EEWORLDEEWORLDEEWORLD

Part Number

Search

AM7953X-1JC

Description
Subscriber Line Interface Circuit
File Size149KB,20 Pages
ManufacturerAMD
Websitehttp://www.amd.com
Download Datasheet View All

AM7953X-1JC Overview

Subscriber Line Interface Circuit

Am79534/Am79535
Subscriber Line Interface Circuit
DISTINCTIVE CHARACTERISTICS
s
Programmable constant-current feed
s
Line-feed characteristics independent of
battery variations
s
Programmable loop-detect threshold
s
On-chip switching regulator for low-power
dissipation
s
Pin for external ground-key noise-filter
capacitor available
s
Ground-key detect
s
Two-wire impedance set by single external
impedance
s
Polarity reversal feature
s
Tip Open state for ground-start lines
s
Test relay driver optional
s
On-hook transmission
BLOCK DIAGRAM
Ring Relay Driver
A(TIP)
Test Relay Driver
Ground-Key
Detector
HPA
Two-Wire
Interface
HPB
Signal Transmission
Off-Hook Detector
B(RING)
DA
DB
VREG
L
VBAT
BGND
Power-Feed
Controller
Ring-Trip Detector
RD
RDC
Input Decoder
and Control
RINGOUT
TESTOUT
C1
C2
C3
C4
E1
E0
DET
GKFIL
VTX
RSN
Switching Regulator
CHS
QBAT
CHCLK
VCC
VEE
AGND
16854C-01
Notes:
1. Am79534—E0 and E1 inputs; ring and test relay drivers sourced internally to BGND.
2. Am79535—E0 and E1 inputs; ring relay driver sourced internally to BGND; ground-key filter pin.
3. Current gain (K
1
) = 1000 for all parts.
Publication#
16854
Rev:
D
Amendment: /0
Issue Date:
October 1999
WINCE Bluetooth driver loading problem
Bluetooth driver loading problem: Why is the Bluetooth driver serial port opened as soon as WNCE is turned on? Now I want to open the serial port communication after clicking the Bluetooth interface. ...
arm86 Embedded System
Happy legendary “Little New Year”!
The legendary Little New Year, on the 23rd day of the lunar year, is usually a day for eating dumplings. It is said that there are differences between the north and the south. Happy Little New Year, e...
soso Talking
[ATmega4809 Curiosity Nano Review] Serial Communication
In ATmega4809 Curiosity Nano, UART3 is connected to the serial port of the onboard emulator, through which it can communicate with the PC.First create a new project, then open MCC, configure serial po...
dcexpert MCU
How to layer multi-layer PCB boards?
The design of multi-layer boards is similar to that of double-layer boards, and the wiring is even easier, but you probably can't buy such books (it's a bit biased and not many people read it). If you...
open82977352 PCB Design
STM32 DFU function
Forum experts, does anyone know how to implement STM32's DFU without pin bootloader? Has anyone tried it? The chip I'm using is STM32F103C8T6. The DFU function has been implemented. The bootloader and...
hjk1994 stm32/stm8
Special offer to clean up some clutter and empty some private items under the bed.
[i=s]This post was last edited by boming on 2014-7-21 22:09[/i]The following items are not free shipping, tentatively set at 12 yuan, more refund, less I pay (except remote areas), all the items have ...
boming Buy&Sell

EEWorld
subscription
account

EEWorld
service
account

Automotive
development
circle

Robot
development
community

Index Files: 2361  1591  1209  2045  2237  48  33  25  42  46 
Datasheet   0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Room 1530, 15th Floor, Building B, No. 18 Zhongguancun Street, Haidian District, Beijing Telephone: (010) 82350740 Postal Code: 100190
Copyright © 2005-2026 EEWORLD.com.cn, Inc. All rights reserved 京ICP证060456号 京ICP备10001474号-1 电信业务审批[2006]字第258号函 京公网安备 11010802033920号