PXF4336 Datasheet, PDF (204/425 Pages) Infineon Technologies AG – ABM Premium ATM Buf fer Manager

ABM-P
PXF 4336 V1.1
Register Description
Register 9 UA5RXHD0/DA5RXHD0
Upstream/Downstream AAL5 Receive Header 0 Registers
CPU Accessibility:
Reset Value:
Offset Address:
Typical Usage:
Read/Write
0000_H
UA5RXHD0 0B_H
Read by CPU
DA5RXHD0 1B_H
Bit
15
14
13
12
11
10
9
8
LCI(11:4),
VPI(11:4) or GFC(3:0) | VPI(7:4),
LCI(11:4),
VPI(11:4) or GFC(3:0) | VPI(7:4),
Bit
7
6
5
4
3
2
1
0
LCI(3:0),
VPI(3:0),
LCI(3:0),
VPI(3:0)
VCI(15:12),
LCI(15:12),
VCI(15:12),
VCI(15:12)
Header octets one and two of first ATM cell of packet.
The ABM-P SAR unit does not interpret these bit fields, but copies them from ATM cells
that are extracted during AAL5 packet reassembly process. Extracted cells are
forwarded from the ABM-P like any cell to be transmitted by the respective UTOPIA
Interface. Thus, the bit field usage depends on the selected LCI mapping mode in the
particular application. From scheduler point of view the reassembly unit is addressed as
UTOPIA port number 30_H.
Data Sheet
204
2001-12-17