The W681310 is a general-purpose single channel PCM CODEC with pin-selectable
-Law
or A-Law
companding. The device is compliant with the ITU G.712 specification. It operates from a single +3V
power supply and is available in 20-pin SOG, SSOP and TSSOP package options. Functions
performed include digitization and reconstruction of voice signals, and band limiting and smoothing
filters required for PCM systems. W681310 performance is specified over the industrial temperature
range of –40C to +85C.
The W681310 includes an on-chip precision voltage reference and an additional power amplifier,
capable of driving 300 loads differentially up to a level of 3.544V peak-to-peak. The analog section is
fully differential, reducing noise and improving the power supply rejection ratio. The data transfer
protocol supports both long-frame and short-frame synchronous communications for PCM
applications, and IDL and GCI communications for ISDN applications. W681310 accepts eight master
clock rates between 256 kHz and 4.800 MHz, and an on-chip pre-scaler automatically determines the
division ratio for the required internal clock.
For fast evaluation and prototyping purposes, the W681310DK development kit is available.
2. FEATURES
Single +3V power supply (2.7V to 5.25V)
Typical power dissipation of 10 mW,
power-down mode of 0.5
W
Fully-differential analog circuit design
On-chip precision reference of 0.886 V for
a -5 dBm TLP at 600
Push-pull power amplifiers with external
gain adjustment with 300
load capability
Eight master clock rates of 256 kHz to
4.800 MHz
Pin-selectable
-Law
and
A-Law
companding (compliant with ITU G.711)
CODEC A/D and D/A filtering compliant
with ITU G.712
Industrial temperature range (–40C to
+85C)
Packages: 20-pin SOG (SOP), SSOP and
TSSOP
Pb-Free package options available
ApplIcations
VoIP, Voice over Networks
Digital telephone
systems
and
communication
Wireless voice devices
PABX/SOHO systems
Local loop card
SOHO routers
Fiber-to-curb equipment
Enterprise phones
ISDN equipment
Modems/PC cards
Digital Voice Recorders
-2-
Publication Release Date: February 2015
Revision B18
W681310
3. BLOCK DIAGRAM
Receive
PCM
Interface
BCLKR
FSR
PCMR
BCLKT
FST
PCMT
Re
Int
PC
cei
erf
M
ve
ace
Transmit
PCM
Interface
Tra Int
ns PC erf
mitM ace
G.712 CODEC
G.711
/A - Law
PAO+
PAO-
PAI
RO -
AO
AI+
AI-
/A-Law
V
REF
512 kHz
256 kHz
MCLK
256 kHz,
512 kHz,
1536 kHz,
1544 kHz,
2048 kHz,
2560 kHz
4096 kHz
& 4800 kHz
Pre -scaler
Scaler
8 kHz
Voltage reference
V
AG
Power Conditioning
V
DD
PUI
V
SS
-3-
Publication Release Date: February 2015
Revision B18
W681310
4. TABLE OF CONTENTS
1. GENERAL DESCRIPTION.................................................................................................................. 2
2. FEATURES ......................................................................................................................................... 2
10.1. General Parameters .................................................................................................................. 22
10.2. Analog Signal Level and Gain Parameters ............................................................................... 23
10.3. Analog Distortion and Noise Parameters .................................................................................. 24
10.4. Analog Input and Output Amplifier Parameters ......................................................................... 25
10.5. Digital I/O ................................................................................................................................... 27
Which European, American and Japanese chip manufacturers are currently promoting automotive electronics ADAS? I know that there are Fujitsu, Freescale, TI, ADI, Broadcom, Xilinx, Altera, ST and other ...
Enthusiast cgglzpy added a tree command to MicroPython, which makes it easier to view file lists.class TREE:def __repr__(self):self.__call__()return ""def __call__(self, path=".", level=0, is_last=Fal...
Routing is completely transparent to the application layer. The application only needs to send data to any device down to the stack, and the stack will be responsible for finding the path. In this way...
Advantages of edge computingEdge computing, also known as distributed computing, fog computing, and multilateral computing, has the main advantage of completing the integration, analysis, and computat...
[table=98%][tr][td][table=98%][tr][td][align=center]Corridor Human Sensor Timer[/align][/td][/tr][tr][td][/td][/tr][tr][td][/td][/tr][tr][td][/td][/tr][tr][td] [/td][/tr][tr][td][/td][/tr][tr][td][ali...
High efficiency and low standby power consumption are two major challenges in today's switching power supply design. Resonant topology or LLC topology is becoming increasingly popular because it ca...[Details]
Hardware designers have begun to adopt FPGA technology in high-performance DSP designs because it can provide 10-100 times faster computing than PC-based or microcontroller-based solutions. Previou...[Details]
Google's driverless technology is not only an eye-catching technology, but also a subversion of the car usage model.
Those who have watched anti-terrorism films and TV dramas must have been im...[Details]
Remote keyless entry (RKE) systems have become popular with users, with more than 80% of new cars in North America and more than 70% in Europe equipped with RKE systems. In addition to the obvious ...[Details]
With the development and widespread application of computer technology, especially in the field of industrial control, computer communication is particularly important. Although serial communication g...[Details]
Overview
As a remote network communication control method with advanced technology, high reliability, complete functions and reasonable cost, CAN-bus has been widely used in various automa...[Details]
LED guardrail lights use fluorescent tubes or LEDs as light sources and continuous guardrails as carriers to form an approximately linear guardrail light strip. This article mainly introduces...[Details]
Nowadays, more and more people have digital cameras. The convenience and speed of digital cameras have gradually replaced film cameras and become the main tool for people's daily photography. The n...[Details]
Currently, high-frequency and high-efficiency DCDC converters are increasingly used in automotive electronic systems.
High switching frequency can use smaller power inductors and output filter...[Details]
1 Introduction
With the development of computer technology and information technology in the world, the global information age has arrived. All countries are formulating their own development p...[Details]
Synchronous buck designs are becoming increasingly difficult, and the selection of suitable ICs is becoming quite narrow. This Design Idea combines a current-mode PWM IC used in a flyback regulator...[Details]
TMC428 is a stepper motor motion controller from TRINAMIC. It can reduce the workload of motor control software design and development costs. The 3-axis stepper motor drive control system based on ...[Details]
As a type of iron battery, lithium iron phosphate battery (hereinafter referred to as lithium iron battery) has always been widely concerned by industry friends (some people say that lithium iron b...[Details]
As countries around the world are leaning towards the new energy battery industry, lithium-ion power batteries, as the ideal energy source for the development of the 21st century, are attracting mo...[Details]
Automotive electronics are in a noisy environment
,
so automotive electronics must have excellent electromagnetic compatibility (EMC) performance. The most important part of automotive elec...[Details]
Embedded System
京公网安备 11010802033920号
EEWORLD
