- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄383876 > T7256A Compliance with the New ETSI PSD Requirement PDF資料下載
參數(shù)資料
| 型號(hào)： | T7256A |
| 英文描述： | Compliance with the New ETSI PSD Requirement |
| 中文描述： | 符合新的ETSI PSD的要求 |
| 文件頁(yè)數(shù)： | 19/116頁(yè) |
| 文件大小： | 1056K |
| 代理商： | T7256A |
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)當(dāng)前第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)
Data Sheet
January 1998
T7256 Single-Chip NT1 (SCNT1) Transceiver
Lucent Technologies Inc.
15
S/T-Interface Frame Structure
(continued)
In the TE-to-NT direction, in at least four of five frames, this second violation occurs within 13 bits of the F bit. If this
coding algorithm is not maintained, the receiver loses synchronization, but the T7256 continues transmitting.
F = Framing bit
L = dc balancing bit
D = D-channel bit
E = Echo D-channel bit
FA = Auxiliary framing bit or Q-channel bit
A = Activation bit
S = S-channel bit
M = Multiframe synchronization bit
B1 = Bit within B channel 1
B2 = Bit within B channel 2
5-2480 (C)
Figure 7. Details of NT and TE Frames
Signals from NT to TE
Signals from TE to NT
No signal.
A continuous signal with the following pattern:
positive ZERO, negative ZERO, six ONEs.
INFO 0
INFO 2
No signal.
Frame with all bits of B, D, and D echo (E) channels set to
binary ZERO; bit A set to binary ZERO; N and L bits set ac-
cording to the normal coding rules.
INFO 0
INFO 1
INFO 4
Frames with operational data on B, D, and E channels; bit
A set to binary ONE.
INFO 3
Synchronized frames with operational data on B
and D channels.
48 1
+0
4
48 1
2
3
9 10 11 12 13 14 15 16 17
23 24 25 26 27 28
34 35 36 37 38 39
45 46 47 48 1
B1
L
F
L B1
B1 B1 E
D
A FA N B2 B2
B2 E
D
M B1 B1
B1 E
D
S B2 B2
B2 E
D
L
F
L
MULTIFRAME SYNC
BIT (OPTIONAL, ONCE
IN 20 FRAMES)
(NT TO TE)
2
10 11 12 13 14 15
23 24 25 26
34 35 36 37
45 46 47
B1
D
F
B1 L
D
L FA L
B2 L
D
L
B1 L
D
L
B2
B2 L
D
L
1
–0
L
3
4
16 17
B2 B2
27 28
B1 B1
38 39
B2
48
FA/N BIT PAIR
INVERT TO FLAG
Q-BIT TRANSMISSION
(TE TO NT)
Q-BIT OPTION
(EVERY 5TH FRAME)
2-bit OFFSET
48 bits IN 250
μ
s
TIME
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| T7288 | CEPT/E1 Line Interface(CEPT/E1 線接口) |
| T7290A | DS1/T1/CEPT/E1 Line Interface(DS1/T1/CEPT/E1 線接口) |
| T7295-1 | E3 Integrated Line Receiver(E3 集成線接收器) |
| T7295-6 | DS3/SONET STS-1 Integrated Line Receiver(DS3/SONET STS-1 集成線接收器) |
| T7296 | Integrated Line Transmitter(集成PCM線傳送器) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| T7257 | 制造商:TE Connectivity 功能描述: |
| T-726 | 制造商:RHOMBUS-IND 制造商全稱:Rhombus Industries Inc. 功能描述:ADSL Line Interface Transformers |
| T7263 | 制造商:TE Connectivity 功能描述: |
| T7263A | 制造商:Toshiba America Electronic Components 功能描述:T7263A |
| T7264 | 制造商:TE Connectivity 功能描述: |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。