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參數資料
| 型號： | DS21Q55DK |
| 英文描述： | Quad T1/E1/J1 Transceiver Design Kit Daughter Card |
| 中文描述： | 四路T1/E1/J1收發器開發板子卡 |
| 文件頁數： | 1/99頁 |
| 文件大小： | 325K |
| 代理商： | DS21Q55DK |
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051401
PRELIMINARY
FEATURES
§
4 complete E1 (CEPT) PCM-30/ISDN-PRI
transceivers
§
Long and short haul line interfaces
§
32-bit or 128-bit crystal-less jitter attenuator
§
Frames to FAS, CAS, CCS, and CRC4 formats
§
4/8/16MHz clock synthesizer
§
Flexible system clock with automatic source
switching on loss of clock source
§
Two–frame elastic store slip buffer on the receive
side
§
Interleaving PCM bus operation up to 16.384MHz
§
Configurable parallel and serial port operation
§
Detects and generates remote and AIS alarms
§
Fully independent transmit and receive functionality
§
Four separate loopback functions
§
PRBS generation/detection/error counting
§
3.3V low power CMOS
DESCRIPTION
The DS21Q50 E1 Quad Transceiver contains all of the necessary functions for connection to 4 E1 lines. The
onboard clock/data recovery circuitry coverts the AMI/HDB3 E1 waveforms to an NRZ serial stream. The
DS21Q50 automatically adjusts to E1 22AWG (0.6 mm) twisted–pair cables from 0 to over 2km in length. The
device can generate the necessary G.703 waveshapes for both 75 ohm coax and 120 ohm twisted pair cables.
The onboard jitter attenuators (selectable to either 32 bits or 128 bits) can be placed in either the transmit or
receive data paths. The framers locate the frame and multiframe boundaries and monitor the data streams for
alarms. The device contains a set of internal registers, which the user can access and control the operation of the
unit via the parallel control port or serial port. The device fully meets all of the latest E1 specifications including
ITU-T G.703, G.704, G.706, G.823, G.732, and I.431, ETS 300 011, 300 233, and 300 166, as well as
CTR12 and CTR4.
ORDERING INFORMATION
DS21Q50L:
100-pin 14mm LQFP (0
0
C to 70
0
C)
DS21Q50LN:
100-pin 14mm LQFP (-40
0
C to 85
0
C)
§
Large counters for bipolar and code
violations, CRC4 code word errors, FAS
word errors, and E bits
§
8 additional user configurable output pins.
§
100-pin LQFP package (14mm)
1
100
100-PIN
LQFP
DS21Q50
Quad E1 Transceiver
www.dalsemi.com
相關PDF資料 |
PDF描述 |
|---|---|
| DS21Q55 | Quad T1/E1/J1 Transceiver |
| DS21Q55N | Quad T1/E1/J1 Transceiver |
| DS21S07A | SCSI Terminator |
| DS21S07AE | Terminator |
| DS21S07AS | Terminator |
相關代理商/技術參數 |
參數描述 |
|---|---|
| DS21Q55N | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Quad T1/E1/J1 Transceiver |
| DS21Q58 | 制造商:DALLAS 制造商全稱:Dallas Semiconductor 功能描述:E1 Quad Transceiver |
| DS21Q58L | 功能描述:網絡控制器與處理器 IC Quad E1 Transceiver RoHS:否 制造商:Micrel 產品:Controller Area Network (CAN) 收發器數量: 數據速率: 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 |
| DS21Q58L+ | 功能描述:網絡控制器與處理器 IC Quad E1 Transceiver RoHS:否 制造商:Micrel 產品:Controller Area Network (CAN) 收發器數量: 數據速率: 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 |
| DS21Q58LN | 功能描述:網絡控制器與處理器 IC RoHS:否 制造商:Micrel 產品:Controller Area Network (CAN) 收發器數量: 數據速率: 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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