PXF4333 Datasheet, PDF (55/361 Pages) Infineon Technologies AG – ABM 3G ATM Buf fer Manager

ABM-3G
PXF 4333 V1.1
Functional Description
Test/ SSRAM _ARC
Clocks
IF
SDRAM Interface (up)
Cell Handler upstream
AAL5
BSCAN _{uP IF}
Buffer
Manager
(BM)
Queue
Scheduler
(QS)
Cell Handler downstream
SDRAM Interface (dn)
ARC
bit 15
SWRES
Register ‘MODE 1’
Figure 3-9 Reset System Overview
Note: Initialization of external and internal RAM must be started by software via
command bits ‘INITRAM’ and ‘INITSDRAM’ in register “MODE1” on Page 312
following the device reset.
3.3
System Integration
The ABM-3G has two operational modes: Bi-directional mode and Uni-directional mode.
The directional terminology for the modes refers to the usage of the ABM-3G cores, not
to the connections. The connections are bi-directional in all cases. In Bi-directional
mode, one ABM-3G core is used exclusively for the cells of a connection in the upstream
direction and the other core exclusively handles cells of the same connection in the
downstream direction. In Uni-directional mode, only one core always will be used to
handle the cells of a connection both in up- and downstream direction. The two basic
Data Sheet
55
2001-12-17