參數(shù)資料
型號： DS21349Q+
廠商： Maxim Integrated Products
文件頁數(shù)： 9/35頁
文件大?。?/td> 0K
描述： IC LIU T1/J1 3.3V 28-PLCC
產(chǎn)品培訓模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標準包裝： 37
類型： 線路接口裝置（LIU）
電源電壓： 3.135 V ~ 3.465 V
安裝類型： 表面貼裝
封裝/外殼： 28-LCC（J 形引線）
供應(yīng)商設(shè)備封裝： 28-PLCC（11.51x11.51）
包裝： 管件
DS21349
17 of 35
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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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)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:網(wǎng)絡(luò)控制器與處理器 IC RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
DS21349Q+ 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 3.3V E1/T1/J1 Line Interface RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝: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:網(wǎng)絡(luò)控制器與處理器 IC 3.3V E1/T1/J1 Line Interface RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
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