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| 型号： | IDT82P20416DBFG |
| 厂商： | IDT, Integrated Device Technology Inc |
| 文件页数： | 71/121页 |
| 文件大小： | 0K |
| 描述： | IC LIU T1/E1/J1 16CH SH 484BGA |
| 标准包装： | 84 |
| 功能： | 线路接口单元（LIU） |
| 接口： | E1，J1，T1 |
| 电路数： | 16 |
| 电源电压： | 1.8V, 3.3V |
| 功率（瓦特）： | 3.10W |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 484-LFBGA |
| 供应商设备封装： | 484-CABGA（19x19） |
| 包装： | 托盘 |
| 包括： | AIS 警报检测器和发生器，回送功能，PRBS 发生器 / 检测器，远程检测器和发生器 |
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IDT82P20416
16-CHANNEL SHORT HAUL T1/E1/J1 LINE INTERFACE UNIT
Miscellaneous
53
December 17, 2009
4.3
POWER UP
No power up sequencing for the VDD inputs (1.8 V and 3.3 V) has to
be provided for the IDT82P20416. A Power-on reset will be initiated
during power up. Refer to Section 4.1 Reset.
4.4
HITLESS PROTECTION SWITCHING (HPS) SUM-
MARY
In today’s telecommunication systems, ensuring no traffic loss is
becoming increasingly important. To combat these problems, redun-
dancy protection must be built into the systems carrying this traffic.
There are many types of redundancy protection schemes, including 1+1
and 1:1 hardware protection without the use of external relays. Refer to
The IDT82P20416 provides an enhanced architecture to support both
protection schemes.
IDT82P20416 highlights for HPS support:
Independent programmable receive and transmit high impedance
for Tip and Ring inputs and outputs to support 1+1 and 1:1 redun-
dancy
Fully integrated receive termination, required to support 1:1 redun-
dancy
Enhanced internal architecture to guarantee High Impedance for
Tip and Ring Inputs and Outputs during Power Off or Power Fail-
ure
Asynchronous hardware control (OE, RIM) for fast global high
impedance of receiver and transmitter (hot switching between
working and backup board)
Figure-33 1+1 HPS Scheme, Differential Interface (Shared Common Transformer)
1:2
Tx
LIU on primary line card
LIU on backup line card
backplane
interface card
1:1
Tx
Rx
120
OE
RIM
OE
RIM
Hot switch control
VDDTn
VDDTn
VDDRn
VDDRn
VDDTn
VDDTn
VDDRn
VDDRn
Rx:
Partially Internal Impedance Matching mode. A fixed external 120
resistor is placed on the backplane and provides a common termination for
T1/J1/E1 applications. The R_TERM[2:0] bits (b2~0, RCF0,...) setting is as follows: ‘000’ for T1 100
twisted pair cable, ‘001’ for J1 110 twisted
pair cable, ‘010’ for E1 120
twisted pair cable and ‘011’ for E1 75 coaxial cable.
Tx:
Internal Impedance Matching mode. The
T_TERM[2:0] bits (b2~0, TCF0,...) setting is as follows: ‘000’ for T1 100 twisted pair cable, ‘001’
for J1 110
twisted pair cable, ‘010’ for E1 120 twisted pair cable and ‘011’ for E1 75 coaxial cable.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| IDT82P20416DBFG8 | 制造商:Integrated Device Technology Inc 功能描述:IC LIU T1/E1/J1 16CH SH 484BGA |
| IDT82P20416DBFGBLANK | 制造商:IDT 制造商全称:Integrated Device Technology 功能描述:16-Channel Short Haul T1/E1/J1 Line Interface Unit |
| IDT82P20516 | 制造商:IDT 制造商全称:Integrated Device Technology 功能描述:16-Channel Short Haul E1 Line Interface Unit |
| IDT82P20516BFBLANK | 制造商:IDT 制造商全称:Integrated Device Technology 功能描述:16-Channel Short Haul E1 Line Interface Unit |
| IDT82P20516BFGBLANK | 制造商:IDT 制造商全称:Integrated Device Technology 功能描述:16-Channel Short Haul E1 Line Interface Unit |
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