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參數(shù)資料
| 型號(hào)： | XRT7300IVTR |
| 廠商： | Exar Corporation |
| 文件頁數(shù)： | 4/55頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC LIU E3/DS3/STS-1 SGL 44TQFP |
| 標(biāo)準(zhǔn)包裝： | 1,000 |
| 類型： | 線路接口裝置（LIU） |
| 驅(qū)動(dòng)器/接收器數(shù)： | 1/1 |
| 規(guī)程： | DS3，E3，STS-1 |
| 電源電壓： | 4.75 V ~ 5.25 V |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 44-LQFP |
| 供應(yīng)商設(shè)備封裝： | 44-TQFP（10x10） |
| 包裝： | 帶卷 (TR) |
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XRT7300
E3/DS3/STS-1 LINE INTERFACE UNIT
REV. 1.1.2
8
35
TXOFF
I
Transmitter OFF Input:
Setting this input pin “High” configures the XRT7300 to turn off the Transmitter in
the device.
NOTES:
1. This input pin is ignored if the XRT7300 is operating in the HOST Mode.
2. Tie this pin to GND if the XRT7300 is going to be operating in the HOST
Mode.
36
TCLK
I
Transmit Clock Input for TPDATA and TNDATA:
This input pin must be driven at 34.368 MHz for E3 applications, 44.736MHz for
DS3 applications, or 51.84MHz for SONET STS-1 applications. The XRT7300
uses this signal to sample the TPDATA and TNDATA input pins. By default, the
XRT7300 is configured to sample these two pins on the falling edge of this sig-
nal.
If the XRT7300 is operating in the HOST Mode, then the device can be config-
ured to sample the TPDATA and TNDATA input pins on the rising edge of TCLK.
37
TPDATA
I
Transmit Positive Data Input:
The XRT73L00 samples this pin on the falling edge of TCLK. If the device sam-
ples a “1” at this input pin, then it generates and transmits a positive polarity
pulse to the line.
NOTES:
1. The data should be applied to this input pin if the Transmit Section is
configured to accept Single-Rail data from the Terminal Equipment.
2. If the XRT73L00 is operating in the HOST Mode, then the XRT73L00
can be configured to sample the TPDATA pin on either the rising or fall-
ing edge of TCLK.
38
TNDATA
I
Transmit Negative Data Input:
The XRT7300 samples this pin on the falling edge of TCLK. If the device sam-
ples a “1” at this input pin, then it generates and transmits a negative polarity
pulse to the line.
NOTES:
1. This input pin is ignored and should be tied to GND if the Transmit Sec-
tion is configured to accept Single-Rail data from the Terminal Equip-
ment.
2. If the XRT7300 is operating in the HOST Mode, then the XRT7300 can
be configured to sample the TNDATA pin on either the rising or falling
edge of TCLK.
39
GND
-
Transmit Analog Ground
40
TRING
O
Transmit RING Output:
The XRT7300 uses this pin, along with TRING, to transmit a bipolar line signal
via a 1:1 transformer.
41
TTIP
O
Transmit TIP Output:
The XRT7300 uses this pin, along with TTIP, to transmit a bipolar line signal via
a 1:1 transformer.
42
VDD
-
Transmit Analog Power Supply
PIN DESCRIPTION
PIN #SYMBOL
TYPE
DESCRIPTION
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| XRT7300IVTR-F | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC RoHS:否 制造商:Micrel 產(chǎn)品:Controller Area Network (CAN) 收發(fā)器數(shù)量: 數(shù)據(jù)速率: 電源電流（最大值）:595 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PBGA-400 封裝:Tray |
| XRT7302IV | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:PCM Transceiver |
| XRT73L00 | 制造商:EXAR 制造商全稱:EXAR 功能描述:E3/DS3/STS-1 LINE INTERFACE UNIT |
| XRT73L00A | 制造商:EXAR 制造商全稱:EXAR 功能描述:E3/DS3/STS-1 LINE INTERFACE UNIT |
| XRT73L00AES | 功能描述:界面開發(fā)工具 Eval System for XRT73L00A Series RoHS:否 制造商:Bourns 產(chǎn)品:Evaluation Boards 類型:RS-485 工具用于評(píng)估:ADM3485E 接口類型:RS-485 工作電源電壓:3.3 V |
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