參數(shù)資料
型號: 28222-13
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): 21/161頁
文件大?。?/td> 1832K
代理商: 28222-13
CN8223
1.0 Product Description
ATM Transmitter/Receiver with UTOPIA Interface
1.5 FIFO Port/UTOPIA Interface
100046C
Conexant
1-11
1.5.3 ATM Interface
Each cell is sent to a buffer to allow for header processing before being output to
the ATM interface. The buffer length is 10 octets for G.751 PLCP modes, and 6
octets for HEC alignment. A
cell-valid
output is provided to indicate that none
of the enabled error checks detected an error. The UTOPIA internal FIFO or
external circuitry is notified to discard the cell when the valid indication goes
inactive. Idle cells are automatically deleted from the ATM layer output. Parity
and control/delineation signals are provided with each octet at the port interface.
The microprocessor receives status and error counts as cell validation proceeds.
All event and error counters can be programmed to cause an interrupt on
overflow. Reading the interrupt source register allows the microprocessor to
identify overflows and thus update internal counts. All counters can be read by the
microprocessor and are cleared when read.
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