pxf4336 Infineon Technologies Corporation, pxf4336 Datasheet - Page 174

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pxf4336

Manufacturer Part Number
pxf4336
Description
Abm Premium Atm Buf Fer Manager
Manufacturer
Infineon Technologies Corporation
Datasheet
The minimum required width of the cell pointer SSRAM is in the range 16..20 bits
depending on the selected Cell Storage Size and additional feature configurations:
Table 5-10
Cell Storage RAM
cell capacity
(each)
256K
128K
64K
Note: VBR.2/3 represents VBR shaping function 2 and 3 requiring one additional bit
Table 5-11
Data Sheet
storage in the CPR for the CLP bit.
EOP marking represents one additional bit storage in the CPR for End-of-Packet
indication required by EPD/PPD and VC-Merge operation.
gives an example of supported SDRAM configuration:
SSRAM Configuration Examples
Enabled
Features
VBR.2/3 +
EOP marking
EOP marking
none
VBR.2/3 +
EOP marking
EOP marking
none
VBR.2/3 +
EOP marking
EOP marking
none
Stored
Address
Pointer
Width
18
18
18
17
17
17
16
16
16
174
Feature
Bits
2
1
0
2
1
0
2
1
0
Interface Description
PXF 4336 V1.1
Min. SSRAM
Width
20
19
18
19
18
17
18
17
16
2001-12-17
ABM-P

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