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DS2149DK/DS21349DK T1/J1 Line Interface Unit Design Kit
BOARD FLOORPLAN
Figure 1 shows the board layout for the DS2149DK. The DS2149 PLCC socket is in the center of the board. The
line-side bantam connectors for the Tx and Rx differential pairs and transformers are at the bottom of the board,
while the system connector and configuration jumpers are at the top. The LEDs for INT, INLOOP, and RCL/QPD
are in the center of the board, right above the DS2149 socket. The power-supply connectors and power indicator
LED are in the upper left corner of the board, while the DB9 serial connector is the upper left. A T1 oscillator sits to
the left of the DS2149 socket below a switch for changing the voltage to the DS2149 socket from 5V to 3.3V.
Please refer to the general locations on the board when this document references specific items on the DS2149DK.
Figure 1. Board Floorplan
POWER JACKS
SYSTEM CONNECTOR
SERIAL
LEDs
NLOOP
PORT
PWR
LED
RCL
INT
Dallas
Semiconductor
DS2149DK/
DS21349DK
OSCILLATOR
DS2149
T1
CONFIGURATION
JUMPERS
TRANSFORMERS
Tx
Tx
Rx
CONFIGURATION
Tx
LINE CONNECTORS
3 of 14
Rx
SWITCHES
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相关代理商/技术参数
DS21349Q 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
DS21349Q/T&R+ 制造商:Maxim Integrated Products 功能描述:FRAMER J1/T1 3.3V 28PLCC - Tape and Reel
DS21349Q/T&R 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
DS21349Q+ 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
DS21349Q+T&R 制造商:Maxim Integrated Products 功能描述:FRAMER J1/T1 3.3V 28PLCC - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC LIU T1/J1 3.3V 28-PLCC
DS21349Q+T&R 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
DS21349QN 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