参数资料
型号: DS21Q43-ATN
厂商: Maxim Integrated Products
文件页数: 23/60页
文件大小: 0K
描述: IC FRAMER E1 QUAD 5V 128-TQFP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 72
控制器类型: E1 调帧器
接口: 并行/串行
电源电压: 4.5 V ~ 5.5 V
电流 - 电源: 32mA
工作温度: -40°C ~ 85°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
DS21Q43A
3 of 60
DS21Q43A BLOCK DIAGRAM Figure 1-1
READER’S NOTE
This data sheet assumes a particular nomenclature of the E1 operating environment. There are 32 8-bit
timeslots in an E1 system which are numbered 0 to 31. Timeslot 0 is transmitted first and received first.
These 32 timeslots are also referred to as channels with a numbering scheme of 1 to 32. Timeslot 0 is
identical to channel 1, timeslot 1 is identical to channel 2, and so on. Each timeslot (or channel) is made
up of 8 bits which are numbered 1 to 8. Bit number 1 is the MSB and is transmitted first. Bit number 8 is
the LSB and is transmitted last. Throughout this data sheet, the following abbreviations will be used:
FAS
Frame Alignment
CRC4
Cyclical Redundancy Check
CAS
Channel Associated
CCS
Common Channel Signaling
Signaling
MF
Multiframe
Sa
Additional bits
Si
International bits
E-bit
CRC4 Error bits
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