参数资料
型号: DS2196LN+
厂商: Maxim Integrated Products
文件页数: 23/157页
文件大小: 0K
描述: IC FRAMER DUAL T1 LIU 100-LQFP
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 90
控制器类型: T1 调帧器
接口: 并行/串行
电源电压: 3.135 V ~ 3.465 V
电流 - 电源: 85mA
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 100-LQFP
供应商设备封装: 100-LQFP(14x14)
包装: 托盘
DS2196
119 of 157
Normally, the clock that is output at the RCLKLO pin is the recovered clock from the T1 AMI/B8ZS
waveform presented at the RTIP and RRING inputs. When no AMI signal is present at RTIP and
RRING, a Receive Carrier Loss (LRCL) condition will occur and the RCLKLO will be sourced from the
clock applied at the MCLK pin. If the jitter attenuator is either placed in the transmit path or is disabled,
the RCLKLO output can exhibit slightly shorter high cycles of the clock. This is due to the highly over
sampled digital clock recovery circuitry. If the jitter attenuator is placed in the receive path (as is the case
in most applications), the jitter attenuator restores the RCLK to being close to 50% duty cycle. Please see
the Receive AC Timing Characteristics in Section 22 for more details.
19.2TRANSMIT WAVESHAPING AND LINE DRIVING
The DS2196 uses a set of laser–trimmed delay lines along with a precision Digital–to–Analog Converter
(DAC) to create the waveforms that are transmitted onto the T1 line. The waveforms created by the
DS2196 meet the latest ANSI, AT&T, and ITU specifications. See Figure 19–3. The user will select
which waveform is to be generated by properly programming the LBOS3/LBOS2/LBOS1/LBOS0 bits in
the Line Interface Control Register (LICR).
The DS2196 can set up in a number of various
configurations depending on the application. See Table 19–1 and Figure 19–1.
Table 19-1: LINE BUILD OUT SELECT IN LICR
LBO
S3
LBO
S2
LBO
S1
LBO
S0
LINE BUILD OUT
APPLICATION
0
0 to 133 feet/
DSX–1/0dB CSU
0
1
133 feet to 266
DSX–1
0
1
0
266 feet to 399
DSX–1
0
1
399 feet to 533
DSX–1
0
1
0
533 feet to 655
DSX–1
0
1
0
1
–7.5 dB
CSU
0
1
0
–15 dB
CSU
0
1
–22.5 dB
CSU
1
0
Square Wave Output
Custom Wave shape
1
0
1
Open Drain Output Driver
Enable
Custom Wave shape
NOTE:
LBOS3 is located at CCR7A.0.
Due to the nature of the design of the transmitter in the DS2196, very little jitter (less then 0.005 UIpp
broadband from 10 Hz to 100 kHz) is added to the jitter present on TCLKLI. Also, the waveforms that
they create are independent of the duty cycle of TCLKLI. The transmitter in the DS2196 couples to the
T1 transmit twisted pair via a 1:2 step up transformer for the as shown in Figure 19–1. In order for the
devices to create the proper waveforms, this transformer used must meet the specifications listed in Table
19–2.
相关PDF资料
PDF描述
DS21FF42 IC FRAMER T1 4X4 16CH 300-BGA
DS21FF44 IC FRAMER E1 4X4 16CH 300-BGA
DS21FT44N+ IC FRAMER 4X4 16CH 300-BGA
DS21Q352B IC TXRX QUAD T1/E1 3.3V 256-BGA
DS21Q41BT IC FRAMER T1 QUAD 128-TQFP
相关代理商/技术参数
参数描述
DS2196LN+ 功能描述:网络控制器与处理器 IC T1 Dual Framer LIU RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流(最大值):595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray
DS219T 功能描述:烙铁 DESOLDERING HEAD RoHS:否 制造商:Weller 产品:Soldering Stations 类型:Digital, Iron, Stand, Cleaner 瓦特:50 W 最大温度:+ 850 F 电缆类型:US Cord Included
DS21E352 功能描述:网络控制器与处理器 IC RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流(最大值):595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray
DS21E352N 功能描述:网络控制器与处理器 IC RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流(最大值):595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray
DS21E354 功能描述:网络控制器与处理器 IC RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流(最大值):595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray