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參數(shù)資料
| 型號： | 73D2248A |
| 廠商： | TDK Corporation |
| 英文描述： | MNP5, V.42bis Datacom Modem Device Set |
| 中文描述： | MNP5，V.42bis壓縮數(shù)據(jù)通信調(diào)制解調(diào)器設備集 |
| 文件頁數(shù)： | 3/9頁 |
| 文件大小： | 66K |
| 代理商： | 73D2248A |
73D2248A/2348A
MNP5, V.42bis Datacom
Modem Device Set
3
PROTOCOLS
Microcom Networking Protocol (MNP)
MNP4 is a protocol offering error control while MNP5
offers data compression. Data to be transmitted is
broken into blocks of varying sizes, depending on
line conditions, and sent to the remote modem along
with a 16-bit Cyclic Redundancy Check (CRC) word.
If the algorithm used to derive the CRC word at the
transmitter does not produce an identical word when
exercised on the received data, a line error is
assumed, and the block is repeated. Data
compression is obtained by transmitting a short set
of characters for a longer redundant set. At the
receiver, the short string is replaced with the longer
string that it represented, and the data stream is
returned to its original state.
CCITT V.42 AND V.42BIS
The CCITT has ratified a set of protocols which
operate in a manner similar to MNP. MNP4
corresponds to V.42 while MNP5 corresponds with
V.42bis. Greater efficiency is offered, but the
tradeoff is a larger memory space requirement.
MNP5 requires an 8K buffer, while V.42bis requires
32K. Data files which show compression ratios
approaching 2:1 with MNP5 may show ratios of
nearly 4:1 with V.42bis.
ADDITIONAL INFORMATION
The TDK Semiconductor Corporation 73D2248/2348
Design Manual defines the AT commands. Please
contact your local TDK Semiconductor Corporation's
sales office for a copy of the TDK Semiconductor
Corporation's Protocol Design Manual.
相關PDF資料 |
PDF描述 |
|---|---|
| 73D2348A | MNP5, V.42bis Datacom Modem Device Set |
| 73K212AL | V.22, V.21, Bell 212A, Bell 103 Single-Chip Modem with Integrated Hybrid |
| 73K221AL | V.22, V.21, Bell 212A, Bell 103 Single-Chip Modem with Integrated Hybrid |
| 73K222AL | V.22, V.21, Bell 212A, 103 Single-Chip Modem |
| 73K222AL-IGT | V.22, V.21, Bell 212A, 103 Single-Chip Modem |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| 73D2348A | 制造商:TDK 制造商全稱:TDK Electronics 功能描述:MNP5, V.42bis Datacom Modem Device Set |
| 73E3N110IT1 | 制造商: 功能描述: 制造商:undefined 功能描述: |
| 73E3N299 | 制造商:undefined 功能描述: |
| 73E3R050F | 功能描述:RES 0.05 OHM 1% 1/4W 0805 制造商:cts resistor products 系列:73Ex 包裝:帶卷（TR） 零件狀態(tài):在售 電阻值:50 mOhms 容差:±1% 功率（W）:0.25W，1/4W 成分:厚膜 特性:電流檢測 溫度系數(shù):±100ppm/°C 工作溫度:-55°C ~ 125°C 封裝/外殼:0805（2012 公制） 供應商器件封裝:805 大小/尺寸:0.079" 長 x 0.049" 寬（2.00mm x 1.25mm） 高度 - 安裝（最大值）:0.026"（0.65mm） 端子數(shù):2 故障率:- 標準包裝:5,000 |
| 73E3R050G | 功能描述:RES 0.05 OHM 2% 1/4W 0805 制造商:cts resistor products 系列:73Ex 包裝:帶卷（TR） 零件狀態(tài):在售 電阻值:50 mOhms 容差:±2% 功率（W）:0.25W，1/4W 成分:厚膜 特性:電流檢測 溫度系數(shù):±100ppm/°C 工作溫度:-55°C ~ 125°C 封裝/外殼:0805（2012 公制） 供應商器件封裝:805 大小/尺寸:0.079" 長 x 0.049" 寬（2.00mm x 1.25mm） 高度 - 安裝（最大值）:0.026"（0.65mm） 端子數(shù):2 故障率:- 標準包裝:5,000 |
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