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SI3220-X-GQ 参数 Datasheet PDF下载

SI3220-X-GQ图片预览
型号: SI3220-X-GQ
PDF下载: 下载PDF文件 查看货源
内容描述: 双PROSLIC㈢可编程CMOS SLIC / CODEC [DUAL PROSLIC㈢ PROGRAMMABLE CMOS SLIC/CODEC]
分类和应用: 模拟传输接口电信集成电路电信电路
文件页数/大小: 112 页 / 1511 K
品牌: SILABS [ SILICON LABORATORIES ]
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S i 3 2 2 0 /2 5
D
U A L
P
R O
SLIC
®
P
R O G R A M M A B L E
C M O S S L I C / C
O D E C
Features
Performs all BORSCHT functions
Ideal for applications up to 18 kft
Internal balanced ringing to 65 V
rms
(Si3220)
External bulk ringer support (Si3225)
Software-programmable parameters:
Ringing frequency, amplitude, cadence,
and waveshape (Si3220)
Two-wire ac impedance
Transhybrid balance
DC current loop feed (18–45 mA)
Loop closure and ring trip thresholds
Ground key detect threshold
Automatic switching of up to three battery
supplies
On-hook transmission
Loop or ground start operation with
smooth/abrupt polarity reversal
Modem/fax tone detection
DTMF generation/decoding
Dual tone generators
A-Law/µ-Law, linear PCM
companding
PCM and SPI bus digital interfaces
with programmable interrupts
GCI mode support
3.3 or 5 V operation
GR-909 loop diagnostics
Audio diagnostics with loopback
12 kHz/16 kHz pulse metering
(Si3220)
FSK caller ID generation
Lead-free/RoHS-compliant
Part Number
Si3220
Si3225
Ringing
Method
Internal
External
Ringer
Applications
Digital loop carriers
Central Office telephony
Pair gain remote terminals
Wireless local loop
Private Branch Exchange (PBX) systems
Cable telephony
Voice over IP/voice over DSL
ISDN terminal adapters
Ordering Information
See “Dual ProSLIC Selection
Guide” on page 109.
U.S. Patent #6,567,521
U.S. Patent #6,812,744
Other patents pending
Description
The Dual ProSLIC
®
is a series of low-voltage CMOS devices that integrate both
SLIC and codec functionality into a single IC to provide a complete dual-channel
analog telephone interface in accordance with all relevant LSSGR, ITU, and ETSI
specifications. The Si3220 includes internal ringing generation to eliminate
centralized ringers and ringing relays, and the Si3225 supports centralized ringing
for long loop and legacy applications. On-chip subscriber loop and audio testing
allows remote diagnostics and fault detection with no external test equipment or
relays. The Si3220 and Si3225 operate from a single 3.3 or 5 V supply and
interface to standard PCM/SPI or GCI bus digital interfaces. The Si3200 linefeed
interface IC performs all high-voltage functions and operates from a 3.3 V or 5 V
supply as well as single or dual battery supplies up to 100 V. The Si3220 and
Si3225 are available in a 64-pin thin quad flat package (TQFP), and the Si3200 is
available in a thermally-enhanced 16-pin small outline (SOIC) package.
Functional Block Diagram
INT RESET
Si3220/25
CS
SCLK
SDO
SDI
SPI
Control
Interface
Pulse Metering
Subscriber Line
Diagnostics
Ringing
Generator
& Ring Trip
Sense
Dual Tone
Generators
Modem Tone
Detection
2-Wire AC
Impedance
Hybrid Balance
DTMF Decode
FSK
text
Caller ID
Codec A
SLIC A
Linefeed
Control
DAC
ADC
Codec B
TIP
Linefeed
Interface
Channel A
RING
Linefeed
Monitor
DTX
DRX
FSYNC
PCM /
GCI
Interface
DSP
SLIC B
Linefeed
Control
Gain Adjust
Loop Closure,
& Ground Key
Detection
Relay Drivers
DAC
ADC
TIP
Linefeed
Interface
Channel B
RING
PCLK
PLL
Programmable
Audio Filters
Linefeed
Monitor
Rev. 1.2 2/06
Copyright © 2006 by Silicon Laboratories
Si3220/25