- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄16261 > DS32512DK (Maxim Integrated Products)KIT DEMO FOR DS32512 PDF資料下載
參數(shù)資料
| 型號： | DS32512DK |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 49/130頁 |
| 文件大小： | 0K |
| 描述： | KIT DEMO FOR DS32512 |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 設(shè)計資源： | DS32512 Gerber Files |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 主要目的： | 電信，線路接口單元（LIU） |
| 已用 IC / 零件： | DS32512 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁當(dāng)前第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁第72頁第73頁第74頁第75頁第76頁第77頁第78頁第79頁第80頁第81頁第82頁第83頁第84頁第85頁第86頁第87頁第88頁第89頁第90頁第91頁第92頁第93頁第94頁第95頁第96頁第97頁第98頁第99頁第100頁第101頁第102頁第103頁第104頁第105頁第106頁第107頁第108頁第109頁第110頁第111頁第112頁第113頁第114頁第115頁第116頁第117頁第118頁第119頁第120頁第121頁第122頁第123頁第124頁第125頁第126頁第127頁第128頁第129頁第130頁
DS32506/DS32508/DS32512
25 of 130
1s where the polarity of the first 1 is opposite the polarity of the BPV in the last B3ZS/HDB3 codeword. The first 1 is
transmitted according to the normal AMI rule, but the second 1 is transmitted with the same polarity as the first 1,
thus making the second 1 a bipolar violation.
If the transmitter is configured for binary interface format (Section 8.2.2.2) and EXZI = 1, then when the configured
manual error insert control goes from zero to one, the transmitter waits for the next occurrence of three (four)
consecutive zeros in the transmit data stream and inhibits the replacement of those zeros with a B3ZS (HDB3)
codeword.
The transmitter ensures that there is at least one intervening 1 between consecutive BPV or EXZ errors. If a
second error insertion request of a given type (BPV or EXZ) is initiated before a previous request has been
completed, the second request is ignored.
8.2.4 AIS Generation
The transmitter can be configured to transmit an AIS signal by asserting the TAIS pin or the PORT.CR3:TAIS
configuration bit. The type of AIS signal to be generated is specified by the LIU mode (LMn[1:0] pins or
PORT.CR2:LM[1:0] configuration bits) and the AIS type (AIST pin or PORT.CR3:AIST configuration bit). When
AIST = 0, the AIS signal is unframed all ones for DS3, E3 and STS-1 modes. When AIST = 1, the AIS signal is the
framed DS3 AIS signal in DS3 mode, unframed all ones in E3 mode, and the AIS-L signal in STS-1 mode. The
AIS-L signal is normally scrambled, but scrambling can be disabled by setting PORT.CR3:SCRD = 1.
8.2.5 Waveshaping
8.2.5.1
Standards-Compliant Waveshaping
Waveshaping converts the transmit clock, positive data, and negative data signals into a single analog AMI signal
with the waveshape required for interfacing to DS3/E3/STS-1 lines. Figure 8-1 and Table 8-2 show the DS3
waveform equations and template. Figure 8-2 and Table 8-4 show the STS-1 waveform equations and template.
Figure 8-3 shows the E3 waveform template.
8.2.5.2
Programmable Waveshaping
The transmit waveshape can be adjusted with the TWSC[19:0] bits in the LIU.TWSCR1 and LIU.TWSCR2
registers. These signals control the amplitude, slew rates and various other aspects of the waveform template. See
the register descriptions for further details.
8.2.6 Line Build-Out
Because DS3 and STS-1 signals must meet the waveform templates at the cross-connect through any cable length
from 0 to 450 feet, the waveshaping circuitry includes a selectable LBO feature. For cable lengths of 225 feet or
greater, both the TLBO pin and the LIU.CR1:TLBO configuration bit should be low to disable the LBO circuitry.
When the LBO circuitry is disabled, output pulses are driven onto the coaxial cable without any preattenuation. For
cable lengths less than 225 feet, either the TLBO pin or the LIU.CR1:TLBO configuration bit should be high to
enable the LBO circuitry. When the LBO circuitry is enabled, pulses are preattenuated by the LBO circuitry before
being driven onto the coaxial cable to provide attenuation that mimics the attenuation of 225 feet of coaxial cable.
8.2.7 Line Driver
The transmit line driver can be disabled (TXP and TXN outputs high impedance) by deasserting the TOE pin and
deasserting the LIU.CR1:TOE configuration bit. Powering down the transmitter through the TPD pin or the
PORT.CR1:TPD configuration bit also disables the transmit line driver.
8.2.8 Interfacing to the Line
The transmitter interfaces to the outgoing DS3/E3/STS-1 coaxial cable (75
Ω) through a 1:1 isolation transformer
connected to the TXP and TXN pins. The transmit line termination can be internal to the device, external to the
device, or a combination of both. Figure 4-1 shows the arrangement of the transformer when the internal
termination is enabled (LIU.CR1:TTRE = 1) and no external termination resistors are used. Figure 4-2 shows the
arrangement of the transformer and external termination resistors when the internal termination is disabled
(LIU.CR1:TTRE = 0). The internal termination resistor value for the transmitter is specified in LIU.CR1:TRESADJ.
Table 8-7 and Table 8-8 specify the required characteristics of the transformer and provide a list of recommended
transformers.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| DS3253DK | KIT DEMO FOR DS3253 |
| DS26522DK | KIT DESIGN FOR DS26522 |
| EMM08DSEF-S13 | CONN EDGECARD 16POS .156 EXTEND |
| DS26528DK | KIT DESIGN FOR DS26528 |
| ESM12DRTN-S13 | CONN EDGECARD 24POS .156 EXTEND |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS32512N | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 12-Port DS3/E3/STS-1 Line Interface Unit 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 |
| DS32512N# | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 12-Port DS3/E3/STS-1 Line Interface Unit 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 |
| DS32512N+ | 功能描述:網(wǎng)絡(luò)控制器與處理器 IC 12-Port DS3/E3/STS-1 Line Interface Unit 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 |
| DS32512NA2 | 制造商:Maxim Integrated Products 功能描述:DS32512 X12 DS3/E3 LIU REVA2 IND - Rail/Tube |
| DS32512NW | 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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。