Title :
A multirate transceiver IC for four-wire full-duplex data transmission
Author :
Buttle, Ken ; Takatori, Hiroshi ; Shih, Cheng-Chung ; Shafir, Haim
Author_Institution :
Level One Commun., Inc., Folsom, CA, USA
fDate :
12/1/1991 12:00:00 AM
Abstract :
A CMOS IC transceiver for full-duplex data transmission at 14 data rates is described. At the highest rate of 72 kb/s, two of these chips communicate on a four-wire twisted-pair telephone loop with loss at 36 kHz of up to 48 dB. The chip performs all line driving, timing recovery, and data recovery functions with only 11 passive external line interface components. The transceiver can converge on all digital data service (DDS) lines. sending and receiving unscrambled data without the need for a training sequence. The chip was fabricated in a 2-μm, double-polysilicon, double-metal process with an area of 49 mm2 . Power consumption is 200 mW from the single 5-V supply
Keywords :
CMOS integrated circuits; data communication equipment; digital signal processing chips; subscriber loops; transceivers; 11 passive external line interface components; 2 micron; 200 mW; 36 kHz; 48 dB; 5 V; 72 kbit/s; CMOS; chip area; data rates; data recovery functions; digital data service; double-metal process; double-polysilicon; four-wire full-duplex data transmission; four-wire twisted-pair telephone loop; line driving; multirate transceiver IC; power consumption; timing recovery; unscrambled data; CMOS digital integrated circuits; CMOS integrated circuits; Data communication; Decision feedback equalizers; Digital circuits; Digital filters; Energy consumption; Telephony; Timing; Transceivers;
Journal_Title :
Solid-State Circuits, IEEE Journal of
