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參數(shù)資料
| 型號： | DS2143 |
| 英文描述： | E1/ISDN-PRI framing transceiver |
| 中文描述： | E1控制器 |
| 文件頁數(shù)： | 2/44頁 |
| 文件大?。?/td> | 552K |
| 代理商： | DS2143 |
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DS2143/DS2143Q
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can access. These internal registers are used to configure the device and obtain information from the E1
link. The device fully meets al l of the latest E1 specifications, including CCITT G.704, G.706, and
G.732.
1.0 INTRODUCTION
The DS2143 E1 Controller has four main sections: the receive side, the transmit side, the line interface
controller, and the parallel control port. See the Block Diagram. On the receive side, the device will
clock in the serial E1 stream via the RPOS and RNEG pins. The synchronizer will locate the frame and
multiframe patterns and establish their respective positions. This information will be used by the rest of
the receive side circuitry.
The DS2143 is an “off-line” framer, which means that all of the E1 serial stream that goes into the device
will come out of it unchanged. Once the E1 data has been framed to, the signaling data can be extracted.
The two-frame elastic store can either be enabled or bypassed.
The transmit side clocks in the unframed E1 stream at TSER and add in the framing pattern and the
signaling. The line interface control port will update line interface devices that contain a serial port. The
parallel control port contains a multiplexed address and data structure which can be connected to either a
microcontroller or microprocessor.
Reader’s Note:
This data sheet assumes a particular nomenclature of the E1 operating environment. There are 32 8-bit
timeslots in an E1 systems which are number 0 to 31. Timeslot 0 is transmitted first and received first.
These 32 timeslots are also referred to as channels with a numbering scheme of 1 to 32. Timeslot 0 is
identical to channel 1, timeslot 1 is identical to channel 2, and so on. Each timeslot (or channel) is made
up of 8 bits which are numbered 1 to 8. Bit number 1 is the MSB and is transmitted first. Bit number 8 is
the LSB and is transmitted last. Throughout this data sheet, the following abbreviations will be used:
FAS
CRC4
CAS
CCS
MF
Sa
Si
E-bit
Frame Alignment Signal
Cyclical Redundancy Check
Channel Associated Signaling
Common Channel Signaling
Multiframe
Additional bits
International bits
CRC4 Error Bits
相關PDF資料 |
PDF描述 |
|---|---|
| DS2143Q | E1/ISDN-PRI framing transceiver |
| DS21455 | Quad T1/E1/J1 Transceivers |
| DS21455N | Quad T1/E1/J1 Transceivers |
| DS21458 | Quad T1/E1/J1 Transceivers |
| DS21458N | Quad T1/E1/J1 Transceivers |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| DS2143N | 功能描述:網(wǎng)絡控制器與處理器 IC E1 Controller w/Elastic Store RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| DS2143Q | 功能描述:網(wǎng)絡控制器與處理器 IC RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| DS2143Q/T&R | 制造商:Maxim Integrated Products 功能描述:IC CONTROLLER E1 5V LP 44-PLCC 制造商:Maxim Integrated Products 功能描述:Network Controller & Processor ICs E1 Controller w/Elastic Store |
| DS2143Q/T&R | 功能描述:網(wǎng)絡控制器與處理器 IC E1 Controller w/Elastic Store RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| DS2143Q+ | 功能描述:網(wǎng)絡控制器與處理器 IC E1 Controller w/Elastic Store RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
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