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參數(shù)資料
| 型號(hào)： | SI2494-A-FM |
| 廠商： | Silicon Laboratories Inc |
| 文件頁數(shù)： | 11/70頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC ISOMODEM 56KBPS 38-QFN |
| 標(biāo)準(zhǔn)包裝： | 364 |
| 系列： | * |
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Si2494/39
Rev. 1.0
19
This device is ideal for embedded modem applications due to its small board space, low power consumption, and
global compliance. The Si2494/39 solution includes a silicon DAA using Silicon Laboratories’ proprietary third-
generation DAA technology. This highly-integrated DAA can be programmed to meet worldwide PTT specifications
for ac termination, dc termination, ringer impedance, and ringer threshold. In addition, the Si2494/39 has been
designed to meet the most stringent worldwide requirements for out-of-band energy, billing-tone immunity, surge
immunity, and safety requirements.
The Si2494/39 allows for rapid integration into existing modem applications by providing a serial interface that can
directly communicate to either a microcontroller via a UART interface or a PC via an RS-232 port. This interface
allows for PC evaluation of the modem immediately upon powerup via the AT commands using standard terminal
software.
4.1. Host Interface
The Si2494/39 interfaces to the host processor through either an asynchronous serial interface, a synchronous
Serial Peripheral Interface (SPI), or a parallel interface.
The default is asynchronous serial communication.
Selection of either SPI or parallel interface is done on power-up with reset strapping.
Please refer to “AN93:
ISOmodem Chipset Family Designer's Guide” for details.
4.1.1. Asynchronous Serial Interface
The Si2494/39 supports asynchronous serial communication with data terminal equipment (DTE) at rates up to
307.2 kbps with the standard serial UART format. Upon powerup, the UART baud rate is automatically detected
using the autobaud feature.
4.1.2. Serial Peripheral Interface (SPI)
The serial peripheral interface (SPI) provides a flexible synchronous serial bus for host processor and Si2494/39
ISOmodem communication. When the Si2494/39 is powered up with SPI mode enabled the modem becomes an
SPI slave, and the pins are configured to SS (slave select input, active low), MOSI (serial data input to modem),
MISO (serial data output from modem) and SCLK (serial data clock input).
Each SPI operation consists of a
control-and-address byte and a data byte.
4.1.3. Parallel Interface
The Si2494/39 can also communicate via a parallel interface. The parallel interface is an 8-bit data bus with a
single bit address to memory mapped registers.
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| Si2494-A-FM18-EVB | 功能描述:網(wǎng)絡(luò)開發(fā)工具 38pin Si2494+ Si3018 ISOmodem Eval Board RoHS:否 制造商:Rabbit Semiconductor 產(chǎn)品:Development Kits 類型:Ethernet to Wi-Fi Bridges 工具用于評(píng)估:RCM6600W 數(shù)據(jù)速率:20 Mbps, 40 Mbps 接口類型:802.11 b/g, Ethernet 工作電源電壓:3.3 V |
| SI2494-A-FMR | 制造商:Silicon Laboratories Inc 功能描述:56 KBPS, V.92 ISOMODEM +VOICE SYSTEM-SIDE - LEAD-FREE - Tape and Reel 制造商:Silicon Laboratories Inc 功能描述:IC ISOMODEM 56KBPS 38-QFN 制造商:Silicon Laboratories Inc 功能描述:56KBPS V.92 ISOMODEM |
| SI2494-A-GM | 功能描述:IC ISOMODEM 56KBPS 38-QFN RoHS:是 類別:集成電路 (IC) >> 接口 - 調(diào)制解調(diào)器 - IC 和模塊 系列:* 標(biāo)準(zhǔn)包裝:25 系列:- 數(shù)據(jù)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(yīng)商設(shè)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 |
| SI2494-A-GMR | 制造商:Silicon Laboratories Inc 功能描述:56 KBPS, V.92 ISOMODEM +VOICE SYSTEM-SIDE - LEAD-FREE - Tape and Reel 制造商:Silicon Laboratories Inc 功能描述:IC ISOMODEM 56KBPS 38-QFN |
| SI24R1 | 制造商:SIRECTIFIER 制造商全稱:Sirectifier Semiconductors 功能描述:完全兼容 NRF24L01P,超低功耗高性能 2.4GHz GFSK 無線收發(fā)芯片 |
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