AC164142 Microchip Technology, AC164142 Datasheet - Page 21

• Manufacturer Part Number: AC164142
• Description: Consumer-band BPSK 7.2kbps PLM PICtail Plus Daughter Board Other
• Manufacturer: Microchip Technology
• Series: PICtail™ Plusr

Specifications of AC164142

• Kit Application Type: Communication
• Silicon Family Name: DsPIC
• Kit Contents: 2x Power-Line Soft-Modem PICtail Plus Daughter Boards, 2x High Voltage Adapter Cables, Info Sheet
• Features: Operates On 5V And 9V
• Rohs Compliant: Yes
• Processor To Be Evaluated: dsPIC33F
• Processor Series: dsPIC33F
• Operating Supply Voltage: 5 V, 9 V
• Featured Product: AC164142 PICtail™ Plus Daughter Board
• Main Purpose: Interface, Power Line Transceiver
• Embedded: No
• Utilized Ic / Part: -
• Primary Attributes: AC Power Line Transceiver, BPSK 7.2 Kbps
• Secondary Attributes: Requires Explorer 16 Boards
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

© 2011 Microchip Technology Inc.
PLM_FEC
This setting enables the Forward Error Correction (FEC) feature. Please note that the
Viterbi algorithm used for the FEC feature requires significant processing power, espe-
cially at higher code constraint lengths. At a carrier frequency of 129.6 kHz, no room is
left to run FEC and this option must be disabled.
PLM_QUALITY_MEASURE
This setting enables received signal quality estimation and determines a 16-bit quality
metric calculated during the initial bytes after the last byte synchronization has been
found. The metric is an average value of absolute values of demodulated signal sam-
ples, taken in the instance of bit decisions during the first 16 bytes after byte
synchronization has been found. A value greater then 0x7F00 means perfect quality.
PLM_LOCAL_ECHO
This setting, if enabled, allows the modem to receive its own transmissions.
PLM_DEBUG_MODE
This setting enables various debugging modes and normally should be off (set to
DEBUG OFF). The other modes supported are:
• Signal Logging mode, where signal samples on various demodulation stages can
• Performance Measurement mode in which a GPIO pin (RG0) is set high
PLM_RAM_SAVING
If enabled, this setting causes the modem code to use less RAM (reduced by a third)
at a cost of consuming more processing power (2 to 4 MIPS). In case this option is
enabled, a processing buffer size must also be selected by manually setting
PLM_DEM_BLOCK_LEN. The smaller the buffer, the smaller the amount of RAM used;
however, the performance hit is more significant.
PLM_ADC
This setting allows the selection of the ADC, in case the dsPIC33F DSC device used
has more than one ADC module.
PLM_USE_DMA
This setting, if set to ‘
there are good reasons not to (e.g., no DMA support in the selected CPU model), DMA
should be used for best performance.
PLM_FC
This setting sets the carrier frequency and must not be changed while using the
daughter board.
PLM_BAUD
This setting sets the modem baud rate. Available options are: 1200, 2400, 3600, 4800,
5400, and 7200 (default).
be saved in a circular buffer
whenever the processor is executing low-level modem code
1
’, causes the code to be compiled with DMA support. Unless
DS70656A-page 21