PXB4340E Datasheet, PDF (91/185 Pages) Infineon Technologies AG – ICs for Communications

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Read/write Address E7_H
Value after reset 0060_H

Unused

Unused
OAMTHRD(6:0)
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OAMTHRD(6:0)
Threshold for forced OAM cell insertion in downstream direction. If a
queue of the downstream shared buffer is filled beyond this level OAM
cells destined to the respective PHY are not inserted.
0
No cell insertion downstream possible.
1...95
Cell insertion is possible until queue filling level reaches
threshold.
>95
Cell insertion downstream only limited by buffer overflow
condition.
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Read/write Address E8_H
Value after reset 0060_H


Unused


Unused
BPTHRD(6:0)
BPTHRD(6:0)
Queue backpressure level in downstream direction. If a queue exceeds
this threshold the downstream receive UTOPIA interface does not
accept any more cell:
0
Always backpressure to downstream receive UTOPIA
interface for all ports.
1...95
Backpressure to the respective PHY of the downstream
receive UTOPIA interface if queue filling level reaches
threshold.
>95
Queue specific backpressure disabled, backpressure
controlled by shared buffer overflow only.
(Recommended value is 65.)
Data Sheet
3-91
04.2000