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AM79Q021JC

Description
PCM CODEC, PQCC44
CategoryTopical application    Wireless rf/communication   
File Size926KB,68 Pages
ManufacturerETC
Download Datasheet Parametric Compare View All

AM79Q021JC Overview

PCM CODEC, PQCC44

AM79Q021JC Parametric

Parameter NameAttribute value
Number of functions1
Number of terminals44
Maximum operating temperature70 Cel
Minimum operating temperature0.0 Cel
Processing package descriptionPlastic, LCC-44
stateTRANSFERRED
CraftsmanshipCMOS
packaging shapeSQUARE
Package SizeChipCARRIER
surface mountYes
Terminal formJ BEND
Terminal spacing1.27 mm
Terminal locationFour
Packaging MaterialsPlastic/Epoxy
Temperature levelCOMMERCIAL
Communication typeencode decode
Am79Q02/021/031
Quad Subscriber Line Audio-Processing Circuit
(QSLAC™) Devices
DISTINCTIVE CHARACTERISTICS
Software programmable:
— SLIC input impedance
— Transhybrid balance
— Transmit and receive gains
— Equalization (frequency response)
— Digital I/O pins
— Programmable debouncing on one input
— Time slot assigner
— Programmable clock slot and PCM transmit clock
edge options
Standard microprocessor interface
A-law, µ-law, or linear coding
Single or Dual PCM ports available
— Up to 128 channels (PCLK at 8.192 MHz) per
PCM port
— Optional supervision on the PCM highway
GENERAL DESCRIPTION
The Am79Q02/021/031 Quad Subscriber Line Audio-
Processing Circuit (QSLAC) devices integrate the key
functions of analog linecards into high-performance,
very-programmable, four-channel codec-filter devices.
The QSLAC devices are based on the proven design
of Legerity’s reliable SLAC™ device families. The
advanced ar chitecture of the Q SLAC devic es
implements four independent channels and employs
digital filters to allow software control of transmission,
thus providing a cost-effective solution for the audio-
processing function of programmable linecards.
Advanced submicron CMOS technology makes the
Am79Q02/021/031 QSLAC devices economical, with
both the functionality and the low power consumption
needed in linecard designs to maximize linecard
density at minimum cost. When used with four Legerity
SLICs, a QSLAC device provides a complete software-
configurable solution to the BORSCHT functions.











Performs the functions of four codec/filters
1.536, 1.544, 2.048, 3.072, 3.088, 4.096, 6.144,
6.176, or 8.192 MHz master clock derived from
MCLK or PCLK
Built-in test modes with loopback, tone
generation, and
µ
P access to PCM data
Low-power, 5.0 V CMOS technology
5.0 V only operation
Mixed state (analog and digital) impedance
scaling
Performance characteristics guaranteed over a
12 dB gain range
Real Time Data register with interrupt (open
drain or TTL output)
Supports multiplexed SLIC inputs
Broadcast state
256 kHz or 293 kHz chopper clock for Legerity
SLICs with switching regulator
Maximum channel bandwidth for V.34 modems





Publication#
080147
Rev:
H
Amendment:
/0
Issue Date:
September 2001

AM79Q021JC Related Products

AM79Q021JC AM79Q02 AM79Q021 AM79Q02JC AM79Q021VC AM79Q031JC AM79Q031
Description PCM CODEC, PQCC44 PCM CODEC, PQCC44 PCM CODEC, PQCC44 PCM CODEC, PQCC44 PCM CODEC, PQCC44 PCM CODEC, PQCC44 PCM CODEC, PQCC44
Number of functions 1 1 1 1 1 1 1
Number of terminals 44 44 44 44 44 44 44
Maximum operating temperature 70 Cel 70 Cel 70 Cel 70 Cel 70 Cel 70 Cel 70 Cel
Minimum operating temperature 0.0 Cel 0.0 Cel 0.0 Cel 0.0 Cel 0.0 Cel 0.0 Cel 0.0 Cel
Processing package description Plastic, LCC-44 Plastic, LCC-44 Plastic, LCC-44 Plastic, LCC-44 Plastic, LCC-44 Plastic, LCC-44 Plastic, LCC-44
state TRANSFERRED TRANSFERRED TRANSFERRED TRANSFERRED TRANSFERRED TRANSFERRED TRANSFERRED
Craftsmanship CMOS CMOS CMOS CMOS CMOS CMOS CMOS
packaging shape SQUARE SQUARE SQUARE SQUARE SQUARE SQUARE SQUARE
Package Size ChipCARRIER ChipCARRIER ChipCARRIER ChipCARRIER ChipCARRIER ChipCARRIER ChipCARRIER
surface mount Yes Yes Yes Yes Yes Yes Yes
Terminal form J BEND J BEND J BEND J BEND J BEND J BEND J BEND
Terminal spacing 1.27 mm 1.27 mm 1.27 mm 1.27 mm 1.27 mm 1.27 mm 1.27 mm
Terminal location Four Four Four Four Four Four Four
Packaging Materials Plastic/Epoxy Plastic/Epoxy Plastic/Epoxy Plastic/Epoxy Plastic/Epoxy Plastic/Epoxy Plastic/Epoxy
Temperature level COMMERCIAL COMMERCIAL COMMERCIAL COMMERCIAL COMMERCIAL COMMERCIAL COMMERCIAL
Communication type encode decode encode decode encode decode encode decode encode decode encode decode encode decode

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