5.4.2 PRIME Coupling Configuration
In the PRIME firmware packages provided by Microchip, the Transmission Coupling Configuration parameters for the reference designs are located in the path: asf\thirdparty\prime_ng\phy\atpl360\coup_tx_config\coup_params.
Each project applies the appropriate values for the corresponding PLC device and board. Each PRIME channel needs its own calibration, and the parameters must be configured every time the channel is changed.
The PL360 parameters related to the Transmission Coupling Configuration are described
in:
- ATPL360_REG_MAX_RMS_TABLE_HI (0x400A)
- ATPL360_REG_MAX_RMS_TABLE_VLO (0x400B)
- ATPL360_REG_THRESHOLDS_TABLE_HI (0x400C)
- ATPL360_REG_THRESHOLDS_TABLE_LO (0x400D)
- ATPL360_REG_THRESHOLDS_TABLE_VLO (0x400E)
- ATPL360_REG_PREDIST_COEF_TABLE_HI (0x400F)
- ATPL360_REG_PREDIST_COEF_TABLE_LO (0x4010)
- ATPL360_REG_PREDIST_COEF_TABLE_VLO (0x4011)
- ATPL360_REG_PREDIST_COEF_TABLE_HI_2 (0x403F)
- ATPL360_REG_PREDIST_COEF_TABLE_LO_2 (0x4040)
- ATPL360_REG_PREDIST_COEF_TABLE_VLO_2 (0x4041)
- ATPL360_REG_GAIN_TABLE_HI (0x4012)
- ATPL360_REG_GAIN_TABLE_LO (0x4013)
- ATPL360_REG_GAIN_TABLE_VLO (0x4014)
- ATPL360_REG_DACC_TABLE_CFG (0x4015)
- ATPL360_REG_PLC_IC_DRIVER_CFG (0x4044)
The default values of these parameters depend on the PL360 PRIME binary used (see ATPL360_REG_VERSION_NUM (0x4003)) and correspond to the
PL360MB evaluation kit with the appropriate coupling board for the default channel:
- Single Channel only: PLCOUP007; Channel 1
- Single/Double Channel: PLCOUP006; Channels 3&4