le79112 Zarlink Semiconductor, le79112 Datasheet
le79112
Manufacturer Part Number
le79112
Description
Voice Control Processor
Manufacturer
Zarlink Semiconductor
Datasheet
1.LE79112.pdf
(2 pages)
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The Le79112 Voice Control Processor (VCP) is a digital signal processing platform
The Le79112 VCP in combination with a VE790 Series chip set, supports up to 32
The solution enables the design of a low-cost, highperformance, fully software
Additionally, the Le79112 VCP has integrated self-test and line-test capabilities to
There are four firmware options offered for the Le79112 VCP device:
that works with the Zarlink VE790 Series of chip sets using the MPI interface, PCM
port, and an interrupt line from the codec/filter. The primary functions of the
Le79112 VCP are to program and control the codec/filter via an Application Pro-
gramming Interface (API). Firmware residing in the DSP’s RAM provides enhanced
call processing and test capabilities.
channels of universal telephone line interface with high-level voice functionality.
programmable line interface for multiple country applications. All of the AC, DC,
signaling parameters, and data are fully programmable via the Host Bus Interface
(HBI) through the combination of the HBI and a slave PCM port.
resolve faults to the line or line circuit. The integrated test capability is crucial for
remote applications where dedicated test hardware is not cost effective.
LineCare™ Call Control – Le79112SLNT
LineCare™ Basic Test – Le79112SLBT
LineCare™ Advanced Test – Le79112SLAT
LineCare™ Advanced Test Plus – Le79112SLATP
Test Function Measurements
• Voltage
• Current
• Resistance
• Capacitance
• Tone
• Noise
Microcontroller
Le79112
VCP
Backplane I/F
SLAC™ devices are also available in 2-, 4-, and 8-channel versions.
PRODUCT
VOICE CONTROL PROCESSOR
Voice Signal
Voice Signal
Functions*
Functions*
Processor
Processor
Test
Test
SLAC™ Device
SLAC™ Device
Le79228
Le79228
codec 1
codec 2
codec 3
codec 4
codec 1
codec 2
codec 3
codec 4
Le79252
Le79232
Le79232
Le79252
Device
Device
Device
Device
External Unbalanced Ring
SLIC
SLIC
SLIC
SLIC
Internal Balanced Ring
PREVIEW
Applications
Features
Software interface using VP API-II
Software downloadable, field
upgradable, expandable
Provides expanded line and circuit
testing in conjunction with Zarlink’s
VE790 Series of chip sets
DTMF detection
Quad tone and howler tone
generation
Arbitrary single tone detection
15-kHz energy detection
SNR tests
Dial pulse measurement
CO
IVD
PBX
KTS
“Ring” Signal
or
(optional)
(optional)
Le75282
Le75282
LCAS
LCAS
LE79112
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le79112 Summary of contents
Page 1
... Interface (API). Firmware residing in the DSP’s RAM provides enhanced call processing and test capabilities. The Le79112 VCP in combination with a VE790 Series chip set, supports channels of universal telephone line interface with high-level voice functionality. The solution enables the design of a low-cost, highperformance, fully software programmable line interface for multiple country applications ...
Page 2
... LE79112 VOICE CONTROL PROCESSOR Major Call Control Features 32-Channel Call Control • Control/Coordination of Call Processing • CID high level interface • Control for Metering DTMF Detection • lines simultaneously • Q.24 compliant Pulse Dial Timing with Decode • 32 simultaneous channels • Adjustable timing parameters for Make, Break, Flash, and ...