TNETEL1400

EtherLoop

™ TRANSCEIVER

SPHS004A – FEBRUARY 1999 – REVISED MARCH 1999

1

POST OFFICE BOX 655303

(RX) Gain Via Digital Interface

Modem Power Consumption in Multiplexed

Applications

Damage, a Simulated Static Discharge of

1 kV From a 100-pF Capacitor Applied

Through a 1.5-k

Ω Resistor With Respect to

Ambient

– Allows Operation in Central Office and

Distributed-Server Modem Applications

TXGAIN3

TXGAIN2

TXGAIN1

TXGAIN0

ANG

REFP

RXBIAS

TXBIAS

24

23

22

21

20

19

18

17

16

15

14

13

37

38

39

40

41

42

43

44

45

46

47

48

NU

RXIP

RXIN

NU

REMN

TXOP

TXON

REMP

PT PACKAGE

(TOP VIEW)

NU – Not used

description

The TNETEL1400 is an Etherloop transceiver. EtherLoop technology enables simultaneous voice and Ethernet

communication over local-loop plain old telephone service (POTS) wiring. The TNETEL1400 supports data

rates of up to 6 Mbit/s and POTS wire lengths of up to 21,000 feet. Figure 1 shows a typical system with an

EtherLoop modem located at each end of the POTS line. Each EtherLoop modem has a 10Base-T Ethernet

interface and is responsible for buffering Ethernet data before sending it over the POTS wire. The server-end

(SE) EtherLoop modem is located in a central switching office and can communicate with several client-end

(CE) EtherLoop modems, based on a round-robin arbitration scheme. The CE EtherLoop modem typically is

located at a remote site.

Copyright

© 1999, Texas Instruments Incorporated

PRODUCT PREVIEW information concerns products in the formative or

design phase of development. Characteristic data and other

specifications are design goals. Texas Instruments reserves the right to

change or discontinue these products without notice.

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

EtherLoop is a trademark of Elastic Networks.