參數資料
型號： DS21552L
英文描述： 3.3V DS21352 and 5V DS21552 T1 Single-Chip Transceivers
中文描述： 3.3 DS21352及5V DS21552 T1單芯片收發(fā)器
文件頁數： 93/137頁
文件大小： 1094K
代理商： DS21552L
DS21352/DS21552
93 of 137
16.5 RECEIVE MONITOR MODE
When connecting to a monitor port a large resistive loss is incurred due to the voltage divider between the
T1 line termination resistors (Rt) and the monitor port isolation resistors (Rm) as shown below. The Rm
resistors are typically 470 ohm. This, along with the 100 ohm termination (Rt), produces 20dB of loss.
The receiver of the DS21352/552 can provide gain to overcome the resistive loss of a monitor connection.
This is a purely resistive loss/gain and should not be confused with the cable loss characteristics of a T1
transmission line. Via the TEST2 register as shown in the table below, the receiver can be programmed
to provide both 12dB and 20dB of gain.
Figure 16-8 TYPICAL MONITOR PORT APPLICATION
Table 16-5 RECEIVE MONITOR MODE GAIN
TEST2 (Address = 09 Hex) Register Value
72 Hex
70 Hex
Gain
12dB
20dB
PRIMARY
T1 TERMINATING
DEVICE
MONITOR
PORT JACK
T1 LINE
X
F
M
R
DS21X52
Rt
Rm
Rm
SECONDARY T1
TERMINATING
DEVICE
相關PDF資料
PDF描述
DS21552LN 3.3V DS21352 and 5V DS21552 T1 Single-Chip Transceivers
DS21354 MTTF is frequently used interchangeably with MTBF
DS21354L 3.3V/5V E1 Single-Chip Transceivers
DS21354LN 3.3V/5V E1 Single-Chip Transceivers
DS21354 3.3V/5V E1 Single-Chip Transceivers
相關代理商/技術參數
參數描述
DS21552L+ 功能描述:網絡控制器與處理器 IC 5V T1 Transceiver RoHS:否 制造商:Micrel 產品:Controller Area Network (CAN) 收發(fā)器數量: 數據速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
DS21552LB 制造商:Rochester Electronics LLC 功能描述: 制造商:Maxim Integrated Products 功能描述:
DS21552LN 功能描述:網絡控制器與處理器 IC 5V T1 Transceiver RoHS:否 制造商:Micrel 產品:Controller Area Network (CAN) 收發(fā)器數量: 數據速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
DS21552LN+ 功能描述:網絡控制器與處理器 IC 5V T1 Transceiver RoHS:否 制造商:Micrel 產品:Controller Area Network (CAN) 收發(fā)器數量: 數據速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray
DS21554 制造商:Maxim Integrated Products 功能描述:
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