參數資料
型號： L7597
廠商： Lineage Power
英文描述： Resistive Subscriber Line Interface Circuit (SLIC), Ring Relay, and Protector (SRP) for Short Loop and TA-909 Applications(用于短環(huán)路和TA-909的電阻性用戶線接口、振鈴繼電器和保護器)
中文描述： 電阻用戶線接口電路（SLIC），環(huán)繼電器和保護（SRP）的短環(huán)路和TA - 909應用（用于短環(huán)路和電訊- 909的電阻性用戶線接口，振鈴繼電器和保護器）
文件頁數： 3/34頁
文件大?。?/td> 564K
代理商： L7597
Lucent Technologies Inc.
3
Advance Data Sheet
March 1997
Relay, and Protector (SRP) for Short Loop and TA-909 Applications
L7597 Resistive Subscriber Line Interface Circuit (SLIC), Ring
Table of Contents
(continued)
Tables
Page
Table 1. Pin Descriptions...........................................................................................................................................5
Table 2. Operating Conditions and Powering ............................................................................................................8
Table 3. Ring Trip Detector ........................................................................................................................................9
Table 4. Battery Feed ................................................................................................................................................9
Table 5. Electrical Characteristics of Pins PT, PR, and V
BF
Table 6. Loss of Power Supplies..............................................................................................................................11
Table 7. Analog Signal Pins.....................................................................................................................................11
Table 8. ac Transmission Characteristics.................................................................................................................13
Table 9. Logic Inputs (CE, CS, and B0—B3) and Output NSTAT............................................................................14
Table 10. Timing Requirements (B0—B3 and CS)..................................................................................................14
Table 11. Relay Driver (RDO)..................................................................................................................................14
Table 12. Battery Switch (SW1) and Ring Break Switch (SW2)..............................................................................15
Table 13. Ringing Access Switch (SW3) .................................................................................................................15
Table 14. Input State Coding...................................................................................................................................16
Table 15. External Components Required...............................................................................................................20
Table 16.
MMC
* A31A8574AA and
MMC
A11A8574AA Module ............................................................................22
.....................................................................................10
Figures
Page
Figure 1. Architectural Diagram.................................................................................................................................4
Figure 2. Pin Layout ..................................................................................................................................................5
Figure 3. Switch On-State V-I Characteristics SW1 and SW2.................................................................................16
Figure 4. Switch On-State V-I Characteristics SW3.................................................................................................16
Figure 5. External Components Required...............................................................................................................19
Figure 6. Resistor Network......................................................................................................................................22
Figure 7. L7597 SLIC Matching Requirements .......................................................................................................23
Figure 8. Implementing the Noise Cancellation Function........................................................................................24
Figure 9. Ring Trip Threshold ..................................................................................................................................25
Figure 10. Equivalent Complex Terminations..........................................................................................................28
Figure 11. Initial ac Interface for Complex Termination Between L7597 SLIC and T7504 Codec ..........................29
Figure 12. Revised ac Interface C
T
and C
R
Combined into a Single Capacitor C
Figure 13. Addition of Resistor R
SC
from XMT to IRP.............................................................................................30
Figure 14. TA-909 Application Diagram...................................................................................................................32
S
.................................................30
*
MMC
is a registered trademark of Microelectronic Modules Corporation.
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