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| 型号： | DS3112+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 102/133页 |
| 文件大小： | 0K |
| 描述： | IC MUX TEMPE T3/E3 256-BGA |
| 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 |
| 产品目录页面： | 1419 (CN2011-ZH PDF) |
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DS3112
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7
T1/E1 LOOPBACK AND DROP AND INSERT FUNCTIONALITY
On the T1 and E1 ports, the DS3112 has loopback capability in both directions. There is a per-port line
loopback that loops the receive side back to the transmit side and a per-port diagnostic loopback that
loops the transmit side back to the receive side. In addition, the device can detect the T1 line loopback
command as well as generate it. Also, the DS3112 has two drop and insert ports that allow any two of the
28 T1 or 16/21 E1 data streams to be dropped or inserted from two auxiliary ports. All these functions are
described below.
7.1 T1/E1 Line Loopback
Each of the 28 T1 or 16/21 E1 receive demultiplexed ports can be looped back to the transmit side. This
loopback is called a line loopback and is shown in the block diagrams in Section 1. When the line
loopback is invoked, the normal transmit data input at the LTCLK and LTDAT inputs is ignored and
replaced with the data from the associated receive port. The host invokes the line loopback via the
T1E1LLB1 and T1E1LLB2 control registers (Section 7.5).
7.2 T1/E1 Diagnostic Loopback
Each of the 28 T1 or 16/21 E1 transmit multiplexed ports can be looped back to the receive side. This
loopback is called a diagnostic loopback and is shown in the block diagrams in Section 1. When the
diagnostic loopback is invoked, the normal receive data output at the LRCLK and LRDAT outputs is
replaced with the data from the associated transmit port. The host invokes the diagnostic loopback via the
T1E1DLB1 and T1E1DLB2 control registers (Section 7.5).
7.3 T1 Line Loopback Command
M13 systems have the ability to request that a T1 line be looped back, which is achieved by inverting the
C3 bit. See Section 14.2 for details on M13 formats and operation. The DS3112 will detect when the C3
bit has been inverted and will indicate which T1 line is being requested to be placed into line loopback
via the T1LBSR1 and T1LBSR2 registers (Section 7.6). When the host detects that a T1 line is being
requested to be placed into loopback, it should set the appropriate control bit in either the T1E1LLB1 or
T1E1LLB2 register. The DS3112 can also generate a T1 line loopback command by inverting the C3 bit,
which is accomplished via the T1LBCR1 and L1LBCR2 registers (Section 7.5). Note that when E3 or
G.747 mode is enabled, the T1 line loopback command functionality is not applicable.
7.4 T1/E1 Drop and Insert
The DS3112 has the ability to drop any of the 28 T1 or 16/21 E1 receive channels to either one of two
drop ports. Drop Port A and Drop Port B consist of the outputs LRCLKA/LRDATA and
LRCLKB/LRDATB, respectively. See the block diagrams in Section 1 for more details. The host can
determine which T1/E1 port should be dropped via the T1E1SDP control register (Section 7.7). When a
T1/E1 channel is dropped to either Drop Port A or B, the demultiplexed data is still output at the normal
LRCLK and LRDAT outputs. On the transmit side, there are a complimentary pair of Insert Ports that are
controlled via the T1E1SIP control register (Section 7.7). When enabled, the inserted port data and clock
(LTDATA/LTDATB and LTCLKA/LTCLKB, respectively) replace the data that would normally be
multiplexed in at LTDAT and LTCLK inputs.
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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 |
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