參數(shù)資料
型號(hào)： 73M1966B-EVM
廠商： Maxim Integrated Products
文件頁數(shù)： 57/88頁
文件大?。?/td> 0K
描述： BOARD DEMO/MOTH 73M1966 20-TSSOP
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 1
系列： *
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(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
73M1966B-IM/F 制造商:Maxim Integrated Products 功能描述:
73M1966B-KEYCHN 功能描述:網(wǎng)絡(luò)開發(fā)工具 Keychain Eval Module RoHS:否 制造商:Rabbit Semiconductor 產(chǎn)品:Development Kits 類型:Ethernet to Wi-Fi Bridges 工具用于評(píng)估:RCM6600W 數(shù)據(jù)速率:20 Mbps, 40 Mbps 接口類型:802.11 b/g, Ethernet 工作電源電壓:3.3 V
73M1AR0015F 功能描述:RES 0.0015 OHM 1% 1W 1206 制造商:cts resistor products 系列:73M1A 包裝:帶卷（TR） 零件狀態(tài):在售 電阻值:1.5 MOhms 容差:±1% 功率（W）:1W 成分:金屬薄膜 特性:電流檢測 溫度系數(shù):±100ppm/°C 工作溫度:-55°C ~ 155°C 封裝/外殼:1206（3216 公制） 供應(yīng)商器件封裝:1206 大小/尺寸:0.126" 長 x 0.063" 寬（3.20mm x 1.60mm） 高度 - 安裝（最大值）:0.035"（0.90mm） 端子數(shù):2 故障率:- 標(biāo)準(zhǔn)包裝:4,000
73M1AR001F 功能描述:RES 0.001 OHM 1% 1W 1206 制造商:cts resistor products 系列:73M1A 包裝:帶卷（TR） 零件狀態(tài):在售 電阻值:1 MOhms 容差:±1% 功率（W）:1W 成分:金屬薄膜 特性:電流檢測 溫度系數(shù):±100ppm/°C 工作溫度:-55°C ~ 155°C 封裝/外殼:1206（3216 公制） 供應(yīng)商器件封裝:1206 大小/尺寸:0.126" 長 x 0.063" 寬（3.20mm x 1.60mm） 高度 - 安裝（最大值）:0.035"（0.90mm） 端子數(shù):2 故障率:- 標(biāo)準(zhǔn)包裝:4,000
73M1AR0025F 功能描述:RES 0.0025 OHM 1% 1W 1206 制造商:cts resistor products 系列:73M1A 包裝:帶卷（TR） 零件狀態(tài):在售 電阻值:2.5 mOhms 容差:±1% 功率（W）:1W 成分:金屬薄膜 特性:電流檢測 溫度系數(shù):±100ppm/°C 工作溫度:-55°C ~ 155°C 封裝/外殼:1206（3216 公制） 供應(yīng)商器件封裝:1206 大小/尺寸:0.126" 長 x 0.063" 寬（3.20mm x 1.60mm） 高度 - 安裝（最大值）:0.035"（0.90mm） 端子數(shù):2 故障率:- 標(biāo)準(zhǔn)包裝:4,000
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