- 您现在的位置：买卖IC网 > PDF目录1924 > IDT82P20416DBFG (IDT, Integrated Device Technology Inc)IC LIU T1/E1/J1 16CH SH 484BGA PDF资料下载
参数资料
| 型号： | IDT82P20416DBFG |
| 厂商： | IDT, Integrated Device Technology Inc |
| 文件页数： | 36/121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 |
第1页第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页第28页第29页第30页第31页第32页第33页第34页第35页当前第36页第37页第38页第39页第40页第41页第42页第43页第44页第45页第46页第47页第48页第49页第50页第51页第52页第53页第54页第55页第56页第57页第58页第59页第60页第61页第62页第63页第64页第65页第66页第67页第68页第69页第70页第71页第72页第73页第74页第75页第76页第77页第78页第79页第80页第81页第82页第83页第84页第85页第86页第87页第88页第89页第90页第91页第92页第93页第94页第95页第96页第97页第98页第99页第100页第101页第102页第103页第104页第105页第106页第107页第108页第109页第110页第111页第112页第113页第114页第115页第116页第117页第118页第119页第120页第121页
IDT82P20416
16-CHANNEL SHORT HAUL T1/E1/J1 LINE INTERFACE UNIT
Functional Description
21
December 17, 2009
When RIM is high, impedance matching is configured on a per-
channel basis. Three kinds of impedance matching are all supported
and selected by the R_TERM[2:0] bits (b2~0, RCF0,...) and the R120IN
bit (b4, RCF0,...). The R_TERM[2] bit (b2, RCF0,...) should be set to
match internal or external impedance. If the R_TERM[2] bit (b2,
RCF0,...) is ‘0’, internal impedance matching is enabled. The R120IN bit
(b4, RCF0,...) should be set to select Partially Internal Impedance
Matching or Fully Internal Impedance Matching. The internal program-
mable resistor (IM) is determined by the R_TERM[1:0] bits (b1~0,
RCF0,...). If the R_TERM[2] bit (b2, RCF0,...) is ‘1’, external impedance
matching is enabled. The configuration of the R120IN bit (b4, RCF0,...)
and the R_TERM[1:0] bits (b1~0, RCF0,...) is ignored.
A twisted pair cable can be connected with a 1:1 transformer or
without a transformer (transformer-less), while a coaxial cable must be
connected with a 1:1 transformer. Table 2 lists the recommended imped-
the connection for one channel.
The transformer-less connection will offer a termination option with
reduced cost and board space. However, the waveform amplitude is not
standard compliant, and surge protection and common mode depres-
sion should be enhanced depending on equipment environment.
Figure-4 Receive Differential Line Interface with Twist-
ed Pair Cable (with transformer)
Figure-5 Receive Differential Line Interface with Coax-
ial Cable (with transformer)
Table-2 Impedance Matching Value in Receive Differential Mode
Cable Condition
Partially Internal Impedance Matching
(R120IN = 0) 1
Fully Internal Impedance Matching
(R120IN = 1) 1, 2
External Impedance Matching
R_TERM[2:0]
Rr
R_TERM[2:0]
Rr
R_TERM[2:0] 3
Rr
T1 100
twisted pair (with transformer)
000
120
000
(open)
1XX
100
J1 110
twisted pair (with transformer)
001
110
E1 120
twisted pair (with transformer)
010
120
E1 75
coaxial (with transformer)
011
75
T1 100
twisted pair (transformer-less4)
000
(not supported)
100
J1 110
twisted pair (transformer-less)
001
110
E1 120
twisted pair (transformer-less)
010
120
Note:
1. Partially Internal Impedance Matching and Fully Internal Impedance Matching are not supported when RIM is low.
2. Fully Internal Impedance Matching is not supported in transformer-less applications.
3. When RIM is low, the setting of the R_TERM[2:0] bits is ignored.
4. In transformer-less applications, the device should be protected against overvoltage. There are three important standards for overvoltage protection:
UL1950 and FCC Part 68;
Telcordia (Bellcore) GR-1089
ITU-T K.20, K.21 and K.41
1:1
Rr
RTIPn
RRINGn
IM
6.0 Vpp
1:1
Rr
RTIPn
RRINGn
IM
4.74 Vpp
相关PDF资料 |
PDF描述 |
|---|---|
| IDT82P20516DBFG | IC LIU T1/E1/J1 16CH SH 484BGA |
| IDT82P2281PF | TXRX T1/E1/J1 LONG/SHORT 80-TQFP |
| IDT82P2282PF | TXRX T1/J1/E1 2CHAN 100-TQFP |
| IDT82P2284BB | TXRX T1/J1/E1 4CHAN 208-PBGA |
| IDT82P2288BBG | TXRX OCTAL T1/E1/J1 256-PBGA |
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 |
发布紧急采购，3分钟左右您将得到回复。