參數(shù)資料
型號： DS21349Q+
廠商： Maxim Integrated Products
文件頁數(shù)： 8/35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）
供應商設備封裝： 28-PLCC（11.51x11.51）
包裝： 管件
DS21349
16 of 35
5. TRANSMITTER
5.1
Transmit Digital Data Interface
Data is clocked into the device at the TCLK rate. In bipolar mode, TPOS and TNEG are the data inputs;
in NRZ mode, TDATA is the data input. Input data can pass through either the jitter attenuator or the
B8ZS encoder or both. In software mode, setting ENCENB enables B8ZS encoding. In hardware mode,
floating the MODE1 pin enables B8ZS encoding. With B8ZS encoding enabled, the L0 through L3 inputs
determine the coding and is listed in Table 4-E. TCLK supplies input synchronization. See Section 12 for
the TCLK and MCLK timing requirements.
5.2
Transmit Monitoring
In software mode, the DFMO bit in the status register is set when an open circuit in the transmitter path is
detected. A transition on this bit can provide an interrupt, and a transition sets the DFMO bit in the
transition status register. Setting CDFMO in the interrupt mask register, leaving a 1 in that bit location
masks the interrupt.
5.3
Transmit Idle Mode
Transmit idle mode allows multiple transceivers to be connected to a single line for redundant
applications. When TCLK is not present, transmit idle mode becomes active, and TTIP and TRING
change to high-impedance state. Remote loopback, dual loopback, TAIS, or detection of network loop-up
code in the receive direction temporarily disable the high-impedance state.
5.4
Transmit Pulse Shape
As shown in Table 4-E, line build-out control inputs (L0 through L3) determine the transmit pulse shape.
In software mode, these control inputs are located in control register 1; in hardware mode, these control
inputs are the L0 through L3 pins.
Shaped pulses meeting the various T1, DS1, and DSX-1 specifications are applied to the AMI line driver
for transmission onto the line at TTIP and TRING. The transceiver produces DSX-1 pulses for short-haul
T1 applications (settings from 0dB to 6dB of cable) and DS1 pulses for long-haul T1 applications
(settings from 0dB to -22.5dB). Refer to Table 4-E for pulse mask specifications.
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相關代理商/技術參數(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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