S/UNI®-ATLAS-3200 Telecom Standard Product Data Sheet
Preliminary
11.5.3 VC Table
Register 0x110: VC Table Maximum Index
Bit
31:17
Type
Function
Unused
Default
X
16
15
14
13
12
11
10
9
8
7
6
5
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Reserved
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
MAXVC[15]
MAXVC[14]
MAXVC[13]
MAXVC[12]
MAXVC[11]
MAXVC[10]
MAXVC[9]
MAXVC[8]
MAXVC[7]
MAXVC[6]
MAXVC[5]
MAXVC[4]
MAXVC[3]
MAXVC[2]
MAXVC[1]
MAXVC[0]
4
3
2
1
0
MAXVC[15:0]
The MAXVC[15:0] bits represent the current maximum VC Table index (VCRA[15:0]). It is
used by the background processes of the VC Table as the first connection upon which the
background processes act. The index is decremented with each subsequent connection
serviced. An accurate value in this location maximizes the efficiency of the S/UNI-ATLAS-
3200. Fixing this register to all ones guarantees that all 64K connections will be serviced by
the background processes. Because the background processes require access to the Linkage
table in external SRAM, do not set MAXVC[15:0] to a value greater than supported by
the depth of external SRAM provisioned.
Setting MAXVC[15:0] to all zeros effectively halts the background tasks for all locations
except VCRA[15:0]=0x00000.
Proprietary and Confidential to PMC-Sierra, Inc., and for its Customers’ Internal Use
Document ID: PMC-1990553, Issue 4
225
PMC [ PMC-SIERRA, INC ]
