AM79R79-3JC AMD (ADVANCED MICRO DEVICES), AM79R79-3JC Datasheet
AM79R79-3JC
Specifications of AM79R79-3JC
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AM79R79-3JC Summary of contents
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... PRELIMINARY Am79R79 Ringing Subscriber Line Interface Circuit DISTINCTIVE CHARACTERISTICS Ideal for short-loop applications Ideal for ISDN terminal adaptor and fixed radio access applications On-chip ringing with on-chip ring-trip detector Low standby state power Battery operation: — –40 –75 V BAT1 — – ...
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... SLIC automatically switches to a higher voltage in the on-hook (standby) state. Like all of the AMD SLIC devices, the Am79R79 Ringing SLIC device supports on-hook transmission, ring-trip detection, programmable loop-detect threshold, and is available with on-chip polarity reversal. The Am79R79 ...
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... Longitudinal Balance, Polarity Reversal – Longitudinal Balance, Polarity Reversal – Longitudinal Balance, No Polarity Reversal – Longitudinal Balance, No Polarity Reversal DEVICE NUMBER/DESCRIPTION Am79R79 Ringing Subscriber Line Interface Circuit Valid Combinations Valid Combinations list configurations planned to be supported in volume for this device. Consult ...
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... DIP 1 RINGIN RDCR 28 2 HPA VTX 27 3 HPB 26 VNEG RTRIP2 4 RSN 25 RTRIP1 5 AGND/DGND RDC 6 A(TIP) RSGL 7 22 B(RING) RSGH 8 21 BGND VCC 10 18 DET VBAT2 B2EN VBAT1 Am79R79 Data Sheet RTRIP1 29 RTRIP2 28 HPB 27 HPA 26 RINGIN 25 RDCR 24 VTX 23 VNEG 22 RSN 21 ...
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... Transmit Audio. This output is 0.5066 times the A(TIP) and B(RING) metallic voltage. VTX also sources the two-wire input impedance programming network Description . TTL compatible. BAT1 . BAT1 V . BAT1 and BAT2 SLIC Products . Logic High enables operation BAT2 is negative for normal polarity RDC ). For power conservation in any BAT1 5 ...
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... The Operating Ranges define those limits between which the – BAT1 functionality of the device is guaranteed. – + Functionality of the device from 0°C to +70°C is guaranteed by production testing. Performance from –40°C to +85°C is guaranteed by characterization and periodic sampling of production units. BAT1 + 0 Am79R79 Data Sheet BAT2 BAT1 min ...
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... SLIC Products Min Typ Max Unit Note ...
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... BAT2 L Open Circuit state Standby state OHT state Active state–normal Open Circuit state Standby state OHT state Active state–normal Open Circuit state Standby state OHT state Active state–normal Am79R79 Data Sheet Min Typ Max Unit Note I 1.085I 21.7 20 ...
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... RRT1 Bat1 = –75 V, ringload = 1570 V = 2.5 V RINGIN B to ground B to ground Active, V BAT1 Active, V BAT2 Standby 100 µ RYOUT2 BGND SLIC Products Min Typ Max Unit Note 2.0 V 0.8 –75 40 µA –400 0.40 V 2.4 –10 + Vpk 7 – 150 180 210 ...
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... LTH Table 1. SLIC Decoding (DET) Output 2-Wire Status Ring trip Ring trip Loop detector Loop detector Loop detector Loop detector Loop detector Loop detector on-hook battery must be used. BAT1 Am79R79 Data Sheet = + – 600 , CC NEG L = 1.2 µ 1N400x 1.5 µ 100 0.33 µ ...
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... LTH LTH BAT1 tees no unstable states under all operating conditions. This equation shows at what resistance the standby threshold is actually a cur- rent threshold rather than a resistance threshold, which is shown by the Vbat dependency. SLIC Products . Z is defined above, and G is the T 42L is the ...
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... V ASH V APPH = ------------------------------------------------------------------------------ - DC1 DC2 -------------------------------------- + LOOP 600 Am79R79 Data Sheet 4) V ASH 1) Constant-Current Region 2) V ASL resistor to GND, B2EN = logic Low. SGL = resistor B2EN = logic Low. CC must be greater than 100 resistor to GND, B2EN = logic High. SGH = resistor B2EN = logic High. SGH ...
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... SLEW 0 Battery BAT1 R + LRT R + 150 + 2R LRT tr. SLEW This is the best time for switching between Ringing and other states for minimizing detect switching transients. Figure 2. Ringing Waveforms SLIC Products 150 + 2R F Ringing Reference (Input SLEW B(RING) A(TIP) 13 ...
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... Feed current programmed RSN SLIC B RDC and R DC1 DC2 Figure 3. Feed Programming Am79R79 Data Sheet R DC2 DC1 ...
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... L-4 Long. Bal. = –20 log ( A(TIP) VTX L 2 SLIC AGND B(RING) RSN log ( L2 Two- to Four-Wire Insertion Loss A(TIP) VTX SLIC R L AGND B(RING) RSN / V ) BRS = 20 log (V RX A(TIP) VTX R L SLIC AGND B(RING) RSN S2 Closed, S1 Open / V ) 4-L Long. Sig. Gen log ( Longitudinal Balance SLIC Products ...
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... MHz A(TIP) SLIC V M AGND Z IN B(RING) Return loss = –20 log ( Two-Wire Return Loss Test Circuit 6.2 k DET 200 200 RFI Test Circuit Am79R79 Data Sheet VTX RSN R RX A(TIP) B(RING Ground-Key Switching VTX 33 nF SLIC under test ...
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... B(RING) R DC2 80 k RDC R DCR RYOUT1 RDCR 2.0 k RYOUT2 RYE B2EN C1 C2 VBAT1 VBAT2 E1 DET BGND RINGIN AGND/ DGND H. Am79R79 Test Circuit SLIC Products – SGH open R SGL open 300 Note: R DC1 Refer to Applications Circuit for 20 k recommended configuration. C 1.2 µ ...
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... RYE B2EN C1 C2 VBAT1 VBAT2 E1 DET BGND RINGIN AGND/ DGND 4. 5.2 k High Battery Loop Threshold 5. 925 Ringing Loop Threshold 6. 600 Two-wire Impedance, 600 Application Circuit Am79R79 Data Sheet +5 V – SGH open R SGL open V TX 125 125 k 250 DC1 DCR2 C DC ...
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... Electrical Characteristics; Last row under Ring Signal, min changed from 130 to 150, typ changed from 160 to • 180, and max changed from 190 to 210. SLIC Decoding Table; Added B2EN reference to the Battery Selection column and its corresponding note to the • notes section. ...