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| 型号： | DS26303L-75+A3 |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 53/101页 |
| 文件大小： | 0K |
| 描述： | IC LIU E1/T1/J1 3.3V 144-ELQFP |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 类型： | 线路接口装置（LIU） |
| 驱动器/接收器数： | 8/8 |
| 规程： | T1/E1/J1 |
| 电源电压： | 3.135 V ~ 3.465 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 144-LQFP 裸露焊盘 |
| 供应商设备封装： | 144-LQFP 裸露焊盘 |
| 包装： | 托盘 |
| 其它名称： | 90-26303+7A3 |
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DS26303: 3.3V, T1/E1/J1, Short-Haul, Octal Line Interface Unit
55 of 101
6.3
Transmitter
NRZ data arrives on TPOSn and TNEGn on the transmit system side. The TPOSn and TNEGn data is sampled on
the falling edge of TCLKn (Figure 10-12).
The data is encoded with HDB3 or B8ZS or AMI encoding when single-rail mode is selected (only TDATn as the
data source). When in single-rail mode only, BPV errors can be inserted for test purposes by register BEIR.
Encoded data is expected when dual-rail mode is selected. The encoded data passes through a jitter attenuator if it
is enabled for the transmit path. A digital sequencer and DAC generate transmit waveforms compliant with T1.102
and G.703 pulse masks.
A line driver drives an internal matched-impedance circuit for provision of 100
Ω, 110Ω, 120Ω, and 75Ω termination.
The DS26303 drivers have short-circuit driver-fail-monitor detection. There is an OE pin that can high-Z the
transmitter outputs for protection switching. The individual transmitters can also be placed in high impedance by
register OEB. The DS26303 also has functionality for powering down the transmitters individually. The registers
that control the transmitter operation are shown in Table 6-3.
Table 6-1. Telecommunications Specification Compliance for DS26303 Transmitters
TRANSMITTER FUNCTION
TELECOMMUNICATIONS COMPLIANCE
AMI Coding, B8ZS Substitution, DS1 Electrical
Interface
ANSI T1.102
T1 Telecom Pulse Mask Compliance
ANSI T1.403
T1 Telecom Pulse Mask Compliance
ANSI T1.102
Transmit Electrical Characteristics for E1
Transmission and Return Loss Compliance
ITU-T G.703
Table 6-2. Registers Related to Control of DS26303 Transmitters
REGISTER
NAME
FUNCTION
Transmit All-Ones Enable
Transmit All-Ones Enable.
Driver Fault Monitor Status
Driver Fault Status.
Driver Fault Monitor Interrupt Enable
Driver Fault Status Interrupt Mask.
Driver Fault Monitor Interrupt Status
Driver Fault Interrupt Status.
Global Configuration
Selection of the jitter attenuator in the transmit path, receive
path, or not used and code for B8ZS or HDB3 substitution.
Template Select Transmitter
The transmitter that the template select applies to.
Template Select
The TS2 to TS0 bits for selection of the templates for
transmitter and match impedance for the receiver.
Output Enable Configuration
This register can be used to place the transmitter outputs in
high-impedance mode.
Master Clock Selection
Selects the MCLK frequency used for transmit and receive.
Single-Rail Mode Select
This register can be used to select between single-rail and
dual-rail mode.
Line Code Selection
The individual LIU line codes can be selected to overwrite
the global setting.
Transmit Power-Down
Individual transmitters can be powered down.
Individual Short-Circuit-Protection
Disable
This register allows the individual transmitters short-circuit
protection disable.
BERT Control
This register is used for sending different BERT patterns for
the individual transmitters.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS26303LN-120 | 功能描述:电信线路管理 IC RoHS:否 制造商:STMicroelectronics 产品:PHY 接口类型:UART 电源电压-最大:18 V 电源电压-最小:8 V 电源电流:30 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:VFQFPN-48 封装:Tray |
| DS26303LN-120+ | 功能描述:电信线路管理 IC 3.3V E1/T1/J1 Short Haul Octal LIU RoHS:否 制造商:STMicroelectronics 产品:PHY 接口类型:UART 电源电压-最大:18 V 电源电压-最小:8 V 电源电流:30 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:VFQFPN-48 封装:Tray |
| DS26303LN-120+A3 | 功能描述:电信线路管理 IC 3.3V E1/T1/J1 Short Haul Octal LIU RoHS:否 制造商:STMicroelectronics 产品:PHY 接口类型:UART 电源电压-最大:18 V 电源电压-最小:8 V 电源电流:30 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:VFQFPN-48 封装:Tray |
| DS26303LN-120A3 | 功能描述:电信线路管理 IC 3.3V E1/T1/J1 Short Haul Octal LIU RoHS:否 制造商:STMicroelectronics 产品:PHY 接口类型:UART 电源电压-最大:18 V 电源电压-最小:8 V 电源电流:30 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:VFQFPN-48 封装:Tray |
| DS26303LN-75 | 功能描述:电信线路管理 IC 3.3V E1/T1/J1 Short Haul Octal LIU RoHS:否 制造商:STMicroelectronics 产品:PHY 接口类型:UART 电源电压-最大:18 V 电源电压-最小:8 V 电源电流:30 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:VFQFPN-48 封装:Tray |
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