参数资料
型号: DS21FF42
厂商: DALLAS SEMICONDUCTOR
元件分类: Digital Transmission Controller
英文描述: DATACOM, FRAMER, PBGA300
封装: 27 X 27 MM, BGA-300
文件页数: 1/115页
文件大小: 534K
代理商: DS21FF42
1 of 115
040100
FEATURESP
Sixteen (16) or twelve (12) completely
independent T1 Framers in one small 27 mm
x 27 mm, 1.27 mm pitch BGA package
Each Multi-Chip Module (MCM) contains
four (FF) or three (FT) DS21Q42 die.
Each Quad Framer can be concatenated into
a Single 8.192 MHz Backplane Data Stream
IEEE 1149.1 JTAG-Boundary Scan
Architecture
DS21FF42 and DS21FT42 are pin
compatible with DS21FF44 and DS21FT44,
respectively, to allow the same footprint to
support T1 and E1 applications
300–pin MCM 1.27 mm pitch BGA package
(27 mm X 27 mm)
Low power 3.3V CMOS with 5V tolerant
input & outputs
1. MULTI-CHIP MODULE (MCM) DESCRIPTION
The Four x Four and Four x Three MCMs offer a high-density packaging arrangement for the DS21Q42
T1 Enhanced Quad Framer. Either three (DS21FT42) or four (DS21FF42) silicon die of these devices is
packaged in a Multi-Chip Module (MCM) with the electrical connections as shown in Figure 1-1.
All of the functions available on the DS21Q42 are also available in the MCM packaged version.
However, in order to minimize package size, some signals have been deleted or combined.
These
differences are detailed in Table 1-1. In the Four x Three (FT) version, the fourth quad framer is not
populated and hence all of the signals to and from this fourth framer are absent and should be treated as
No Connects (NC). Table 2-1 lists all of the signals on the MCM and it also lists the absent signals for
the Four x Three.
The availability of both a twelve and a sixteen-channel version allow the maximum framer density with
the lowest cost. For example, in a T3 application, two devices (one DS21FF42 and one DS21FT42)
provide a total of 28 framers without the additional cost and power consumption of any unused framers
that appear in an octal approach.
DS21FT42 / DS21FF42
4 X 3 Twelve Channel T1 Framer
4 X 4 Sixteen Channel T1 Framer
www.dalsemi.com
相关PDF资料
PDF描述
DS21FF42N DATACOM, FRAMER, PBGA300
DS21FT44N DATACOM, FRAMER, PBGA300
DS21FT44 DATACOM, FRAMER, PBGA300
DS21Q352 DATACOM, PCM TRANSCEIVER, PBGA256
DS21Q354 DATACOM, PCM TRANSCEIVER, PBGA256
相关代理商/技术参数
参数描述
DS21FF42+ 功能描述:网络控制器与处理器 IC 4x4 16/4x3 12 Chnl T1/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
DS21FF42N 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
DS21FF42N+ 功能描述:网络控制器与处理器 IC 4x4 16/4x3 12 Chnl T1/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
DS21FF44 功能描述:网络控制器与处理器 IC 4x4 16/4x3 12 Chnl E1/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
DS21FF44N 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