82V1671J IDT, Integrated Device Technology Inc, 82V1671J Datasheet - Page 16

• Manufacturer Part Number: 82V1671J
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of 82V1671J

• Number Of Channels: 4
• On-hook Transmission: Yes
• Polarity Reversal: Yes
• On-chip Ring Relay Driver: Yes
• Operating Supply Voltage (typ): 3.3V
• Operating Temp Range: -40C to 85C
• Package Type: PLCC
• Operating Temperature Classification: Industrial
• Pin Count: 28
• Mounting: Surface Mount
• Operating Current: 95mA
• Operating Supply Voltage (max): 3.465V
• Operating Supply Voltage (min): 3.135V
• Lead Free Status / RoHS Status: Not Compliant

3
3.1
3.1.1
chipset:
3.1.2
are also integrated in the RSLIC-CODEC chipset:
RSLIC & CODEC CHIPSET
All BORSCHT functions are integrated in the RSLIC-CODEC
• Battery feeding
• Over voltage protection
• Ringing
• Supervision (signaling)
• Coding
• Hybrid
• Testing
Besides full BORSCHT functions, the following additional functions
• Tone generators
Ring
Tip
Ring
Tip
Ring
Tip
Ring
Tip
The chipset provides programmable DC feeding characteristics.
Over voltage protection is realized by the RSLIC and additional
protection circuits.
The chipset supports both internal and external ringing modes.
The chipset supports off-hook and ground-key detection, DC and
AC ring trip detection.
Supports A/µ-law compressed code and linear code.
Provides hybrid for 2/4-wire conversion.
Supports integrated test and diagnostic functions (ITDF).
The CODEC provides two tone generators (TG1 & TG2) per
channel. The tone generators can be used to generate DTMF
FUNCTIONAL DESCRIPTION
FUNCTIONS OVERVIEW
BASIC FUNCTIONS
ADDITIONAL FUNCTIONS
RSLIC 2
RSLIC 3
RSLIC 4
RSLIC 1
Battery
Switch
Driver
Line
#
#
#
#
Current
Control
Sensor
Stage
Logic
Input
Ring
Trip
Figure - 1 Line Circuit Functions Included in the RSLIC-CODEC Chipset
CODEC
Channel 1
Channel 2
Channel 2
Channel 3
Channel 4
Generator
SLIC Control
Off-hook
Detector
Filter
FSK
Interface
ADC
DAC
UTD
Ground Key
ITDF
Detector
Filters and Gain
Programmable
Generators
16
Tone
3.1.3
solution for line card designs. By programming the corresponding
registers or coefficient RAM in the CODEC, users can design one line
card to meet different requirements worldwide. That means, adjusting
the receive/transmit gain and the transhybrid balance can be realized by
software with a single hardware design.
Control Logic
General
• FSK generator
• Universal Tone Detection (UTD)
• Line polarity reversal
The RSLIC-CODEC chipset provides a highly flexible programmable
The chipset provides many programmable functions including:
• DC feeding characteristics
• Impedance matching
• Transhybrid balance
• Frequency response correction in transmit and receive paths
• Gain in transmit and receive paths
• Off-hook and ground-key detect threshold and debounce interval
• AC and DC ring trip thresholds
• Internal ringing frequency, amplitude and DC ringing offset voltage
• Analog and digital test loopbacks
These functions are described in detail in the following chapters.
Ring Trip
Detector
signals, test tones, dial tones etc.
The chipset provides a built-in FSK generator for sending Caller
ID information.
The chipset provides a built-in UTD unit per channel to detect
special tones in the receive or transmit path (fax and modem
tones, for example)
The chipset supports teletax metering by reversing the polarity of
the Tip/Ring voltage.
Compander
Generator
PCM
Ramp
PROGRAMMABLE FUNCTIONS
DSP
Core
Assignment
Timeslot
Generator
Reverse
Polarity
IDT82V1671/IDT82V1671A, IDT82V1074
Ring
Serial Control
Interface
PCM/GCI
Interface
MPI Interface
PCM Interface
GCI Interface