参数资料
| 型号： | DS21349Q+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 9/35页 |
| 文件大小： | 0K |
| 描述： | IC LIU T1/J1 3.3V 28-PLCC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 37 |
| 类型： | 线路接口装置（LIU） |
| 电源电压： | 3.135 V ~ 3.465 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-LCC（J 形引线） |
| 供应商设备封装： | 28-PLCC（11.51x11.51） |
| 包装： | 管件 |
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DS21349
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6. RECEIVER
A 1:1 transformer provides the interface between the twisted pair and receiver inputs RTIP and RRING.
Recovered data is output at RPOS and RNEG (or RDATA in NRZ mode), and the recovered clock is
output at RCLK. See Section 12 for receiver timing specifications.
6.1
Receive Equalizer
The receiver can apply up to 36dB of gain. Control of the equalizer is accomplished by the L0 through L3
control inputs. These control signals are detailed in Table 4-E and determine the maximum gain that is
applied. In software mode, these control signals are in Control Register 1; in hardware mode, these
control inputs are the L0 through L3 pins. With L0 low, up to 36dB of gain can be applied; when L0 is
high, 26dB can be applied in the gain limit to provide better noise immunity in shorter loop operations.
6.2
Receive Data Recovery
The clock and data recovery engine provides input jitter tolerance that exceeds the requirements of AT&T
62411. Inbound signal is filtered, equalized, and over-sampled 16 times. Then it is applied to the B8ZS
decoder if enabled.
6.3
Receive Digital-Data Interface
Recovered data is routed to the RCL monitor. In software mode, data also goes through the alarm
indication signal (AIS) monitor. The jitter attenuator can be enabled or disabled in the receive path or
transmit path. Received data can be routed to the B8ZS decoder or bypassed. Finally, the device can send
the digital data to the framer as either bipolar or NRZ data.
6.4
Receive Monitor Mode
The receive equalizer can be used in monitor-mode applications. Monitor-mode applications require
20dB of resistive attenuation of the signal, plus an allowance for cable attenuation (less than 20dB). In
software mode, setting CR3.4 (EQZMON20) enables the device to operate in monitor-mode applications
that require 20dB of resistive attenuation of the signal. Setting CR3.3 (EQZMON26) enables the device
to operate in monitor-mode applications that require 26dB of resistve attenuation. Setting both CR3.3 and
CR3.4 enables the device to operate in monitor-mode applications that require 32dB of resistive
attenuation. The monitor mode feature is not available in hardware mode.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS21349Q/T&R+ | 制造商:Maxim Integrated Products 功能描述:FRAMER J1/T1 3.3V 28PLCC - Tape and Reel |
| DS21349Q/T&R | 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 |
| DS21349Q+ | 功能描述:网络控制器与处理器 IC 3.3V E1/T1/J1 Line Interface 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 |
| DS21349Q+T&R | 制造商:Maxim Integrated Products 功能描述:FRAMER J1/T1 3.3V 28PLCC - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC LIU T1/J1 3.3V 28-PLCC |
| DS21349Q+T&R | 功能描述:网络控制器与处理器 IC 3.3V E1/T1/J1 Line Interface 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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