- 您现在的位置：买卖IC网 > PDF目录10608 > DS21348TN+ (Maxim Integrated Products)IC LIU T1/E1/J1 3.3V 44-TQFP PDF资料下载
参数资料
| 型号： | DS21348TN+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 41/76页 |
| 文件大小： | 0K |
| 描述： | IC LIU T1/E1/J1 3.3V 44-TQFP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 160 |
| 类型： | 线路接口装置（LIU） |
| 驱动器/接收器数： | 1/1 |
| 规程： | T1/E1/J1 |
| 电源电压： | 3.135 V ~ 3.465 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 44-TQFP |
| 供应商设备封装： | 44-TQFP（10x10） |
| 包装： | 托盘 |
| 产品目录页面： | 1429 (CN2011-ZH PDF) |
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页第36页第37页第38页第39页第40页当前第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
DS21348/DS21Q348
46 of 76
6.2 Loopbacks
6.2.1 Remote Loopback (RLB)
When RLB (CCR6.6) is enabled, the DS21348 is placed into remote loopback. In this loopback, data
from the clock/data recovery state machine will be looped back to the transmit path passing through the
jitter attenuator if it is enabled. The data at the RPOS and RNEG pins will be valid while data presented
at TPOS and TNEG will be ignored. See Figure 1-1 for details.
If the Automatic Remote Loop Back Enable (CCR6.5) is set to a one, the DS21348 will automatically go
into remote loop back when it detects the loop-up code programmed in the Receive Up Code Definition
Registers (RUPCD1 and RUPCD2) for a minimum of 5 seconds. When the DS21348 detects the loop
down code programmed in the Receive Loop-Down Code Definition registers (RDNCD1 and RDNCD2)
for a minimum of 5 seconds, the DS21348 will come out of remote loop back. The ARLB can also be
disabled by setting ARLBE to a zero.
6.2.2 Local Loopback (LLB)
When LLB (CCR6.7) is set to a one, the DS21348 is placed into Local Loopback. In this loopback, data
on the transmit-side will continue to be transmitted as normal. TCLK and TPOS/TNEG will pass through
the jitter attenuator (if enabled) and be output at RCLK and RPOS/RNEG. Incoming data from the line at
RTIP and RRING will be ignored. If Transmit Unframed All Ones (CCR3.7) is set to a one while in LLB,
TTIP and TRING will transmit all ones while TCLK and TPOS/TNEG will be looped back to RCLK and
RPOS/RNEG. See Figure 1-1 for more details.
6.2.3 Analog Loopback (ALB)
Setting ALB (CCR6.4) to a one puts the DS21348 in Analog Loopback. Signals at TTIP and TRING will
be internally connected to RTIP and RRING. The incoming signals at RTIP and RRING will be ignored.
The signals at TTIP and TRING will be transmitted as normal. See Figure 1-1 for more details.
6.2.4 Dual Loopback (DLB)
Setting both CCR6.7 and CCR6.6 to a one, LLB and RLB respectively, puts the DS21348 into Dual
Loopback operation. The TCLK and TPOS/TNEG signals will be looped back through the jitter
attenuator (if enabled) and output at RCLK and RPOS/RNEG. Clock and data recovered from RTIP and
RRING will be looped back to the transmit-side and output at TTIP and TRING. This mode of operation
is not available when implementing hardware operation. See Figure 1-1 for more details.
相关PDF资料 |
PDF描述 |
|---|---|
| VE-B5J-MX-F2 | CONVERTER MOD DC/DC 36V 75W |
| VE-B5J-MX-F1 | CONVERTER MOD DC/DC 36V 75W |
| VE-B5J-MW | CONVERTER MOD DC/DC 36V 100W |
| VE-B54-MX-F3 | CONVERTER MOD DC/DC 48V 75W |
| T 3402 000 | CONN CIR RCPT MALE 6POS PNL MNT |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS21348TN+ | 功能描述:网络控制器与处理器 IC 3.3V E1/T1/J1 Line Interface 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 |
| DS21348TNB | 功能描述:网络控制器与处理器 IC 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 |
| DS21348T-W | 功能描述:网络控制器与处理器 IC 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 |
| DS21349 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:3.3V T1/J1 Line Interface Unit |
| DS21349DK | 功能描述:网络开发工具 DS21349 Design Kit RoHS:否 制造商:Rabbit Semiconductor 产品:Development Kits 类型:Ethernet to Wi-Fi Bridges 工具用于评估:RCM6600W 数据速率:20 Mbps, 40 Mbps 接口类型:802.11 b/g, Ethernet 工作电源电压:3.3 V |
发布紧急采购，3分钟左右您将得到回复。