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参数资料
| 型号： | DS3112N |
| 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： | 38/134页 |
| 文件大小： | 900K |
| 代理商： | DS3112N |
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DS3112
132 of 134
positions. When a majority of the three Justification Control Bits from a particular tributary is set to zero,
the Stuffing Bit position will be used for tributary data. When the Justification Control Bits are majority
decoded to be one, the Stuffing Bit will not be used for tributary data.
E3 Framing Structure and E23 Multiplexing
The E3 frame structure and the E23 multiplexing scheme is almost identical to the E2 framing structure
and the E12 multiplexing scheme. The E3 frame structure is made up of four 384 bit Sets. See
Figure 14.3B. The four Sets are transmitted one after another (...Set1/Set2/Set3/Set4/Set1...) to make up
the complete E3 frame structure. The Frame Alignment Signal (FAS) is placed in the first 10 bits of Set 1
and is followed by the Remote Alarm Indication (RAI) bit and a National Bit (Sn). The remainder of Set
1 is filled with bits from the four tributaries. The four tributaries are bit interleaved starting with a bit
from Tributary 1 immediately after the Sn bit. The first four bits of Sets 2, 3, and 4 are the Justification
Control Bits. Bits 5 to 8 of Set 4 are the Stuffing Bits. The Justification Control bits control when data
will be stuffed into the Stuffing Bit positions. When a majority of the three Justification Control Bits
from a particular tributary is set to zero, the Stuffing Bit position will be used for tributary data. When
the Justification Control Bits are majority decoded to be one, the Stuffing Bit will not be used for
tributary data.
E2 Frame Structure Figure 14.3A
Set 1
Bit 1
Bit 212
FAS (1111010000) RAI
Sn
b11
b21
b31
b41
b12
...bits from the tributaries...
Set 2
Bit 1
Bit 212
c11
c21
c31
c41
...bits from the tributaries...
Set 3
Bit 1
Bit 212
c12
c22
c32
c42
...bits from the tributaries...
Set 4
Bit 1
Bit 212
c13
c23
c33
c43
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 bit number
4.
sj
stuffing bits
j = tributary number
相关PDF资料 |
PDF描述 |
|---|---|
| DS3112 | DATACOM, FRAMER, PBGA256 |
| DS3131 | SPECIALTY TELECOM CIRCUIT, PBGA256 |
| DS3134 | DATACOM, FRAMER, PBGA256 |
| DS3150QN | DATACOM, PCM TRANSCEIVER, PQCC28 |
| DS3150Q | DATACOM, PCM TRANSCEIVER, PQCC28 |
相关代理商/技术参数 |
参数描述 |
|---|---|
| DS3112N+ | 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 |
| DS3112N+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 |
| DS3112NC1 | 制造商:Maxim Integrated Products 功能描述:T3 E3 MULTIPLEXER, 3.3V T3/E3 FRAMER AND M13/E13/G.747 MUX - Rail/Tube |
| DS3112ND1E | 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述: |
| DS3112RD | 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 |
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