参数资料
型号: DS3112+W
厂商: Maxim Integrated Products
文件页数: 37/133页
文件大小: 0K
描述: IC MUX T3/E3 3.3V 256-PBGA
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 40
控制器类型: 调帧器,多路复用器
接口: 并行/串行
电源电压: 3.135 V ~ 3.465 V
电流 - 电源: 150mA
工作温度: 0°C ~ 70°C
安装类型: 表面贴装
封装/外壳: 256-LBGA
供应商设备封装: 256-PBGA(27x27)
包装: 管件
DS3112
131 of 133
14.11G.747 Basics
G.747 multiplexing is a mixture of T3 and E1. It is a two-step process of merging 21 E1 lines into a
single T3 line. First, three of the E1 lines are merged into a single T2 rate and then seven T2 rates are
merged to form the T3 just like the normal T2 to T3 multiplexing scheme. Once the three E1 lines have
been multiplexed together, the resultant 6.312Mbps data stream is treated just like a T2 data stream that
contains four T1 lines. We will only discuss the G.747 multiplexing scheme in this section. See Section
14.6 for details on the T2 to T3 multiplexing scheme (e.g., M23) and the T3 framing structure.
Table 14-6. G.747 Carrier Rates
T OR E
CARRIER
LEVEL
NOMINAL DATA
RATE (Mbps)
E1
2.048
T2
6.312
T3
44.736
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