pxb4340e Infineon Technologies Corporation, pxb4340e Datasheet - Page 24
pxb4340e
Manufacturer Part Number
pxb4340e
Description
Atm Oam Processor Aop
Manufacturer
Infineon Technologies Corporation
Datasheet
1.PXB4340E.pdf
(185 pages)
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1 BR cell from downstream
2 LB cell from downstream
3 FM cell from downstream
4 scan poll
5 scan OAM insertion
6 µP cell insertion
7 µP RAM access (RMW)
8 utopia
1)
The downstream transmit buffer also does forced OAM cell insertion by back-pressuring user
cells to the downstream receive interface and possibly to the previous chip. It is realized as
shared buffer of up to 24 queues, associated to the respective PHYs. The back-pressured user
cells are released in bursts of up to 687 Mbit/s when no other cells with higher priority according
to
released to the PHYs according to their respective speed.
Data Sheet
1 = highest priority, 8 = lowest priority
are present. These bursts must be stored by the downstream transmit buffer and
1 utopia
2-24
1 FM cell insertion
2 BR cell from upstream
3 LB cell from upstream
4 scan poll
5 scan OAM insertion
6 µP cell insertion
7 µP RAM access (RMW)
8 utopia
backpressure to
adjacent device
04.2000
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