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The GPON (G.984) Reed-Solomon code is fully compliant with the GPON (G.984)
standard. It supports the upstream data rate of 2488.32 Mbps and 1244.16 Mbps
and the downstream data rate of 2488.32 Mbps, 1244.16 Mbps, 622.08 Mbps, and
155.52 Mbps. It takes 8-bit, 16-bit, or 32-bit input to accormodate different
date rates. The last short code word is handled inside the codec according to
the standard to make it easier for system integration. Resource usage and
performance parameters are listed in Table 1 for the encoder and in Table 2
for the decoder.
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Table 1. Resource Usage And Performance Parameters Of The Encoder
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| Product |
n, k, t |
Platform |
CLB Slices |
Block Ram |
Clock Speed |
Data Rate |
Latency |
| GPON Encoder |
Fixed n, k, t |
Virtex II |
1363 |
9 |
150 MHz |
48000 Mbps |
263 Clock Cycle |
| Spartan III |
1341 |
9 |
125 MHz |
4000 Mbps |
263 Clock Cycle |
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Table 2. Resource Usage And Performance Parameters Of The Decoder
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| Product |
n, k, t |
Platform |
CLB Slices |
Block Ram |
Clock Speed |
Data Rate |
Latency |
| GPON Decoder |
Fixed n, k, t |
Virtex II |
3728 |
24 |
135 MHz |
4320 Mbps |
718 Clock Cycles |
| Spartan III |
3766 |
24 |
115 MHz |
3680 Mbps |
718 Clock Cycles |
Availability And Deliverables
The Reed-Solomon code is available now. Deliverables include source code in VHDL
or Verilog, netlist file for Xilinx FPGA, testbenches in VHDL or Verilog, and
C/C++ source code for modeling and verification.
Please
contact us
for more information.
Data Sheet
Please use the following link to download the data sheet.
2.5 Gbps GPON (G.984) FEC Encoder
2.5 Gbps GPON (G.984) FEC Decoder
FREE Download For Verification
We have designed a FREE testbench netlist for Xilinx Virtex II and Spartan III. It is a full
version of the testbench, including the random number generator, the RS encoder, the RS decoder,
and some control logic. An entity declaration in VHDL, a module declaration in Verilog, and
a user guide are also included in the download files. You can use the following link to
download the files and implement the testbench in your own hardware and verify the functionality
and check the performance of our product. To use the free download files, you agree to be bound
by this
Term Of Use.
FREE Download For Virtex II
FREE Download For Spartan III
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