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| 型号： | DS21448DK |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 18/60页 |
| 文件大小： | 0K |
| 描述： | KIT DESIGN LIU DS21448 T1/J1/E1 |
| 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： | DS21448 |
| 已供物品： | 板，子卡，CD |
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DS21448 3.3V T1/E1/J1 Quad Line Interface
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Table 5-A. Received Alarm Criteria
ALARM
E1/T1
SET CRITERIA
CLEAR CRITERIA
RUA1
E1
Fewer than two 0s in two frames (512 bits)
More than two 0s in two frames (512 bits)
RUA1
T1
Over a 3ms window, five or fewer 0s are
received.
Over a 3ms window, six or more 0s are
received.
RCL
(Note 1)
E1
255 (or 2048) consecutive 0s received
(G.775) (Note 2)
In 255-bit times, at least 32 1s are
received.
RCL
(Note 1)
T1
192 (or 1544) consecutive 0s are received
(Note 2)
14 or more 1s out of 112 possible bit
positions are received, starting with the
first 1 received.
Note 1: RCL is also known as a loss of signal (LOS) or Red Alarm in T1.
Note 2: See CCR1.5 for details.
IMR (07H): Interrupt Mask Register
(MSB)
(LSB)
LUP
LDN
LOTC
RUA1
RCL
TCLE
TOCD
PRBSD
NAME
POSITION
FUNCTION
LUP
IMR.7
Loop-Up Code Detected
0 = interrupt masked
1 = interrupt enabled
LDN
IMR.6
Loop-Down Code Detected
0 = interrupt masked
1 = interrupt enabled
LOTC
IMR.5
Loss-of-Transmit Clock
0 = interrupt masked
1 = interrupt enabled
RUA1
IMR.4
Receive Unframed All Ones
0 = interrupt masked
1 = interrupt enabled
RCL
IMR.3
Receive Carrier Loss
0 = interrupt masked
1 = interrupt enabled
TCLE
IMR.2
Transmit Current-Limiter Exceeded
0 = interrupt masked
1 = interrupt enabled
TOCD
IMR.1
Transmit Open-Circuit Detect
0 = interrupt masked
1 = interrupt enabled
PRBSD
IMR.0
PRBS Detection
0 = interrupt masked
1 = interrupt enabled
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相关代理商/技术参数 |
参数描述 |
|---|---|
| DS21448G+ | 功能描述:网络控制器与处理器 IC 3.3V E1/T1/J1 Quad Interface 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 |
| DS21448GN+ | 功能描述:网络控制器与处理器 IC 3.3V E1/T1/J1 Quad Interface 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 |
| DS21448L | 功能描述:网络控制器与处理器 IC 3.3V E1/T1/J1 Quad Interface 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 |
| DS21448L+ | 功能描述:网络控制器与处理器 IC 3.3V E1/T1/J1 Quad Interface 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 |
| DS21448L+W | 功能描述:网络控制器与处理器 IC 3.3V E1/T1/J1 Quad Interface 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 |
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