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L9216G

Short-Loop Ringing SLIC with Ground Start

Agere -> LSI Corporation 

Preliminary Data Sheet

September 2001

L9216A/G

Short-Loop Ringing SLIC w/ Ground Start

Table of Contents (continued)

Figures

Page

Figure 1. Architecture Diagram ...................................7

Figure 2. 28-Pin PLCC ...............................................8

Figure 3. 48-Pin MLCC................................................8

Figure 4. Basic Test Circuit ......................................20

Figure 5. Metallic PSRR ...........................................21

Figure 6. Longitudinal PSRR ....................................21

Figure 7. Longitudinal Balance .................................21

Figure 8. ac Gains ....................................................21

Figure 9. Ringing Waveform Crest Factor = 1.6 .......25

Figure 10. Ringing Waveform Crest Factor = 1.2 .....25

Figure 11. Ring Mode Typical Operation ..................26

Figure 12. RINGIN Operation ....................................27

Figure 13. L9215/16 Ringing Input Circuit Selection

Table for Square Wave and PWM

Inputs .......................................................28

Figure 14. Modulation Waveforms ............................29

Figure 15. 5 V PWM Signal Amplitude .....................29

Figure 16. Ringing Output on RING, with

VCC = 5 V .................................................29

Figure 17. 3.3 V PWM Signal Amplitude ..................30

Figure 18. Ringing Output on RING, with

VCC = 3.1 V ..............................................30

Figure 19. Square Wave Input Signal and

Trapezoidal Power Ring Signal Output ...30

Figure 20. Crest Factor vs. Battery Voltage .............31

Figure 21. Crest Factor vs. R (kΩ) ...........................31

Figure 22. ac Equivalent Circuit ................................35

Figure 23. Agere T7504 First-Generation Codec

Resistive Termination ..............................35

Figure 24. Interface Circuit Using First-Generation

Codec (Blocking Capacitors Not

Shown) ....................................................38

Figure 25. ac Interface Using First-Generation Codec

(Including Blocking Capacitors) for

Complex Termination Impedance ...........40

Figure 26. Agere T7504 First-Generation Codec

Complex Termination ..............................40

Figure 27. Third-Generation Codec ac Interface

Network; Complex Termination ...............42

Tables

Page

Table 1. Pin Descriptions .......................................... 9

Table 2. Control States ............................................. 10

Table 3. Supervision Coding ................................... 10

Table 4. Recommended Operating

Characteristics .......................................... 12

Table 5. Thermal Characteristics.............................. 12

Table 6. Environmental Characteristics .................... 13

Table 7. 5 V Supply Currents ................................... 13

Table 8. 5 V Powering .............................................. 13

Table 9. 3.3 V Supply Currents ............................... 14

Table 10. 3.3 V Powering ......................................... 14

Table 11. 2-Wire Port .............................................. 15

Table 12. Analog Pin Characteristics ..................... 16

Table 13. ac Feed Characteristics .......................... 17

Table 14. Logic Inputs and Outputs (VCC = 5 V) ..... 18

Table 15. Logic Inputs and Outputs (VCC = 3.3 V) .. 18

Table 16. Ground Start ............................................ 18

Table 17. Ringing Specifications ............................. 19

Table 18. Ring Trip .................................................. 19

Table 19. Typical Active Mode On- to Off-Hook

Tip/Ring Current-Limit Transient

Response ................................................ 23

Table 20. FB1 and FB2 Values vs. Typical Ramp

Time ......................................................... 24

Table 21. Onset of Power Ringing Clipping

VCC = 5 V, Cinput = 0.47 µF ................... 27

Table 22. Onset of Power Ringing Clipping

VCC = 3.1 V, Cinput = 0.47 µF ................ 27

Table 23. Signal and Component Selection Chart ... 28

Table 24. Parts List L9216; Agere T7504 First-

Generation Codec Resistive Termination;

Nonmeter Pulse Application ................... 36

Table 25. Parts List L9216; Agere T7504 First-

Generation Codec Complex Termination;

Meter Pulse Application ........................... 41

Table 26. Parts List L9216; Agere T8536

Third-Generation Codec ac and

dc Parameters; Fully Programmable ...... 43

Agere Systems Inc.

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