product brief june 2000 l9219a/g low-cost line interface with reverse battery and dual current limit features n basic forward/reverse battery slic functionality at a low cost n pin compatible with lucent l9217 and l9218 slics n low active power (typical 135 mw during on-hook transmission) n low-power scan mode for low-power on-hook power dissipation (55 mw typical) n distortion-free on-hook transmission n convenient operating states: forward active-low current limit forward active-high current limit reverse active-low current limit reverse active-high current limit low-power scan disconnect (high impedance) n minimal external components required n two gain options to optimize codec interface n adjustable supervision functions: off-hook detector with hysteresis ring trip detector n logic controlled high and low current limit n ramped rate of battery reversal n thermal protection with thermal shutdown indica- tion description this general-purpose electronic subscriber loop interface circuit (slic) is optimized for low cost, while still providing a satisfactory set of features. this part is a pin-for-pin replacement for the lucent technolo- gies l9217 and l9218 slics. the l9219 requires a 5 v power supply and single battery to operate. this device offers forward and reverse battery operation. the rate of battery rever- sal may be ramped to meet international require- ments. additionally, a low-power scan mode, wherein all circuitry except the off-hook supervision is shut down to conserve power, is available. the dc current limit may be programmed via a single external resistor. via the logic table, the current limit may be increased a nominal 42% above the value set by the i prog resistor, giving the user a high-low current limit option. device overhead is fixed and is adequate for 3.14 dbm into 900 w of on-hook transmission. both the loop supervision and ring trip supervision functions are offered with user-controlled thresholds via external resistors. the l9219 is offered with a receive gain that is opti- mized for interface to a first-generation type codec (l9219a). it is also offered with a gain option that is optimized for interface to a third- or fourth-generation type codec (L9219G); in both cases, minimizing external components required at this interface. data control is via a parallel data control scheme. the device is available in a 28-pin plcc package. it is built by using a 90 v complementary bipolar (cbic) process.
product brief june 2000 with reverse battery and dual current limit l9219a/g low-cost line interface lucent technologies inc. reserves the right to make changes to the product(s) or information contained herein without notice. n o liability is assumed as a result of their use or application. no rights under any patent accompany the sale of any such product(s) or information. copyright ? 2000 lucent technologies inc. all rights reserved printed in u.s.a. june 2000 pb00-073alc (replaces pn00-043alc) for additional information, contact your microelectronics group account manager or the following: internet: http://www.lucent.com/micro e-mail: docmaster@micro.lucent.com n. america: microelectronics group, lucent technologies inc., 555 union boulevard, room 30l-15p-ba, allentown, pa 18109-3286 1-800-372-2447 , fax 610-712-4106 (in canada: 1-800-553-2448 , fax 610-712-4106) asia pacific: microelectronics group, lucent technologies singapore pte. ltd., 77 science park drive, #03-18 cintech iii, singap ore 118256 tel. (65) 778 8833 , fax (65) 777 7495 china: microelectronics group, lucent technologies (china) co., ltd., a-f2, 23/f, zao fong universe building, 1800 zhong shan xi road, shanghai 200233 p. r. china tel. (86) 21 6440 0468 , ext. 325 , fax (86) 21 6440 0652 japan: microelectronics group, lucent technologies japan ltd., 7-18, higashi-gotanda 2-chome, shinagawa-ku, tokyo 141, japan tel. (81) 3 5421 1600 , fax (81) 3 5421 1700 europe: data requests: microelectronics group dataline: tel. (44) 7000 582 368 , fax (44) 1189 328 148 technical inquiries: germany: (49) 89 95086 0 (munich), united kingdom: (44) 1344 865 900 (ascot), france: (33) 1 40 83 68 00 (paris), sweden: (46) 8 594 607 00 (stockholm), finland: (358) 9 4354 2800 (helsinki), italy: (39) 02 6608131 (milan), spain: (34) 1 807 1441 (madrid) application 12-3561d (f) r prog 30.9 k w r lcth 24.3 k w r pt 50 w l7591 r pr pt 18 1 7 lcth 8 dcout 50 w pr 10 rtsp 20 r ts1 510 w rtsn 19 r tsn 3.4 m w v ring v bat cf2 11 cf1 12 c f1 0.47 m f agnd 16 bgnd 17 l9219 slic c rts1 0.015 m f r tsp 2.94 m w c f2 0.1 m f rcvn nstat 6 dr2 fs bclk 1/4 t8536 pcm highway control and clock b0 b1 15 14 rcvp 5 vf r on vf x i vf r op slic0a slic3a slic2a dgnd dx1 dx2 dr1 c vdd 0.1 m f v dd codec b2 13 slic4a 22 vitr 23 tip ring emr v bat 9 c bat 0.1 m f v bat txi 24 vtx 25 tg 26 c b 0.1 m f r gp1 8.06 k w c b1 0.1 m f txi i prog v cc 4 c cc 0.1 m f v cc
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