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參數(shù)資料
型號: 73M2921
廠商: Electronic Theatre Controls, Inc.
英文描述: Advanced Single Chip Modem
中文描述: 先進(jìn)的單芯片調(diào)制解調(diào)器
文件頁數(shù): 1/41頁
文件大小: 222K
代理商: 73M2921
Rev M
Advanced Information
73M2921
Advanced Single
Chip Modem
February 1999
DESCRIPTION
The 73M2921 is a CMOS integrated circuit which
provides all the modem “Data Pump” functions
required to implement a V.22bis data modem. It
consists of a DSP (Digital Signal Processor) core
with RAM and ROM data memory, ROM instruction
memory, and register mapped input/output functions
including timers, interrupts,
Σ
ADC and DAC ports
and Serial Data I/O.
Once the 73M2921 has been initialized, all call
progress and modem handshaking is automatic.
The default conditions may be changed as required
for country specific or custom applications.
The 73M2921 provides DTMF tone generation and
detection, precise call progress detect and ADSI
functions such as CAS tone detection.
Other features include a parallel interface control
port between the host processor and the 73M2921.
A synchronous serial data channel provides
synchronizing clocks RXCLK and TXCLK from the
modem pump to the controller.
The 73M2921 contains an oscillator and power
control features.
The host controller function can be implemented with
a 73M2910 communications micro controller or
another commercial microcontroller (such as the
68302). The 73M2921 has been optimized to work
with the 73M2910 synchronous serial port.
FEATURES
Automatic handshaking for all data modes
Data Speeds:
V.22bis - 2400 b/s
V.22, Bell 212 - 1200 b/s
V.21, Bell 103 - 300 b/s
V.23 1200 b/s - 75 b/s
Bell 202 1200 b/s
Facsimile Speeds:
V.29 - 9600, 7200 b/s
V.27ter - 4800, 2400 b/s
V.21 ch 2 - 300 b/s
V.8bis applications
Designed for 3.3 and 5-Volt systems.
Low operating power.
Speaker monitor output
Provides 2 tone generators for single tone or
DTMF generation
Provides DTMF tone detection
Provides 4 precise and 1 imprecise call
progress filters and corresponding detect
bits with programmable thresholds and
frequencies
Provides CAS tone detection for ADSI and
CLASS
feature support
Supports parallel (8 bit) control, and
synchronous serial data I/O
73M2921 provides a microcontroller inter-
rupt
Packaging: The 73M2921 is available in a
QFP production package. A PGA package is
available for prototyping
相關(guān)PDF資料
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
73M2921-IG 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Advanced Single Chip Modem
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73M2AR001F 功能描述:RES 0.001 OHM 1% 2W 2512 制造商:cts resistor products 系列:73M2A 包裝:帶卷(TR) 零件狀態(tài):在售 電阻值:1 MOhms 容差:±1% 功率(W):2W 成分:金屬薄膜 特性:電流檢測 溫度系數(shù):±100ppm/°C 工作溫度:-55°C ~ 155°C 封裝/外殼:2512(6432 公制) 供應(yīng)商器件封裝:2512 大小/尺寸:0.248" 長 x 0.126" 寬(6.30mm x 3.20mm) 高度 - 安裝(最大值):0.043"(1.10mm) 端子數(shù):2 故障率:- 標(biāo)準(zhǔn)包裝:4,000
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