The Si2494/39 ISOmodem
參數資料
型號： SI2439-A-FM
廠商： Silicon Laboratories Inc
文件頁數： 10/70頁
文件大?。?/td> 0K
描述： IC ISOMODEM 33.6KBPS 38-QFN
標準包裝： 364
系列： *
Si2494/39
18
Rev. 1.0
4. Functional Description
Figure 7. Functional Block Diagram
The Si2494/39 ISOmodem is a complete embedded modem chipset with integrated direct access arrangement
(DAA) that provides a programmable line interface to meet global telephone line requirements. This solution
includes a DSP data pump, modem controller, on-chip RAM and ROM, codec, DAA, analog output, and a PLL
clocking generator.
The Si2494/39 accepts standard modem AT commands and provides connect rates up to 56/33.6/14.4/2.4 kbps full-
duplex over the Public Switched Telephone Network (PSTN). The Si2494/39 features a complete set of modem
protocols including all ITU-T standard formats up to V.92.
The Si2494/39 features a direct interface to the Si3000 voice codec. Itself a highly integrated device, the Si3000
provides a codec, mixer, digital gain control, microphone preamp, microphone bias generator, speaker driver, and line
in/out ports for use with external amplifiers. The Si3000 codec combined with the features of the on-chip DSP
supports a voice handset and/or full-duplex speakerphone including programmable levels, frequency response,
limiting/soft-clipping and sidetone generation. Voice pass-through with optional compression supports implementation
of a tapeless answering machine (TAM), music-on-hold, voice menus, etc.
The ISOmodem provides numerous additional features for embedded modem applications. The modem includes full
type I and type II caller ID detection and decoding for global standards, DTMF tone generation and detection, Short
Message Service (SMS), distinctive ring detection, and call progress monitoring via a PWM audio output. Call
progress monitoring is supported through standard result codes. The modem is also programmable to meet global
settings. Because the Si2494/39 ISOmodem integrates the DAA, analog features, such as parallel phone detect,
overcurrent detection, and global PTT compliance with a single design, are included.
UART
Interface
Parallel
Interface
DS
P
DAA
Interface
PLL
Clocking
XTI
XTO
CLKOUT
C1
To Phone
Line
AOUT
Data Bus
Co
nt
ro
lle
r
Si
30
18
/1
0
RXD
TXD
CTS
RTS
DCD
ESC
RI
CS
WR
RD
A0
D0-D7
Program Bus
EEPROM
Interface
EESD
EECLK
EECS
C2
SPI
Interface
MISO
MOSI
SCLK
INT
RESET
ROM
RAM
SS
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相關代理商/技術參數
參數描述
Si2439-A-FM18-EVB 功能描述:網絡開發(fā)工具 38pin Si2439+ Si3018 ISOmodem Eval Board RoHS:否 制造商:Rabbit Semiconductor 產品:Development Kits 類型:Ethernet to Wi-Fi Bridges 工具用于評估:RCM6600W 數據速率:20 Mbps, 40 Mbps 接口類型:802.11 b/g, Ethernet 工作電源電壓:3.3 V
SI2439-A-FMR 制造商:Silicon Laboratories Inc 功能描述:33.6 KBPS ISOMODEM + VOICE - Tape and Reel 制造商:Silicon Laboratories Inc 功能描述:IC ISOMODEM 33.6KBPS 38-QFN
SI2439-A-GM 功能描述:IC ISOMODEM 33.6KBPS 38-QFN RoHS:是 類別:集成電路 (IC) >> 接口 - 調制解調器 - IC 和模塊 系列:* 標準包裝:25 系列:- 數據格式:V.21，V.22，V.23，V.29，V.32，V.34，V.90，V.92，Bell 103，Bell 212A 波特率:33.6k 電源電壓:3.3V 安裝類型:- 封裝/外殼:- 供應商設備封裝:- 包裝:托盤 配用:591-1013-ND - KIT DEV SOCKETMODEM PARALLEL591-1009-ND - KIT DEV SRL SOCKETMODEM UNIVERSL 其它名稱:MT5656SMI-P-V-34.R2-SPMT5656SMI-P-V-34.R2-SP-NDQ4711574
SI2439-A-GMR 制造商:Silicon Laboratories Inc 功能描述:33.6 KBPS ISOMODEM + VOICE - Tape and Reel 制造商:Silicon Laboratories Inc 功能描述:IC ISOMODEM 33.6KBPS 38-QFN
SI2456 制造商:SILABS 制造商全稱:SILABS 功能描述:V.90, V.34, V.32BIS ISOMODEM⑩ WITH INTEGRATED GLOBAL DAA
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