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參數資料
| 型號： | L9312 |
| 英文描述： | Line Interface and Line Access Circuit Forward Battery SLIC and Ringing Relay for TR-57 Applications |
| 中文描述： | 線路接口和線路接入電路轉發電池SLIC和振鈴繼電器的訓練班- 57應用 |
| 文件頁數： | 3/40頁 |
| 文件大小： | 709K |
| 代理商： | L9312 |
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Data Sheet
July 2001
Forward Battery SLIC and Ringing Relay for TR-57 Applications
L9312 Line Interface and Line Access Circuit
Agere Systems Inc.
3
Table of Contents
(continued)
Figures
Page
Figure 1. Architecture Diagram................................... 7
Figure 2. 44-Pin PLCC ............................................... 8
Figure 3. Timing Requirements ................................ 18
Figure 4. On-State Switch I-V Characteristics.......... 20
Figure 5. Basic Test Circuit ...................................... 21
Figure 6. Metallic PSRR ........................................... 22
Figure 7. Longitudinal PSRR.................................... 22
Figure 8. Longitudinal Balance................................. 22
Figure 9. Longitudinal Impedance ............................ 22
Figure 10. ac Gains .................................................. 22
Figure 11. L9312 Loop/Battery Current (with Battery
Switch) vs. Loop Resistance ................... 24
Figure 12. Tip/Ring Voltage ..................................... 26
Figure 13. L9312 Loop Current vs. Loop Voltage..... 27
Figure 14. ac Equivalent Circuit................................ 34
Figure 15. Agere T7504 First-Generation
Codec Resistive Termination, Single
Battery Operation .................................... 36
Figure 16. L9312 for Agere T8536 Third-Generation
Codec, Dual Battery Operation, ac and dc
Parameters, Fully Programmable............ 38
Tables
Page
Table 1. Pin Descriptions ........................................... 8
Table 2. Control States ............................................. 10
Table 3. Supervision Coding..................................... 10
Table 4. Device Operating Conditions and
Powering..................................................... 13
Table 5. Ring Trip Detector....................................... 14
Table 6. SLIC Two-Wire Port .................................... 15
Table 7. Analog Pin Characteristics.......................... 16
Table 8. ac Feed Characteristics .............................. 17
Table 9. Logic Inputs and Outputs............................ 18
Table 10. Timing Requirements................................ 18
Table 11. Break Switches (SW1, 2) .......................... 19
Table 12. Ring Return Switch (SW3)........................ 19
Table 13. Ringing Access Switch (SW4) .................. 20
Table 14. Typical Active Mode On- to Off-Hook
Tip/Ring Current-Limit Transient
Response.................................................. 26
Table 15. Break-Before-Make Logic Control
Sequence Device Switching...................... 29
Table 16. L9312 Parts List for Agere T7504
First-Generation Codec Resistive Termina-
tion, Single Battery Operation ................... 37
Table 17. L9312 Parts List for Agere T8536
Third-Generation Codec, Dual Battery
Operation, ac and dc Parameters, Fully
Programmable........................................... 39
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