ACS401

Acapella Optical Modem IC ACS401 Main Features: * Enables up to four full-duplex serial transmission channels through a single fiber optic cable, providing eight virtual fiber paths. * Two additional low speed handshake signals. * Supports Ping Pong LED (PPLED) and LASER Duplex Devices (LDD) for single fiber applications or dual fiber applications using low cost LED/LASER emitters and PIN Diode receiver. * Link lengths up to 95 km with appropriate Laser. * Maximum data rate 128 kbps - optimised for talk-set applications. * Typical 7 mA (average) current consumption, including LASER drive current. * Digital mode, allowing the user to add an external amplifier. Also enables the ACS401 to be used in non-fiber applications. * Bit Error Rate (BER) of 10-9 Equivalent block diagram of ACS401. TRC TxD1 TxD2 TxD3 TxD4 TxCL RxD1 RxD2 RxD3 RxD4 RxCL VA+ VD+ GND 4 3 4 Digital Filter FIFO Compress 3B4B Encoder LAP PPLED LED Driver PIN Receiver Digital Filter FIFO Decompress 3B4B Decoder LAN PINP PINN Single Fiber CNT GND Control Data Status Control Logic XTAL XO1 XI1 XO2 XI2 HBT CLK9 ERRC ERRL DR(1:3) DM(1:3) DP(1:4) PORB CKC General Description: The ACS401 is a complete optical-modem controller/ driver/receiver IC, supporting various user programmable, fullduplex, synchronous data rates to 128 kbps over a single fiber. Communicating modems automatically maintain synchronisation with each other such that the receive phase of one modem is lined up with the transmit phas...