参数资料
型号: DS3112
厂商: DALLAS SEMICONDUCTOR
元件分类: Digital Transmission Controller
英文描述: DATACOM, FRAMER, PBGA256
封装: 27 X 27 MM, PLASTIC, BGA-256
文件页数: 39/134页
文件大小: 900K
代理商: DS3112
DS3112
133 of 134
E3 Frame Structure Figure 14.3B
Set 1
Bit 1
Bit 384
FAS (1111010000)
RAI
Sn
b11
b21
b31
b41
b12
...bits from the tributaries...
Set 2
Bit 1
Bit 384
c11
c21
c31
c41
...bits from the tributaries...
Set 3
Bit 1
Bit 384
c12
c22
c32
c42
...bits from the tributaries...
Set 4
Bit 1
Bit 384
c12
c22
c32
c42
s1
s2
s3
s4
...bits from the tributaries...
Notes:
1.
bit 1 of set 1 is transmitted first
2.
bji
tributary bits
j = tributary number
i = bit number
3.
cji
justification control bits
j = tributary number
i = control stuffing bit number
4.
sj
stuffing bits
j = tributary number
14.4 G.747 BASICS
G.747 multiplexing is a mixture of T3 and E1. It is the process of merging 21 E1 lines into a single T3
line. This is a two step process. 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 6.312 Mbps 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 14.2 for details on the T2 to T3 multiplexing scheme (i.e. M23) and the T3 framing
structure.
G.747 Carrier Rates Table 14.4A
T or E Carrier Level
Nominal Data Rate
E1
2.048 Mbps
T2
6.312 Mbps
T3
44.736 Mbps
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相关代理商/技术参数
参数描述
DS3112+ 功能描述:网络控制器与处理器 IC TEMPE T3/E3 MUX FRMR & M13/E13/G.747 MUX 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
DS3112+W 功能描述:网络控制器与处理器 IC TEMPE T3/E3 MUX FRMR & M13/E13/G.747 MUX 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
DS3112D1 功能描述:网络控制器与处理器 IC TEMPE T3/E3 MUX FRMR & M13/E13/G.747 MUX 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
DS3112D1+ 功能描述:网络控制器与处理器 IC TEMPE T3/E3 MUX FRMR & M13/E13/G.747 MUX 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
DS3112DK 功能描述:网络开发工具 DS3112 Dev Kit RoHS:否 制造商:Rabbit Semiconductor 产品:Development Kits 类型:Ethernet to Wi-Fi Bridges 工具用于评估:RCM6600W 数据速率:20 Mbps, 40 Mbps 接口类型:802.11 b/g, Ethernet 工作电源电压:3.3 V