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| APPLICATION NOTE SGS-THOMSON SLIC KITS AND COMBO II by W. Rossi 1. INTRODUCTION One of the main feature of COMBO II is the possibility to program TX and RX gains and to perform the two to four wire conversion (echo cancellation). In particular the echo cancellation feature allows you to save external components in the SLIC circuitry. In the following tables you can find different values for COMBOII hybrid balance filter in order to satisfy different administrations requirements. Three SLIC KITS are analyzed : L3000N/L3030 Table 1. Administration 1. Germany/Austria/ Switzerland R. L. Test Netw. R1 = 220 R2 = 820 C1 = 115nF L3000N/L3092 L303X(L3035/6/7) for each administration also the external components are specified. If you need more specific informations the complete Application Note is available, ask for it to our sales office. In the complete Application Note you can find all the details for each country in particular : - Echo measurements - Combo II simulation software results - Bench measurements with PCM-4 Wandel & Goltermann COMBO II Hybal Coeff. EC; 32; C4 SLIC Ext. Comp. ZAC = (1) RPC = 60 ZA = 2K ZB = 6.19K CCOMP = 10nF (1): 160W + (820//115nF) THL. Test Netw. R1 = 220 R2 = 820 C1 = 115nF Figure 1: L3000N+L3030 Application Diagram. L3000N (*) All measurements were made substituting the TTX filter with 1K resistor and RGTTX with 10K. The 1K resistor is equivalent to TTX filter for speech band signals. AN502/0694 1/7 APPLICATION NOTE 2. L3000N/L3030 + COMBO II APPLICATION Test network : 3. L3000N/L3092 + COMBO II APPLICATION Test network : In Table 1 you can find the SLIC external components and the COMBO II programming coefficient for Germany, Austria and Switzerland followed by the application diagram (Fig. 1). TX and RX gain are chosen in order to have : 0dBm0 0dBm 600 ohm (TXgain reg. = BF ; RXgain reg. = AE) Table 2. Administration 1 600 KOREA/US PRIV. PORTUGAL PRIV. FRANCE PUB. CHINA R. L. Test Netw. R1 = 600 R2 = 0 C1 = 0 R1 = 200 R2 = 680 C1 = 0.1F R1 = 180 R2 = 630 C1 = 60nF R1 = 600 R2 = 0 C1 = 0 R1 = 220 R2 = 820 C1 = 115nF R1 = 270 R2 = 910 C1 = 120nF In Table 2 you can find the SLIC external components and the COMBO II programming coefficient for different countries followed by the application diagram (Fig. 2). TX and RX gain are chosen in order to have : 0dBm0 0dBm 600 ohm (TXgain reg. = 83; RXgain reg. = AE) SLIC Ext. Comp. R1 = 0 R2 = 12.5K C1 = 0 R1 = 2.5K R2 = 17K C1 = 4nF R1 = 2K R2 = 15.75K C1 = 2.4nF R1 = 0 R2 = 12.5K C1 = 0 R1 = 3K R2 = 20.5K C1 = 4.6nF R1 = 4.25K R2 = 22.75K C1 = 4.8nF THL. Test Netw. R1 = 600 R2 = 0 C1 = 0 R1 = 200 R2 = 680 C1 = 0.1F R1 = 0 R2 = 750 C1 = 18nF R1 = 0 R2 = 1.1K C1 = 33nF R1 = 220 R2 = 820 C1 = 115nF A: R1 = 270 R2 = 1.2K C1 = 120nF B: R1 = 390 R2 = 620 C1 = 100nF COMBO II Hybal Coeff. EE 01 44 EE 11 A6 EF 00 A1 E5 11 C0 EE 00 44 EB 11 FF F1 11 EF EF 11 6E F8 01 0E F4 12 6B 2 3 ITALY PRIV. 4 ITALY PUBL. 5 GERMANY AUSTRIA SWITZERLAND FINLAND 6 7 BELGIUM PRIV. R1 = 150 R2 = 830 C1 = 72nF R1 = 1.25K R2 = 20.75K C1 = 2.88nF A: R1 = 150 R2 = 830 C1 = 72nF B: R1 = 600 R2 = 0 C1 = 0 8 UK PRIV. R1 = 300 R2 = 1K C1 = 220nF R1 = 5K R2 = 25K C1 = 8.8nF R1 = 370 R2 = 620 C1 = 310nF 2/7 APPLICATION NOTE Administration 9 UK PUBL. R. L. Test Netw. R1 = 370 R2 = 620 C1 = 310nF R1 = 900 R2 = INF. C1 = 2.16F SLIC Ext. Comp. R1 = 6.75K R2 = 15.5K C1 = 12.4nF R1 = 20K R2 = 90K C1 = 110nF *CCOMP = 150pF THL. Test Netw. Note 1 A: SHORT LINE B: LONG LINE S.G C: LONG LINE L.G Note 2 A: LOAD LINE B: NOT LOAD LINE COMBO II Hybal Coeff. ED, 23, 48 EF, 39, AC E8, 35, EA E5, 20, 48 F1, 41, 20 10 USA PUBL. Notes : 1. U.K THL TEST NETWORKS (See Figure 3) 2. U.S. THL TEST NETWORKS (See Figure 4) Figure 2: L3000N/L3092 + COMBO II L3000N 3/7 APPLICATION NOTE 4. L303X (L3035/6/7) + COMBO II APPLICATION Test network : In Table 3 you can find the SLIC external components and the COMBO II programming coefficient for different countries followed by the application diagram (Fig. 3). TX and RX gain are chosen in order to have : 0dBm0 0dBm 600 ohm (TXgain reg. = 83 ; RXgain reg. = AE) Table 3. Administration 1 600 FRANCE PUB. AUSTRIA (I) PRI. USA PRI. PORTUGAL PRI. KOREA CHINA -A- R. L. Test Netw. SLIC Ext. Comp. (ZAC) THL. Test Netw. COMBO II Hybal Coeff. R1 = 600 R2 = 0 C1 = 0 R1 = 0 R2 = 26K C1 = 0 R1 = 600 R2 = 0 C1 = 0 EE 01 44 2 R1 = 200 R2 = 680 C1 = 100nF R1 = 200 R2 = 560 C1 = 100nF R1 = 180 R2 = 630 C1 = 60nF R1 = 600 R2 = 0 C1 = 0 R1 = 220 R2 = 820 C1 = 115nF R1 = 220 R2 = 820 C1 = 115nF R1 = 150 R2 = 830 C1 = 72nF R1 = 6K R2 = 34K C1 = 2nF R1 = 6K R2 = 28K C1 = 2nF R1 = 5K R2 = 31.5K C1 = 1.2nF R1 = 0 R2 = 26K C1 = 0 R1 = 7K R2 = 41K C1 = 2.3nF R1 = 7K R2 = 41K C1 = 2.3nF R1 = 3.5K R2 = 41.5K C1 = 1.44nF R1 = 200 R2 = 680 C1 = 100nF R1 = 200 R2 = 560 C1 = 100nF R1 = 0 R2 = 750 C1 = 18nF R1 = 0 R2 = 1.1K C1 = 33nF R1 = 220 R2 = 820 C1 = 115nF R1 = 220 R2 = 1.2K C1 = 150 A: R1 = 150 R2 = 830 C1 = 72nF B: R1 = 600 R2 = 0 C1 = 0 EE 00 6E EF 12 2A F0 01 9B E5 11 C0 EF 11 C2 EB 23 FB FF 00 6E F7 01 06 E9 22 39 EA 01 24 EF 12 4C 3 CHINA -B- 4 ITALY PRI. 5 ITALY PUBL. 6 GERMANY AUSTRIA AUSTRALIA PR. SWITZERLAND AUSTRIA (II) PRIV. 7 8 BELGIUM PRI. 9 DENMARK R1 = 400 R2 = 500 C1 = 330nF R1 = 600 R2 = 0 C1 = 0 R1 = 120 R2 = 820 C1 = 112nF R1 = 16K R2 = 25K C1 = 6.6nF R1 = 26K R2 = 0 C1 = 0 R1 = 2K R2 = 41K C1 = 2.24nF R1 = 300 R2 = 1K C1 = 220nF R1 = 340 R2 = 422 C1 = 100nF R1 = 120 R2 = 820 C1 = 110nF 10 NETHERLANDS 11 NORWAY 4/7 APPLICATION NOTE Administration 12 SWEDEN R. L. Test Netw. R1 = 200 R2 = 1K C1 = 100nF R1 = 270 R2 = 910 C1 = 120nF SLIC Ext. Comp. R1 = 6K R2 =50K C1 = 2nF R1 = 9.5K R2 = 45.5K C1 = 2.4nF THL. Test Netw. R1 = 0 R2 = 900 C1 = 30nF A: R1 = 270 R2 = 1.2K C1 = 120nF B: R1 = 390 R2 = 620 C1 = 100nF 14 FRANCE PRI. R1 = 215 R2 = 1K C1 = 137nF R1 = 400 R2 = 500 C1 = 50nF R1 = 220 R2 = 820 C1 = 120nF R1 = 300 R2 = 1K C1 = 220nF R1 = 370 R2 = 620 C1 = 310nF R1 = 6.75K R2 = 50K C1 = 2.74nF R1 = 16K R2 = 25K C1 = 1nF R1 = 7K R2 = 41K C1 = 2.4nF R1 = 11K R2 = 50K C1 = 4.4nF R1 = 14.5K R2 = 31K C1 = 6.2nF R1 = 600 R2 = 0 C1 = 0 R1 = 220 R2 = 820 C1 = 115nF R1 = 220 R2 = 820 C1 = 120nF R1 = 370 R2 = 620 C1 = 310nF Note 1 A: SHORT LINE B: LONG LINE (S. GAUGE) C: LONG LINE (L. GAUGE) Note 2 A: LOAD LINE B: NOT LOAD LINE F3 01 6F EB 11 77 F1 01 EF F8 00 0F ED 23 92 EF 12 DF F4 12 6B EE, 12, CC EE, 38, 1A E9, 36, EA COMBO II Hybal Coeff. 13 FINLAND 15 GREECE 16 SPAIN 17 UK PRI. 18 UK PUB. 19 USA PUB. R1 = 900 R2 = INF. C1 = 2.16F R1 = 39K R2 = 180K C1 = 55nF Note 3 E6, 20, 48 F2, 20, A0 Notes : 1. U.K THL TEST NETWORKS (see Figure 3) 2. U.S. THL TEST NETWORKS (see Figure 4) 3. CCOMP = 100pF; Rp = 62; Rs = 6.2K 4. CREV is used for reversal polarity transition time programming only with L3037. With L3035/6 this pin is shorted to AGND. (see Figure 5) 5/7 APPLICATION NOTE Figure 3: Figure 4: 1 1. Loaded line 2 2. Not Loaded line 3 1. Short lines 2. Long lines (small gauge) 3. Long lines (large gauge) Figure 5: Typical Application Circuit (Full Feature) TS5070 + L303X + LCP1511. 6/7 APPLICATION NOTE Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. SGS-THOMSON Microelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of SGS-THOMSON Microelectronics. (c) 1995 SGS-THOMSON Microelectronics - All Rights Reserved SGS-THOMSON Microelectronics GROUP OF COMPANIES Australia - Brazil - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands - Singapore Spain - Sweden - Switzerland - Taiwan - Thaliand - United Kingdom - U.S.A. 7/7 |
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