资 源 简 介
The HD-6408 is a CMOS/LSI Manchester Encoder/Decoderfor creaTIng a very high speed asynchronous serial data bus.The Encoder converts serial NRZ data (typically from a shiftregister) to Manchester II encoded data, adding a sync pulseand parity bit. The Decoder recognizes this sync pulse andidenTIfies it as a Command Sync or a Data Sync. The data isthen decoded and shifted out in NRZ code (typically into ashift register). Finally, the parity bit is checked. If there wereno Manchester or parity errors the Decoder responds with avalid word signal. The Decoder puts the Manchester code tofull use to provide clock recovery and excellent noiseimmunity at these very high speeds.The HD-6408 can be used in many commercial applicaTIonssuch as security systems, environmental control systems,serial data links and many others. It uTIlizes a single 12 xclock and achieves data rates of up to one million bits persecond with a very minimum overhead of only 4 bits out of20, leaving 16 bits for data.
