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參數(shù)資料
| 型號： | ST70135A |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | ASCOTTM DMT TRANSCEIVER |
| 中文描述： | ASCOTTM大唐收發(fā)器 |
| 文件頁數(shù)： | 13/29頁 |
| 文件大?。?/td> | 198K |
| 代理商： | ST70135A |
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ST70135A
13/29
ATM Specific TC Layer Functions
The 2 bytes streams (fast and slow) are received
from the byte-based processing unit. When ATM
cells are transported, this block provides basic cell
functions such
as
cell
payload descrambling, idle/unassigned cell filter,
cell Header ErrorCorrection (HEC) and detection.
The cell processing happens according to ITU-T
I.163 standard. Provision is also made for BER
measurements at this ATM cell level. When non
cell oriented byte streams are transported, thecell
processing unit is not active.
Figure 7 :
ATM Specific TC Layer Functions
synchronization,
cell
The interface module collects cells (from the
cell-based function module) or a Byte stream
(from the deframer). Cells are stored in FIFO’s
(424 bytes or 8 cell wide, transmit buffers have the
same size), from which they are extracted by 2
interface submodules, one providing a Utopia
level 1 interface and the other a Utopia level 2
interface.Byte stream are dumped on the SLAP
(Synchronous Link Access Protocol) interface.
Only one type of interface can be enabled in a
specific configuration.
Figure 8 :
Interface Module
CELLSCRAMBLER
DESCRAMBLER
SYNCHRONIZER
CELLSCRAMBLER
DESCRAMBLER
SYNCHRONIZER
HEC
HEC
CELL
INSERTION/
FILTER
CELL
INSERTION/
FILTER
BER
BER
FAST
SLOW
To
Interface
Module
From
Generic
TC
SLAP
LEVEL
1
UTOPIA
LEVEL
2
UTOPIA
LEVEL
1
UTOPIA
LEVEL
2
UTOPIA
SLAP
FASTATM
FAST BYTE STREAM
SLOWATM
SLOWBYTE STREAM
From
ATM
TC
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ST70136 | CPE ADSL ANALOG FRONT END |
| ST70136B | CPE ADSL ANALOG FRONT END |
| ST70136G | CPE ADSL ANALOG FRONT END |
| ST70137 | UNICORNTM PCI & USB CONTROLLERLESS ADSL DMT TRANSCEIVER |
| ST70137TQFP | UNICORNTM PCI & USB CONTROLLERLESS ADSL DMT TRANSCEIVER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| ST70136 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:CPE ADSL ANALOG FRONT END |
| ST70136B | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:CPE ADSL ANALOG FRONT END |
| ST70136G | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:CPE ADSL ANALOG FRONT END |
| ST70136Q | 功能描述:射頻無線雜項 ADSL Analg Front-End RoHS:否 制造商:Texas Instruments 工作頻率:112 kHz to 205 kHz 電源電壓-最大:3.6 V 電源電壓-最小:3 V 電源電流:8 mA 最大功率耗散: 工作溫度范圍:- 40 C to + 110 C 封裝 / 箱體:VQFN-48 封裝:Reel |
| ST70137 | 制造商:STMicroelectronics 功能描述: |
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