参数资料
型号: DS21Q42T+
厂商: Maxim Integrated Products
文件页数: 29/116页
文件大小: 0K
描述: IC FRAMER ENHANCED T1 4X 128TQFP
标准包装: 72
控制器类型: T1 调帧器
接口: 并行/串行
电源电压: 2.97 V ~ 3.63 V
电流 - 电源: 75mA
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 128-LQFP
供应商设备封装: 128-LQFP(14x20)
包装: 管件
DS21Q42
2 of 116
1. INTRODUCTION
The DS21Q42 is a superset version of the popular DS21Q41 quad T1 framer offering the new features
listed below. All of the original features of the DS21Q41 have been retained and software created for the
original device is transferable to the DS21Q42.
NEW FEATURES
Additional hardware signaling capability including:
– Receive signaling re-insertion to a backplane multiframe sync
– Availability of signaling in a separate PCM data stream
– Signaling freezing
– Interrupt generated on change of signaling data
Full HDLC controller with 64-byte buffers in both transmit and receive paths. Configurable for FDL
or DS0 access
Per-channel code insertion in both transmit and receive paths
Ability to monitor one DS0 channel in both the transmit and receive paths
RCL, RLOS, RRA, and RAIS alarms now interrupt on change of state
Detects AIS-CI
8.192 MHz clock synthesizer
Per–channel loopback
Ability to calculate and check CRC6 according to the Japanese standard
Ability to pass the F–Bit position through the elastic stores in the 2.048 MHz backplane mode
IEEE 1149.1 support
FEATURES
Four T1 DS1/ISDN–PRI/J1 framing transceivers
All four framers are fully independent
Frames to D4, ESF, and SLC–96 R formats
Each of the four framers contain dual two–frame elastic store slip buffers that can connect to
asynchronous backplanes up to 8.192 MHz
8–bit parallel control port that can be used directly on either multiplexed or non–multiplexed buses
(Intel or Motorola)
Extracts and inserts robbed bit signaling
Detects and generates yellow (RAI) and blue (AIS) alarms
Programmable output clocks for Fractional T1
Fully independent transmit and receive functionality
Generates and detects in–band loop codes from 1 to 8 bits in length including CSU loop codes
Contains ANSI one’s density monitor and enforcer
Large path and line error counters including BPV, CV, CRC6, and framing bit errors
Pin compatible with DS21Q44 E1 Enhanced Quad E1 Framer
3.3V-supply with 5V tolerant I/O; low power CMOS
Available in 128–pin TQFP package
相关PDF资料
PDF描述
DS21Q43-ATN IC FRAMER E1 QUAD 5V 128-TQFP
DS21Q44T+ IC FRAMER ENHANCED E1 4X 128TQFP
DS21Q50LN IC TRANSCEIVER E1 QD IND 100LQFP
DS21Q55 IC TXRX QUAD T1/E1/J1 SCT 256BGA
DS21Q59LN+ IC TXRX E1 QUAD 100-LQFP
相关代理商/技术参数
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DS21Q42T+ 功能描述:网络控制器与处理器 IC Enhanced Quad T1 Framer 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
DS21Q42TN 功能描述:网络控制器与处理器 IC Enhanced Quad T1 Framer 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
DS21Q43A 制造商:DALLAS 制造商全称:Dallas Semiconductor 功能描述:Quad E1 Framer
DS21Q43AT 功能描述:网络控制器与处理器 IC Quad E1 Framer 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
DS21Q43AT+ 功能描述:网络控制器与处理器 IC Quad E1 Framer 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