AM79M576A Circuit Datasheet

AM79M576A Datasheet PDF, Equivalent


Part Number

AM79M576A

Description

Metering Subscriber Line Interface Circuit

Manufacture

AMD

Total Page 18 Pages
Datasheet
Download AM79M576A Datasheet


AM79M576A
Am79M576A
Metering Subscriber Line Interface Circuit
DISTINCTIVE CHARACTERISTICS
s Programmable constant-resistance feed
s Programmable loop-detect threshold
s Ground-key detect
s Performs polarity reversal
s Ring relay driver
s Supports 2.2 Vrms metering (12 and 16 kHz)
s Line feed characteristics independent of battery
variations
s On-chip switching regulator for low-power
dissipation
s Two-wire impedance set by single external
impedance
s Tip Open state for ground-start lines
s On-hook transmission
BLOCK DIAGRAM
A(TIP)
HPA
HPB
Two-Wire
Interface
B(RING)
www.datasBhVVGBReNDDAEDTABGLet4u.com
Ground-Key
Detector
Ring Relay
Driver
Input Decoder
and Control
Signal
Transmission
Off-Hook Detector
Power-Feed
Controller
Ring-Trip
Detector
Switching
Regulator
VCCRING
RINGOUT/DGND
C1
C2
C3
E0
E1
DET
VTX
RSN
RD
RDC
CHS QBAT CHCLK VCC VEE AGND/DGND
Publication# 18412 Rev: D Amendment: /0
Issue Date: October 1999

AM79M576A
ORDERING INFORMATION
Standard Products
AMD standard products are available in several packages and operating ranges. The order number (Valid Combination) is
formed by a combination of the elements below.
Am79M576A
JC
TEMPERATURE RANGE
C = Commercial (0°C to 70°C)*
PACKAGE TYPE
J = 32-pin Plastic Leaded Chip Carrier (PL 032)
PERFORMANCE GRADE
Blank = Standard Specification
1 = Performance Grading
2 = Performance Grading
DEVICE NUMBER/DESCRIPTION
Am79M576A
Metering Subscriber Line Interface Circuit
Valid Combinations
Am79M576A
1
2
JC
Valid Combinations
Valid Combinations list configurations planned to
be supported in volume for this device. Consult
the local AMD sales office to confirm availability
of specific valid combinations, to check on newly
released combinations, and to obtain additional
data on AMD’s standard military grade products.
Note:
* Functionality of the device from 0°C to +70°C is guaranteed by production testing. Performance from –40°C to +85°C is
guaranteed by characterization and periodic sampling of production units.
2 Am79M576A Data Sheet


Features Am79M576A Metering Subscriber Line Inter face Circuit DISTINCTIVE CHARACTERISTIC S s Programmable constant-resistance fe ed s Programmable loop-detect threshold s Ground-key detect s Performs polarit y reversal s Ring relay driver s Suppor ts 2.2 Vrms metering (12 and 16 kHz) s Line feed characteristics independent o f battery variations s On-chip switchin g regulator for low-power dissipation s Two-wire impedance set by single exter nal impedance s Tip Open state for grou nd-start lines s On-hook transmission BLOCK DIAGRAM A(TIP) Ring Relay Driver Ground-Key Detector Input Decoder and C ontrol VCCRING RINGOUT/DGND C1 C2 C3 E0 HPA HPB Two-Wire Interface DET Sig nal Transmission VTX RSN B(RING) Off- Hook Detector RD Power-Feed Controller RDC m o c . u 4 t e e h s a t a .d w w w DA DB VREG L VBAT BGND Ring-Trip De tector Switching Regulator CHS QBAT C HCLK VCC VEE AGND/DGND Publication# 18412 Rev: D Amendment: /0 Issue Date: October 1999 www.DataSheet4U.com E1 ORDERING INFORMATION St.
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