- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄378049 > PEF2080 (SIEMENS AG) S/T Bus Interface Circuit(SBC) PDF資料下載
參數(shù)資料
| 型號： | PEF2080 |
| 廠商： | SIEMENS AG |
| 英文描述： | S/T Bus Interface Circuit(SBC) |
| 中文描述： | S / T的總線接口電路（SBC）的 |
| 文件頁數(shù)： | 34/74頁 |
| 文件大?。?/td> | 2620K |
| 代理商： | PEF2080 |
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頁當(dāng)前第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
Semiconductor Group
35
Functional Description
2.5
Additional Functions
Test Functions
Test loops
Two kinds of test loops may be closed in the SBC, which depend on the selected mode of operation.
In both test loops, all three channels (B1, B2 and D) are looped back. In a “transparent loop” the
data are also sent forward (in addition to being looped back), whereas in a “non-transparent loop”
the forward data path is blocked (CCITT I.430). These test loops are shown in
figure 17
.
Figure 17
Test Loops of SBC
Test loop 3 is activated with the C/l channel command Activate Request Loop (ARL). An S interface
is not required since INFO3 is looped back to the receiver. When the receiver has synchronized
itself to this signal, the message “Test Indication’’ (or “Awake Test Indication”) is delivered in the C/l
channel. No signal is transmitted over the S interface.
Test loop 2 is likewise activated over the IOM interface with Activate Request Loop (ARL). No S line
is required. INFO4 is looped back to the receiver and also sent to the S interface. When the receiver
is synchronized, the message “AIU” is sent in the C/l channel. In the test loop mode the S-interface
awake detector is disabled, and echo bits are set to logical “0”.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| PEF22554 | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| PEF22554E | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| PEF22554HT | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| PEF2256 | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
| PEF2256E | Ultraframer DS3/E3/DS2/E2/DS1/E1/DS0 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PEF2080-N | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:S/T Bus Interface Circuit(SBC) |
| PEF2091 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:ICs for Communications(ISDN Echocancellation Circuit) |
| PEF2091F | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:?ISDN Echocancellation Circuit - 2B1Q Code? |
| PEF2091FV5.3 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:ICs for Communications(ISDN Echocancellation Circuit) |
| PEF2091HV5.3 | 制造商:INFINEON 制造商全稱:Infineon Technologies AG 功能描述:ICs for Communications(ISDN Echocancellation Circuit) |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。