PXB 4220 E V3.4-G Infineon Technologies, PXB 4220 E V3.4-G Datasheet - Page 49
PXB 4220 E V3.4-G
Manufacturer Part Number
PXB 4220 E V3.4-G
Description
IC ATM/IP INTERWORKING BGA-256
Manufacturer
Infineon Technologies
Datasheet
1.PXB4220E-V33.pdf
(290 pages)
Specifications of PXB 4220 E V3.4-G
Applications
*
Mounting Type
Surface Mount
Package / Case
256-BGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
PXB4220EV3.4X
PXB4220EV34GXP
SP000017873
PXB4220EV34GXP
SP000017873
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Figure 10
No discarding of HEC errored cells as an option is available and selectable via bit
“a_hec_mode” in the register acfg
indicated by setting the most significant bit in the UDF field at the UTOPIA receive
interface. For correct operation bit P_CELL_DIS must be cleared.
4.2.1.3
ITU-T I.432.3 [34] recommends the self-synchronizing scrambler x
scrambling at E1 data rates. For T1 no scrambling is recommended.
The self-synchronizing scrambler function is implemented in the device. It can be
disabled per port by the x43_descrambling bit in the “ATM Receive Reference Slot” in
RAM1.
4.2.1.4
According to ITU-T I.361 [30], idle cells, physical layer OAM cells and cells reserved for
use by the physical layer are not passed to the ATM layer at the UNI.
Data Sheet
Cell Payload Descrambling
Idle, Physical Layer or Unassigned Cell Deletion
HEC Detection According to ATM Forum
detected
No error
(Chapter
Detection
Mode
49
PXB 4219E, PXB 4220E, PXB 4221E
7.2). In this case an errored HEC is
Error detected
Cell discarded
Operational Description
43
+1 for payload
IWE8, V3.4
2003-01-20
Atmfhec
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