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参数资料
| 型号： | DS26324DK |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 49/120页 |
| 文件大小： | 0K |
| 描述： | KIT DESIGN FOR G549DS26324 |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 1 |
| 主要目的： | 电信，线路接口单元（LIU） |
| 已用 IC / 零件： | G549DS26324 |
| 已供物品： | 板，线缆，电源 |
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DS26324 3.3V, 16-Channel, E1/T1/J1 Short-Haul Line Interface Unit
34 of 120
5.9
BERT
There are two bit error-rate testers available on the DS26324. One BERT can be mapped into LIUs 1–8 and the
other into LIUs 9–16 via the BTCR registers. The two BERTs operate independently of each other.
Each BERT transmitter, by default, replaces data from TPOS and TNEG; each BERT receiver, by default, samples
recovered data from RTIP and RRING.
The BERT can be enabled to replace data received on RTIP and RRING via the BERTDIR bit in the BERT and
G.772 Monitoring Control Register (BGMC). In this mode, the SRMS bit determines whether data comes out single-
rail or dual-rail. BERT data can be sourced using the recovered clock, MCLK, or TCLK. In this mode of operation,
the BERT receiver samples data on TPOS and TNEG on the falling edge of TCLK. This function is useful for
testing the digital side of the LIU. If TCLK is selected as a source for this mode, the input TCLK will control the
BERT transmitter and receiver. If the recovered clock or MCLK is selected, the RCLK output needs to drive the
TCLK input in order for the BERT receiver to sync to the data.
5.9.1
General Description
The BERT is a software-programmable test pattern generator and monitor capable of meeting most error
performance requirements for digital transmission equipment. It will generate and synchronize to pseudorandom
patterns with a generation polynomial of the form x
n + xy + 1, where n and y can take on values from 1 to 32 and
repetitive patterns of any length up to 32 bits.
The transmit direction generates the programmable test pattern, and inserts the test pattern payload into the data
stream.
The receive direction extracts the test pattern payload from the receive data stream, and monitors the test pattern
payload for the programmable test pattern.
5.9.1.1
BERT Features
Programmable PRBS Pattern. The pseudorandom bit sequence (PRBS) polynomial (x
n + xy + 1) and
seed are programmable (length n = 1 to 32, tap y = 1 to n – 1, and seed = 0 to 2
n – 1).
Programmable Repetitive Pattern. The repetitive pattern length and pattern are programmable (the
length n = 1 to 32 and pattern = 0 to 2
n – 1).
24-Bit Error Count and 32-Bit Bit Count Registers
Programmable Bit-Error Insertion. Errors can be inserted individually, on a pin transition, or at a specific
rate. The rate 1/10
n is programmable (n = 1 to 7).
Pattern Synchronization at a 10
-3 BER. Pattern synchronization is achieved even in the presence of a
random bit error rate (BER) of 10
-3.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS26324G | 功能描述:电信集成电路 3.3V E1/T1/J1 16Ch Short Haul Octal LIU RoHS:否 制造商:STMicroelectronics 类型:Telecom IC - Various 工作电源电压:4.75 V to 5.25 V 电源电流: 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:PQFP-100 封装:Tray |
| DS26324G+ | 功能描述:电信集成电路 3.3V E1/T1/J1 16Ch Short Haul Octal LIU RoHS:否 制造商:STMicroelectronics 类型:Telecom IC - Various 工作电源电压:4.75 V to 5.25 V 电源电流: 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:PQFP-100 封装:Tray |
| DS26324GA2 | 功能描述:电信集成电路 RoHS:否 制造商:STMicroelectronics 类型:Telecom IC - Various 工作电源电压:4.75 V to 5.25 V 电源电流: 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:PQFP-100 封装:Tray |
| DS26324GA2+ | 功能描述:电信集成电路 RoHS:否 制造商:STMicroelectronics 类型:Telecom IC - Various 工作电源电压:4.75 V to 5.25 V 电源电流: 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:PQFP-100 封装:Tray |
| DS26324GA2+W | 功能描述:电信集成电路 RoHS:否 制造商:STMicroelectronics 类型:Telecom IC - Various 工作电源电压:4.75 V to 5.25 V 电源电流: 工作温度范围:- 40 C to + 85 C 安装风格:SMD/SMT 封装 / 箱体:PQFP-100 封装:Tray |
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