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参数资料
| 型号： | PEF80902 |
| 厂商： | INFINEON TECHNOLOGIES AG |
| 英文描述： | 4B3T Second Gen. Modular ISDN NT(Ordinary) |
| 中文描述： | 4B3T二将军模块化综合业务数字网新台币（普通） |
| 文件页数： | 23/83页 |
| 文件大小： | 1168K |
| 代理商： | PEF80902 |
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PEF 80902
Functional Description
Data Sheet
15
2001-11-12
2.3
U-Transceiver
The statemachine of the U-Transceiver is compatible to the NT state machine in the PEB
8090 documentation [9], but includes some minor changes for simplification and
compliance to Ref. [1].
Basic configurations are selected via pin strapping
2.3.1
4B3T Frame Structure
The 4B3T U-interface performs full duplex data transmission and reception at the U-
reference point according to ETSI TS 102 080 and FTZ 1TR 220. It applies the 4B3T
block code together with adaptive echo cancelling and equalization. Transmission
performance shall be such, that it meets all ETSI and FTZ test loops with margin.
The U-interface is designed for data transmission on twisted pair wires in local telephone
loops, with basic access to ISDN and a user bit rate of 144 kbit/s.
The following information is transmitted over the twisted pair:
Bidirectional:
–
B1, B2, D data channels
–
120 kHz Symbol clock
–
1 kHz Frame
–
Activation
–
1 kbit/s Transparent Channel (M symbol), (not implemented)
From LT to NT side:
–
Power feeding
–
Deactivation
–
Remote control of test loops (M symbol)
From NT to LT side:
–
Indication of monitored code violations (M symbol)
Performance Requirements according to FTZ 1 TR 220 (August 1991):
On the U-interface, the following transmission ranges are achieved without additional
signal regeneration on the loop (bit error rate
≤
10
-7
):
with noise
: ≥
4.2 km on wires of 0.4 mm diameter and
≥
8 km on 0.6 mm wires
without noise
: ≥
5 km on wires of 0.4 mm diameter and
≥
10 km on 0.6 mm wires
Note: Typical attenuation of FTZ wires of 0.4 mm diameter is about 7dB/km in contrast
to ETSI wires of 0.4 mm with about 8dB/km.
The transmission ranges can be doubled by inserting a repeater for signal regeneration.
Performance requirements according to ETSI TS 102 080 are met, too.
1 ms frames are transmitted via the U-interface, each consisting of:
108 symbols: 144 bit scrambled and coded B1 + B2 + D data
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相关代理商/技术参数 |
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|---|---|
| PEF80902HV1.1 | 功能描述:网络控制器与处理器 IC ISDN RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流（最大值）:595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray |
| PEF80902HV1.1TR | 制造商:Lantiq 功能描述: |
| PEF80902HV11XP | 制造商:Lantiq 功能描述:ISDN CTLR S/T/U 192Kbps 3.3V 44-Pin MQFP Tray |
| PEF8091(64MQFP) | 制造商:未知厂家 制造商全称:未知厂家 功能描述:ISDN Line Interface |
| PEF8091(64TQFP) | 制造商:未知厂家 制造商全称:未知厂家 功能描述:ISDN Line Interface |
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