DS537 Datasheet, PDF (27/148 Pages) Xilinx, Inc – LogiCORE IP XPS LL TEMAC

LogiCORE IP XPS LL TEMAC (v2.03a)
Table 9: Reset and Address Filter Register Bit Definitions
Bit(s)
Name
Core
Access
Reset
Value
Description
23-24 TxVStrpMode Read/Write
Transmit VLAN Strip Mode. These bits select the operation mode for
transmit VLAN stripping and are only used when
C_TEMACx_TXVLAN_STRP = 1. Valid VLAN TPID values must be
initialized in the TPIDx0 and TPIDx1 registers. For mode 11, the Transmit
VLAN data table must be initialized. Please refer to the VLAN section of
this document for more details.
00 _{00 - No VLAN tags will be stripped from transmit frames}
01 - One VLAN tag will be stripped from all transmit frames that have
VLAN tags
10 - Reserved
11 - One VLAN tag will be stripped from select transmit frames that
already have VLAN tags
21-22 RxVStrpMode Read/Write
Receive VLAN Strip Mode. These bits select the operation mode for
receive VLAN stripping and are only used when
C_TEMACx_RXVLAN_STRP = 1. Valid VLAN TPID values must be
initialized in the TPIDx0 and TPIDx1 registers. For mode 11, the Receive
VLAN data table must be initialized. Please refer to the VLAN section of
this document for more details.
00 _{00 - No VLAN tags will be stripped from receive frames}
01 - One VLAN tag will be stripped from all receive frames that have VLAN
tags
10 - Reserved
11 - One VLAN tag will be stripped from select receive frames that already
have VLAN tags
New Functions Enable. This bit provides a simple way to disable new
functions that have been added in this version. This includes the VLAN
tagging, VLAN stripping, VLAN translation, and extended multicast
filtering. Enabling the new functions will only affect operation if the
20
NewFncEnbl Read/Write
0 _{functions have been added to the design using the appropriate}
parameters at build-time.
0 - disable new functions
1 - enable new functions if present
Enhanced Multicast Filter Enable. This bit provides a simple way to
disable the new enhanced multicast filtering if present. This is necessary
if promiscuous address reception mode is desired or if use of the built-in
4 TEMAC multicast address registers is required when the core includes
19
EMultiFltrEnbl Read/Write
0 ^{the enhanced multicast address filtering function enabled at build time by}
the C_TEMACx_MCAST_EXTEND parameters. Please refer to the
Enhanced Multicast Filtering section of this document for more details.
0 - disable enhanced multicast address filtering mode
1 - enable enhanced multicast address filtering mode if present
Statistics Counters Reset. This bit provides a means for resetting the
statistics counters if present. This bit is self clearing.
18
StatsRst
Read/Write
0 _{0 - normal operation, statistics counters not reset}
1 - initiate a reset of the statistics counters
0 - 17
Reserved
Read
0x0
Reserved. These bits are reserved for future definition and will always
return zero.
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