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參數資料
| 型號： | 73M1916-IM/F |
| 廠商： | Maxim Integrated Products |
| 文件頁數： | 57/88頁 |
| 文件大小： | 0K |
| 描述： | MICRODAA SET FXO OF VOIP 32-QFN |
| 產品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 490 |
| 系列： | MicroDAA™ |
| 功能： | 數據存取裝置（DAA） |
| 接口： | PCM，SPI |
| 電路數： | 1 |
| 電源電壓： | 3 V ~ 3.6 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 32-VFQFN 裸露焊盤 |
| 供應商設備封裝： | 32-QFN 裸露焊盤（5x5） |
| 包裝： | 散裝 |
| 包括： | * |
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73M1866B/73M1966B Data Sheet
DS_1x66B_001
60
Rev. 1.6
9
Barrier Information
9.1
Isolation Barrier
The 73M1x66B uses the Teridian MicroDAA proprietary isolation method based upon low-cost pulse
transformer coupling. This technique provides several advantages over other methods, including:
Lower BOM cost.
Reduced component count.
Lower radiated noise (EMI).
Improved operation in noisy environments.
The MicroDAA has additional and enhanced functionality such as the support of powering the Line-Side
DAA circuit from the Host-Side Device. This allows operation on leased lines circuits and on low current
conditions commonly encountered in long loops. The MicroDAA can also operate entirely from line power
when sufficient loop current is available.
Since the transformer is the only component crossing the isolation barrier, it solely determines the
isolation between the PSTN and the FXO’s digital interface. Several vendors can supply compatible
transformers with ratings up to 6000 V.
Communication of PCM data, control data and status data is performed in the digital domain and is
bidirectional at a rate of 1.536 Mbps.
9.2
Barrier Powered Options
The 73M1x66B has the ability to be used either in a Line Powered Mode or one where the Line-Side
Device can be powered across the barrier from the Host-Side Device. The power-on default for the
73M1x66B is Barrier Powered Mode.
9.2.1
Barrier Powered Operation
In this default mode of operation, the 73M1x66B Host-Side Device drives the pulse transformer in such a
way that power pulses are time division multiplexed into the transmit bit stream (half the time) that is
rectified by circuitry in the Line-Side Device and uses this energy to power itself.
9.2.2
Line Powered Operation
If there is sufficient current available from the PSTN line, the 73M1x66B can be programmed to use line
power instead of power from across the barrier.
9.3
Synchronization of the Barrier
Since the communication across the barrier is digital, synchronization of data across the barrier is of
absolute importance. To that end, the devices implement special procedures to ensure reliability across
the barrier.
When loss of synchronization is detected, the SLHS bit is set to 1 and likewise SYNL is also set to 1 and
initiates an interrupt to the host. Once the SYNL bit is asserted a new barrier synchronization sequence
will automatically begin.
Once read, the SLHS bit is reset, but will be set again if the synchronization loss continues.
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相關代理商/技術參數 |
參數描述 |
|---|---|
| 73M1916-IMR/F | 功能描述:電信線路管理 IC DAA-FXO VOLP System Line Side RoHS:否 制造商:STMicroelectronics 產品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray |
| 73M1916-IVT/F | 功能描述:電信線路管理 IC DAA-FXO VOLP System Line Side RoHS:否 制造商:STMicroelectronics 產品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray |
| 73M1916-IVTR/F | 功能描述:電信線路管理 IC DAA-FXO VOLP System Line Side RoHS:否 制造商:STMicroelectronics 產品:PHY 接口類型:UART 電源電壓-最大:18 V 電源電壓-最小:8 V 電源電流:30 mA 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:VFQFPN-48 封裝:Tray |
| 73M1922-DB | 功能描述:網絡開發(fā)工具 73M1922 Demo Brd RoHS:否 制造商:Rabbit Semiconductor 產品:Development Kits 類型:Ethernet to Wi-Fi Bridges 工具用于評估:RCM6600W 數據速率:20 Mbps, 40 Mbps 接口類型:802.11 b/g, Ethernet 工作電源電壓:3.3 V |
| 73M1966B-DB | 功能描述:網絡開發(fā)工具 73M1966B Demo Brd RoHS:否 制造商:Rabbit Semiconductor 產品:Development Kits 類型:Ethernet to Wi-Fi Bridges 工具用于評估:RCM6600W 數據速率:20 Mbps, 40 Mbps 接口類型:802.11 b/g, Ethernet 工作電源電壓:3.3 V |
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