AHA4540-EVB

Features:

ENCODER:
  • Clock and Data Serial Input, or 8-bit Parallel
  • 172 Mbits/sec channel rate maximum
  • Serial-to-Parallel, and Parallel-to-Serial logic on board
  • Clock and Data Serial Output, or 8-bit Parallel
DECODER:
  • 16-bit interface inputs (4 x 4) soft metrics, or up to 8-bit I and Q symbol data
  • Outputs Serial data stream or 8-bit Parallel
  • 172 Mbits/sec channel rate maximum
CLOCKING SCHEMES:
  • Encoder input clock is user selectable from either channel side or data side
  • Decoder clock is from the channel side
  • Flow control with Encoded interface master
  • Flow control with Decoded interface master
GENERAL:
  • Configuration and Status via RS232 Port connected to Personal Computer
  • Windows GUI control and monitoring software
  • Requires 3.3V, 1.8V, and 16V power supplies
INTERFACES:
  • Encode Data In
    One bit serial and clock at 172 Mbits/sec
    8-bit parallel data in at 20 MBytes/sec data rate
  • Encode Data Out
    One bit serial and clock at 172 Mbits/sec maximum channel rate
    Up to 8-bits per symbol from AHA4540 symbol mapper
  • Decode Data In
    One bit serial and clock at 172 Mbits/sec maximum channel rate
    Differential 16-bit interface inputs (4 x 4) soft metrics, or 8-bit I and Q symbol data including handshake signals and clock input
  • Decode Data Out
    One bit serial and clock at 172 Mbits/sec times code rate, maximum is 172 Mbits/sec
    8-bit wide parallel output at maximum data rate of 20 MBytes/sec
  • Form Factor
    Six layer board, 5.3 x 8.8 inches
    Board operates as standalone and connects to a PC RS232 port for configuration and monitoring.


Description

The AHA4540-EVB is an evaluation board that can be integrated into a communications system for evaluation of the AHA4540 Turbo Product Code encoder/decoder device at real system speeds. Alternatively, it can be connected to a Bit Error Rate Tester (BERT) for evaluating the performance of the AHA4540-EVB with a user supplied communications channel. This board facilitates user integration of AHA's Turbo Product Code technology at OC-3 data rates.

The AHA4540-EVB evaluation board includes one AHA4540 device supporting full duplex encoding and decoding of a serial data stream, I and Q symbol data, or soft metrics using Turbo Product Codes. The EVB supports standalone encoding or decoding as well as full duplex simultaneous encoding/decoding. The AHA4540-EVB is fully programmable to cover a wide range of configurations. All registers in the AHA4540 device are programmable and readable through an RS-232 serial port connection to a PC. Communication software is provided with the evaluation board for configuration and control from the host personal computer.

AHA4540-EVB also supports numerous selftest modes that allow loop back tests at different stages and BERT-like tests where the board generates pseudo random test patterns.