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參數資料
| 型號： | L8575 |
| 英文描述： | Dual-Resistive,Low-Cost Subscriber Line Interface Circuit(SLIC) |
| 中文描述： | 雙電阻，低成本用戶線接口電路（SLIC） |
| 文件頁數： | 3/36頁 |
| 文件大小： | 633K |
| 代理商： | L8575 |
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Lucent Technologies Inc.
3
Advance Data Sheet
March 1997
L8575
Dual-Resistive, Low-Cost SLIC
Table of Contents
(continued)
Tables
Page
Table 1. Pin Descriptions .......................................................................................................................................... 5
Table 2. Operating Conditions and Powering ............................................................................................................9
Table 3. Battery Feed, Switchhook Detectors (LCA and LCB), and Fault Detectors (FLTA and FLTB)................... 10
Table 4. Ring-Trip Detectors (RTA, RTB, RZA, and RZB)....................................................................................... 10
Table 5. Relay Drivers (RDRA, RDTA, RDRB, RDTB, RDDA, and RDDB)............................................................. 11
Table 6. Analog Signal Pins.................................................................................................................................... 11
Table 7. Transmission Characteristics..................................................................................................................... 13
Table 8. Logic Inputs (CLK, EN, and DI) and Outputs (DO).................................................................................... 14
Table 9. Timing Requirements for CLK, EN, DI, and DO........................................................................................ 14
Table 10.
MMC
* A31A8575AA Thick Film Resistor Module.................................................................................... 17
Table 11. Total Module Power Dissipation .............................................................................................................. 19
Table 12. Truth Table for EN and CLK..................................................................................................................... 22
Table 13. Output DATA Bit Definition .......................................................................................................................22
Table 14. Input DATA Bit Definition.......................................................................................................................... 23
Table 15. Truth Table for D1 and D0........................................................................................................................ 24
Table 16. External Components Required...............................................................................................................33
Figures
Page
Figure 1. Functional Diagram ....................................................................................................................................4
Figure 2. 44-Pin PLCC Pinout .................................................................................................................................. 5
Figure 3. Power Supply Rejection vs. Frequency Diagram..................................................................................... 15
Figure 4. L8575 SLIC Resistor Module................................................................................................................... 17
Figure 5. L8575 SLIC Dual-Resistive Matching Requirements .............................................................................. 18
Figure 6. Self-Test Mode Circuit ............................................................................................................................. 21
Figure 7. Timing Requirements for CLK, EN, DI, and DO ...................................................................................... 22
Figure 8. Logic Diagram (Positive Logic; Flip-Flops Clocked on High-to-Low Transition)....................................... 23
Figure 9. Ring-Trip Threshold ................................................................................................................................. 25
Figure 10. Ring-Trip Circuits ...................................................................................................................................25
Figure 11. L8575 SLIC I/V Template .......................................................................................................................27
Figure 12. Equivalent Complex Terminations ..........................................................................................................29
Figure 13. Initial ac Interface for Complex Termination Between L8575 SLIC and T7504 Codec ..........................30
Figure 14. Revised ac Interface C
T
and C
R
Combined into a Single Capacitor C
Figure 15. Addition of Resistor R
SC
from XMT to IRP .............................................................................................32
Figure 16. Typical Application Diagram with Blocking Capacitors (C
S
..................................................31
B
) Included ....................................................34
*
MMC
is a registered trademark of Microelectronic Modules Corporation.
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相關代理商/技術參數 |
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