参数资料
| 型号： | XRT85L61IG |
| 厂商： | Exar Corporation |
| 文件页数： | 1/19页 |
| 文件大小： | 0K |
| 描述： | IC BITS CLOCK EXTRACTOR 28TSSOP |
| 标准包装： | 50 |
| 功能： | BITS 时钟提取器 |
| 接口： | E1，T1 |
| 电路数： | 1 |
| 电源电压： | 3.14 V ~ 3.47 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 28-TSSOP（0.173"，4.40mm 宽） |
| 供应商设备封装： | 28-TSSOP |
| 包装： | 管件 |
| 包括： | 无晶数字式抖动衰减器 |
Exar Corporation 48720 Kato Road, Fremont CA, 94538 (510) 668-7000 FAX (510) 668-7017 www.exar.com
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XRT85L61
BITS (BUILDING INTEGRATED TIMING SUPPLY) CLOCK EXTRACTOR
OCTOBER 2004
REV. 1.0.2
GENERAL DESCRIPTION
The XRT85L61 is an integrated E1, T1, 64KHz
Centralized Clock interface for T1 (1.544Mbps) 100
,
E1 (2.048Mbps) 75
or 120 applications.
The XRT85L61 extracts either 2048kHz or 1544 kHz
clock signals from an E1 (2.048 MHz), T1 (1.544
Mhz) inputs respectively or 64 KHz, 8kHz or 400 Hz
clock signals from the 64kHz reference clock input.
The XRT85L61 includes an on-chip crystal-less jitter
attenuator with 32 bit FIFO that can either be enabled
or disabled.
FEATURES
Fully integrated single chip solution for E1,T1 or 64
kHz clock synchronization applications.
Extracts 2048 kHz, 1544 kHz clock and data
components
Extracts 64 KHz and 8 kHz, 400 Hz clock
information
Line Code Violation alarms
On-chip digital clock recovery circuit
Supports 75 and 120 (E1), 100 (T1)
applications.
Crystal-less digital jitter attenuator with 32-bit FIFO
that can either be enabled or disabled
Receive loss of signal (RLOS) output
Meets Telcordia GR-1244-CORE Section 3.4.1 R3-
27 specification
Meets or exceeds T1 and E1 specifications in ITU
G.703, G.775
Single +3.3V Supply Operation
Logic inputs accept either 3.3 V or 5 V levels
28 pin TSSOP package
APPLICATIONS
Universal Clock Synchronization for G.703 Telecom
Formats
T1/E1 Line Receiver with Clock and Data Recovery
DSLAM
FIGURE 1. BLOCK DIAGRAM OF THE XRT85L61
Master Clock
Generator
Rx
Equalizer
MCLK1
(1.544 MHz for T1)
MCLK2
(2.048 MHz for E1
or 64 kbps)
Reference Inputs
RTIP
RRING
Line Side
Peak Detector
and Slicer
Clock and
Data
Recovery
Jitter
Attenuator
Clock
Extractor
Line code
and clock
violation
Detector
RPOS
RNEG
RCLK
(64kHz,1544kHz or 2048kHz)
8 kHz (for 64 kbps)
400 Hz (for 64 kbps)
RCLK_LCV/AIS
8 kHz_LCV/BPV
400 Hz_LCV
LOS
Detector
RLOS
Mode Select
T1, E1 or 64 kbps
S1
S2
S3
(T1 or E1 or 64 kbps input)
JAEN
DATAMUT
DATA_INV
RCLKINV
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相关代理商/技术参数 |
参数描述 |
|---|---|
| XRT85L61IG-F | 功能描述:时钟合成器/抖动清除器 BITS -.5V-6V temp -45 to 85C RoHS:否 制造商:Skyworks Solutions, Inc. 输出端数量: 输出电平: 最大输出频率: 输入电平: 最大输入频率:6.1 GHz 电源电压-最大:3.3 V 电源电压-最小:2.7 V 封装 / 箱体:TSSOP-28 封装:Reel |
| XRT85L61IG-F | 制造商:Exar Corporation 功能描述:BITS Clock Extractor IC |
| XRT85L61IGTR | 功能描述:时钟合成器/抖动清除器 T1/E1/64KHZ RoHS:否 制造商:Skyworks Solutions, Inc. 输出端数量: 输出电平: 最大输出频率: 输入电平: 最大输入频率:6.1 GHz 电源电压-最大:3.3 V 电源电压-最小:2.7 V 封装 / 箱体:TSSOP-28 封装:Reel |
| XRT85L61IGTR-F | 功能描述:时钟合成器/抖动清除器 T1/E1/64KHZ RoHS:否 制造商:Skyworks Solutions, Inc. 输出端数量: 输出电平: 最大输出频率: 输入电平: 最大输入频率:6.1 GHz 电源电压-最大:3.3 V 电源电压-最小:2.7 V 封装 / 箱体:TSSOP-28 封装:Reel |
| XRT86L30 | 制造商:EXAR 制造商全称:EXAR 功能描述:SINGLE T1/E1/J1 FRAMER/LIU COMBO |
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