 2. |
RF_B1 | Fw_default, 0, 1, 2, 3, 4, 5, 6, 7, 8 | RF_B1 Setting. |
RF_B1 Fix/Adaptable | Fixed, Adaptable | RF_B1 Setting. |
RF_B0 | Fw_default, 0, 1, 2, 3, 4, 5 | RF_B0 Setting. |
RF_B0 Fix/Adaptable | Fixed, Adaptable | RF_B0 Setting. |
RF_A | Fw_default, 100, 110, 120, 130, 140, 150, 160 | RF_A Setting. |
GAINLF | Fw_default, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 | CTLE Low Frequency Gain. |
GAINLF Fixed/Adaptable | Fixed, Adaptable | CTLE Low Frequency Gain. |
CTLE LF Min | Fw_default, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 | Limits CTLE LF minimum. |
CTLE LF Max | Fw_default, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 | Limits CTLE LF maximum. |
GAINHF | Fw_default, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 | Inputs CTLE High Frequency Gain. |
GAINHF Fixed/Adaptable | Fixed, Adaptable | Inputs CTLE High Frequency Gain - Fix or Adaptable options. |
CTLE HF Min | Fw_default, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 | Limits CTLE HF minimum. |
CTLE HF Max | Fw_default, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 | Limits CTLE HF maximum. |
RF_P2 | Fw_default, -10, -9, -8, -7, -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 | RF_P2 setting. |
RF_P2 Fixed/Adaptable | Fixed, Adaptable | RF_P2 setting - Fix or Adaptable options. |
RF_P2 Min | Fw_default, -10, -9, -8, -7, -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 | Limits RF_P2 minimum. |
RF_P2 Max | Fw_default, -10, -9, -8, -7, -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 | Limits RF_P2 maximum. |
RF_P1 | Fw_default, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 | RF_P1 setting. |
RF_P1 Fixed/Adaptable | Fixed, Adaptable | RF_P1 setting - Fix or Adaptable options. |
RF_P1 Min | Fw_default, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 | Limits RF_P1 minimum. |
RF_P1 Max | Fw_default, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 | Limits RF_P1 maximum. |
RF_P0 | Fw_default, -15, -14, -13, -12, -11, -10, -9, -8, -7, -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 | Sets RF_P0. |
RF_P0 Fixed/Adaptable | Fixed, Adaptable | Limits RF_P0 - Fix or Adaptable options. |
RF_B0T | Fw_default, 10, 15, 20, 25, 30, 35, 40, 45, 50 | Controls the rate RF_B0 adapts. |
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