pxf4333 Infineon Technologies Corporation, pxf4333 Datasheet - Page 125
pxf4333
Manufacturer Part Number
pxf4333
Description
Abm 3g Atm Buf Fer Manager
Manufacturer
Infineon Technologies Corporation
Datasheet
1.PXF4333.pdf
(361 pages)
- Current page: 125 of 361
- Download datasheet (4Mb)
Head of Line Blocking Avoidance
The internal Cell Handler Unit accepts any cell from the common UTOPIA receive FIFO
to either accept the cell or discard the cell depending on threshold decisions. Thus, no
HOL blocking can occur. Optionally, internal thresholds can be enabled to generate
backpressure to UTOPIA port groups in a fixed scheme:
• Threshold 0 effects ports {0, 4, 8, 12, 16, 20, 24, 28, 32, 36, 40, 44}
• Threshold 1 effects ports {1, 5, 9, 13, 17, 21, 25, 29, 33, 37, 41, 45}
• Threshold 2 effects ports {2, 6, 10, 14, 18, 22, 26, 30, 34, 38, 42, 46}
• Threshold 3 effects ports {3, 7, 11, 15, 19, 23, 27, 31, 35, 39, 43, 47}
In case of pending backpressure, a specific port reacts in the same way as being
disabled:
• Master Mode:
• Slave Mode:
Note: The internal backpressure does only effect the polling/response scheme. The
5.1.2
The UTOPIA transmit interface supports up to 48 PHY addresses that can be individually
enabled.
In Master Mode, 48 PHYs are supported in four groups (4*12 scheme).
In Slave configuration, two polling modes are supported:
• Up to 48 Ports in 4 groups (4*12 scheme)
• Up to 31 Ports in 1 group (1*31 scheme)
Note: In Slave Mode, the interface responds to all enabled port addresses in either
A cell buffer pool of 64 cells is provided for UTOPIA port specific queues. The number of
enabled ports determines the queue length that can be configured. At least one cell
buffer per queue is provided.
Data Sheet
A backpressured (or disabled) port is deleted from the polling scheme.
A backpressured (or disabled) port does not generate a cell available signal indication.
UTOPIA receive FIFO is served in any case to avoid HOL blocking.
scheme.
UTXD: UTOPIA Transmit Downstream (PHY side)
125
Interface Description
PXF 4333 V1.1
2001-12-17
ABM-3G
Related parts for pxf4333
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
Antenna Switch Silicon Pin Diode
Manufacturer:
Infineon Technologies Corporation
Datasheet:
Part Number:
Description:
Silicon Switching Diodes
Manufacturer:
Infineon Technologies Corporation
Datasheet:
Part Number:
Description:
Single Igbt Driver Ic
Manufacturer:
Infineon Technologies Corporation
Datasheet:
Part Number:
Description:
Igbt Modules
Manufacturer:
Infineon Technologies Corporation
Datasheet:
Part Number:
Description:
Igbt Modules
Manufacturer:
Infineon Technologies Corporation
Datasheet:
Part Number:
Description:
Igbt Modules
Manufacturer:
Infineon Technologies Corporation
Datasheet:
Part Number:
Description:
5 Volt Standard Regulator
Manufacturer:
Infineon Technologies Corporation
Datasheet:
Part Number:
Description:
Active Biased Transistor
Manufacturer:
Infineon Technologies Corporation
Datasheet:
Part Number:
Description:
N-channel Small Signal Mosfet 20v?800v
Manufacturer:
Infineon Technologies Corporation
Datasheet:
Part Number:
Description:
Sipmos Small-signal Transistor
Manufacturer:
Infineon Technologies Corporation
Datasheet:
Part Number:
Description:
Complementary Mosfets 60v Small-signal-transistor
Manufacturer:
Infineon Technologies Corporation
Datasheet:
Part Number:
Description:
Complementary Mosfets 60v
Manufacturer:
Infineon Technologies Corporation
Datasheet:
Part Number:
Description:
P-channel Mosfets Power-transistor
Manufacturer:
Infineon Technologies Corporation
Datasheet:
Part Number:
Description:
N-channel Mosfet 20v?300v Power Transistor Power Mosfet
Manufacturer:
Infineon Technologies Corporation
Datasheet:
Part Number:
Description:
Power Mosfets
Manufacturer:
Infineon Technologies Corporation
Datasheet: