AM79Q02
器件资料摘要：
Publication# 080147 Rev: H Amendment: /0
Issue Date: September 2001
Am79Q02/021/031
Quad Subscriber Line Audio-Processing Circuit
(QSLAC™) Devices
DISTINCTIVE CHARACTERISTICS
G01 Performs the functions of four codec/filters
G01 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
G01 Standard microprocessor interface
G01 A-law, µ-law, or linear coding
G01 Single or Dual PCM ports available
— Up to 128 channels (PCLK at 8.192 MHz) per
PCM port
— Optional supervision on the PCM highway
G01 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
G01 Built-in test modes with loopback, tone
generation, and µP access to PCM data
G01 Low-power, 5.0 V CMOS technology
G01 5.0 V only operation
G01 Mixed state (analog and digital) impedance
scaling
G01 Performance characteristics guaranteed over a
12 dB gain range
G01 Real Time Data register with interrupt (open
drain or TTL output)
G01 Supports multiplexed SLIC inputs
G01 Broadcast state
G01 256 kHz or 293 kHz chopper clock for Legerity
SLICs with switching regulator
G01 Maximum channel bandwidth for V.34 modems
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 architecture of the QSLAC devices
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.
Issue Date: September 2001
Am79Q02/021/031
Quad Subscriber Line Audio-Processing Circuit
(QSLAC™) Devices
DISTINCTIVE CHARACTERISTICS
G01 Performs the functions of four codec/filters
G01 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
G01 Standard microprocessor interface
G01 A-law, µ-law, or linear coding
G01 Single or Dual PCM ports available
— Up to 128 channels (PCLK at 8.192 MHz) per
PCM port
— Optional supervision on the PCM highway
G01 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
G01 Built-in test modes with loopback, tone
generation, and µP access to PCM data
G01 Low-power, 5.0 V CMOS technology
G01 5.0 V only operation
G01 Mixed state (analog and digital) impedance
scaling
G01 Performance characteristics guaranteed over a
12 dB gain range
G01 Real Time Data register with interrupt (open
drain or TTL output)
G01 Supports multiplexed SLIC inputs
G01 Broadcast state
G01 256 kHz or 293 kHz chopper clock for Legerity
SLICs with switching regulator
G01 Maximum channel bandwidth for V.34 modems
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 architecture of the QSLAC devices
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.