pxf4333 Infineon Technologies Corporation, pxf4333 Datasheet - Page 139

• Manufacturer Part Number: pxf4333
• Description: Abm 3g Atm Buf Fer Manager
• Manufacturer: Infineon Technologies Corporation

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
139
Feature
Bits
2
1
0
2
1
0
2
1
0
Interface Description
PXF 4333 V1.1
Min. SSRAM
Width
20
19
18
19
18
17
18
17
16
2001-12-17
ABM-3G