參數(shù)資料
型號： 28222-14
廠商： Conexant Systems, Inc.
英文描述： ATM Transmitter/Receiver with UTOPIA Interface
中文描述： 自動柜員機發(fā)射機/接收機的UTOPIA接口
文件頁數(shù)： 61/161頁
文件大?。?/td> 1832K
代理商： 28222-14
with the values found in the TX_HDR registers for a particular port by setting the
appropriate field insertion control bit in the CELL_GEN_x register. In 48-octet
mode the header fields always come from the programmed value in the
corresponding TX_HDR register.
The overhead fields of active cells are taken from the locations listed in
Table 2-18
or set to the indicated values.
CN8223
2.0 Functional Description
ATM Transmitter/Receiver with UTOPIA Interface
2.6 ATM Cell Processing
100046C
Conexant
2-27
Two rate control registers are provided for control of the port sources
to allow
programmable rate shaping of cell transmission. The ratio of active to idle cells is
programmable with 0.4 % granularity. The cell generation process maintains
status counts of non-idle cells transmitted for each of the four sources.
Table 2-17
lists the four cell generation modes provided by the CN8223.
2.6.1.1 CELL_GEN_x
Register
Per-port cell generation registers for FIFO Ports 0
–
3 are in the four
CELL_GEN_x registers [0x04
–
0x07]. Cell Generation Mode [bits 1,0] selects the
operating mode for the generation circuit.
The four modes described in
Table 2-17
are provided. In 52-, 53-, or 57-octet modes, the individual header fields obtained
from the FIFO interface can be overwritten. This overwriting is accomplished
Table 2-17. Cell Generation Modes
Mode
Function
48-Octet Mode
Provides for full ATM generation. Forty-eight octets are taken from the FIFO interface, the appropriate
header fields are attached, and the payload CRC is overwritten to form the ATM cell.
52-Octet Mode
Allows a 53-octet cell, less the HEC octet, to be transferred from the FIFO interface. The HEC is calculated
and inserted by the CN8223. The payload CRC for AAL3/4 can be inserted, or checked and transferred
without modification. Both the HEC and the payload CRC can be optionally disabled or errored on a
single-event basis. The cell generation process also provides HEC coset generation, ATM payload
scrambling. In each of the above modes, any header field can be overwritten with information from
control registers.
53-Octet Mode
Allows entire 53-octet cells to be transferred from the FIFO interface. This is the mode used when Port 0
is configured for UTOPIA.
57-Octet Mode
Allows the input of entire 57-octet PLCP slots from the FIFO interface. Can be used for external PLCP
insertion or test generation purposes.
相關PDF資料
PDF描述
28233-11 ATM Transmitter/Receiver with UTOPIA Interface
28C010TRPDB-12 150 x 32 pixel format, LED Backlight available
28C010TRT1DE-15 1 Megabit (128K x 8-Bit) EEPROM
28C010TRT1DE-20 1 Megabit (128K x 8-Bit) EEPROM
28C010TRT1FB-15 1 Megabit (128K x 8-Bit) EEPROM
相關代理商/技術參數(shù)
參數(shù)描述
282222-003 制造商:TE Connectivity 功能描述:81044/12-16-2 - Cable Rools/Shrink Tubing
282223-003 制造商:TE Connectivity 功能描述:81044/12-16-3 - Cable Rools/Shrink Tubing
282224-003 制造商:TE Connectivity 功能描述:81044/12-16-4 - Cable Rools/Shrink Tubing
282224-1 功能描述:汽車連接器 ECONOSEAL RCPT CONT .5MM RoHS:否 制造商:Amphenol SINE Systems 產(chǎn)品:Contacts 系列:ATP 位置數(shù)量: 型式:Female 安裝風格: 端接類型: 觸點電鍍:Nickel
282225-001 制造商:TE Connectivity 功能描述:81044/12-16-5 - Cable Rools/Shrink Tubing
發(fā)布緊急采購，3分鐘左右您將得到回復。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*