- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄367901 > PEB80900H ?Network Termination Controller? PDF資料下載
參數(shù)資料
| 型號(hào)： | PEB80900H |
| 英文描述： | ?Network Termination Controller? |
| 中文描述： | ？網(wǎng)絡(luò)終端控制器？ |
| 文件頁(yè)數(shù)： | 121/181頁(yè) |
| 文件大?。?/td> | 3288K |
| 代理商： | PEB80900H |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)第20頁(yè)第21頁(yè)第22頁(yè)第23頁(yè)第24頁(yè)第25頁(yè)第26頁(yè)第27頁(yè)第28頁(yè)第29頁(yè)第30頁(yè)第31頁(yè)第32頁(yè)第33頁(yè)第34頁(yè)第35頁(yè)第36頁(yè)第37頁(yè)第38頁(yè)第39頁(yè)第40頁(yè)第41頁(yè)第42頁(yè)第43頁(yè)第44頁(yè)第45頁(yè)第46頁(yè)第47頁(yè)第48頁(yè)第49頁(yè)第50頁(yè)第51頁(yè)第52頁(yè)第53頁(yè)第54頁(yè)第55頁(yè)第56頁(yè)第57頁(yè)第58頁(yè)第59頁(yè)第60頁(yè)第61頁(yè)第62頁(yè)第63頁(yè)第64頁(yè)第65頁(yè)第66頁(yè)第67頁(yè)第68頁(yè)第69頁(yè)第70頁(yè)第71頁(yè)第72頁(yè)第73頁(yè)第74頁(yè)第75頁(yè)第76頁(yè)第77頁(yè)第78頁(yè)第79頁(yè)第80頁(yè)第81頁(yè)第82頁(yè)第83頁(yè)第84頁(yè)第85頁(yè)第86頁(yè)第87頁(yè)第88頁(yè)第89頁(yè)第90頁(yè)第91頁(yè)第92頁(yè)第93頁(yè)第94頁(yè)第95頁(yè)第96頁(yè)第97頁(yè)第98頁(yè)第99頁(yè)第100頁(yè)第101頁(yè)第102頁(yè)第103頁(yè)第104頁(yè)第105頁(yè)第106頁(yè)第107頁(yè)第108頁(yè)第109頁(yè)第110頁(yè)第111頁(yè)第112頁(yè)第113頁(yè)第114頁(yè)第115頁(yè)第116頁(yè)第117頁(yè)第118頁(yè)第119頁(yè)第120頁(yè)當(dāng)前第121頁(yè)第122頁(yè)第123頁(yè)第124頁(yè)第125頁(yè)第126頁(yè)第127頁(yè)第128頁(yè)第129頁(yè)第130頁(yè)第131頁(yè)第132頁(yè)第133頁(yè)第134頁(yè)第135頁(yè)第136頁(yè)第137頁(yè)第138頁(yè)第139頁(yè)第140頁(yè)第141頁(yè)第142頁(yè)第143頁(yè)第144頁(yè)第145頁(yè)第146頁(yè)第147頁(yè)第148頁(yè)第149頁(yè)第150頁(yè)第151頁(yè)第152頁(yè)第153頁(yè)第154頁(yè)第155頁(yè)第156頁(yè)第157頁(yè)第158頁(yè)第159頁(yè)第160頁(yè)第161頁(yè)第162頁(yè)第163頁(yè)第164頁(yè)第165頁(yè)第166頁(yè)第167頁(yè)第168頁(yè)第169頁(yè)第170頁(yè)第171頁(yè)第172頁(yè)第173頁(yè)第174頁(yè)第175頁(yè)第176頁(yè)第177頁(yè)第178頁(yè)第179頁(yè)第180頁(yè)第181頁(yè)
PEB 80900
Part II
’
IEC-T
’
: Functional Description
Data Sheet
109
2001-04-02
6.7.3
A 1 kHz transparent channel is provided via the T bit on the IOM
-1 interface in both
directions. Every 8th T bit is transmitted via the Uk0 M channel. A low in the T bit causes
the M symbol to be set to minus polarity, overwriting any loop 4, loop 2 requests or RDS
errors that might be transmitted via Uk0. A high in the T bit causes the M symbol to be
set to zero or plus polarity depending on any loop 4, loop 2 requests or RDS errors. So
it is obvious, that during activation it is essential to keep the T bit high to enable the NT
(NT-RP) to recognize the loop status.
Each received M symbol with zero or plus polarity causes 8 consecutive T bits set to
high. Each received M symbol with minus polarity causes 8 consecutive T bits set to low.
Transparent Maintenance Channel
6.7.4
Interfaces to the Power Supply Circuit
The two-wire interface Uk0 provides power for the equipment repeater, network
termination (NT) and possibly one telephone terminal in emergency conditions, when
they must be fed by the exchange in the ISDN basic access. The NTC-T AM with IEC-T
functionality selected has an interface to the power supply/feeding circuit of the
exchange.
6.7.4.1
Scanning of Measured Values (MPF)
Using the common clocks 8 kHz and 512 or 4096 kHz, the feeding circuit transmits
serially an octet via the MPF pin into the NTC-T AM with IEC-T functionality selected at
the beginning of each IOM
-frame, which represents the measured loop feeding current.
As shown in fig. 5.4, fig. 5.5 and fig. 5.7 , the data at pin MPF are defined with equivalent
timing and therefore are clocked in at the same instants as the data an DIN pin. The octet
passed by the feeding circuit is identically placed as octet B1, the first of each frame both
in 256 kHz and 2048 kHz modes.
If not used, the MPF pin may be clamped either to VDD or GND.
6.7.4.2
Supervision of Power Feed (LT Mode)
For supervision of power feed control, lines DISS, APF, CLS are used in static, level
sensed operation mode.
In the C/I channel, a command LTD (LT disable, see
Chapter 7.3.3
) is defined to disable
the power feed, setting the pin DISS on high. If the power feed unit is disabled either by
the DISS pin or by an overload condition (short circuit), it indicates this to the NTC-T AM
with IEC-T functionality selected, setting the CLS pin to high. The NTC-T AM with IEC-
T functionality selected hands this information over to layer 2 units putting HI (high
impedance, see
Chapter 7.3.4
) into the C/I channel (see
Figure 79
).
An overload condition is indicated by the power feed unit with a short response time, by
means of a high on the APF pin (alarm power feed). In this condition, further adaption
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PEB8091(64MQFP) | ISDN Line Interface |
| PEB8091(64TQFP) | ISDN Line Interface |
| PEF8091(64MQFP) | 1MHz Off-Line Current Mode PWM and DC/DC Converter; Package: SO; No of Pins: 8; Temperature Range: 0°C to +70°C |
| PEF8091(64TQFP) | ISDN Line Interface |
| PEF80912 | Power Factor Controller; Package: PDIP; No of Pins: 16; Temperature Range: 0°C to +70°C |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PEB8090FV1.1 | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Infineon Technologies AG 功能描述: |
| PEB8091FDV1.1 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| PEB8091FGDV1.1 | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Infineon Technologies AG 功能描述: |
| PEB8091HDV1.1 | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Infineon Technologies AG 功能描述: |
| PEB8191FGDV1.1 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。