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DM9006 Datasheet(PDF) 31 Page - Davicom Semiconductor, Inc.

Part No. DM9006
Description  10/100 Mbps 2-port Ethernet Switch Controller with General Processor Interface
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Maker  DAVICOM [Davicom Semiconductor, Inc.]
Homepage  http://www.davicom.com.tw
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DM9006 Datasheet(HTML) 31 Page - Davicom Semiconductor, Inc.

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DM9006
2-port Switch with Processor Interface
Preliminary datasheet
31
DM9006-13-DS-P01
September 1, 2009
5
IGMPE
PH0,RO
When reading multicast address table, this bit indicated the entry is IGMP entry or
not.
0: Non-IGMP entry
1: IGMP entry
4
EA_STATIC
PH0,RW
When writing unicast address table, this bit can be used to set the entry as static or
dynamic. When reading unicast address table, it indicates the entry is static or
dynamic.
0: Entry is dynamic.
1: Entry is static, never be age-out
3:0
PORT
PH0,RW
Forwarding Port Number (0~3), when access Unicast Address Table.
Forwarding Port Mapping {uP, P2, P1, P0}, when access Multicast Address Table.
6.46 Snooping Control Register 1 (78H)
Bit
Name
Default
Description
7
RESERVED
0,RO
Reserved
6:5
UIPMPC
PHE0,RW Unregistered IP Multicast Packet Control
The IP multicast packet with a destination address which does not match any of
groups announced in earlier IGMP Membership Reports, i.e. not found in the
IGMP membership table.
00: As normal multicast packets
01: Dropped.
10: Force forward to processor port.
11: Forward to all ports except incoming & uP port.
4
UD_IGR
PHE0,RW User-defined IGMP Router Port Configuration Enable
0: Disable, the router portmap is automatic manipulation via IGMP snooping.
1: Enable, the router portmap is static defined by user.
3
SIGS2UP
PHE0,RW IGMP Packet Forward to uP Port only when Software-IGS
2
HIGS2UP
PHE0,RW IGMP Packet Forward to uP Port also when Hardware-IGS
0: IGMP packet doesn’t forwards to processor port when Hardware based
IGMP Snooping is enabled.
1: IGMP packet also forwards to processor port when Hardware based IGMP
Snooping is enabled.
1
SIGS_EN
PHE0,RW Software-based IGMP Snooping Enable
0: Hardware based IGMP Snooping, without software intervention. (default)
1: Software based IGMP Snooping
0
IGS_EN
PHE0,RW IGMP Snooping Enable
0: Disable
1: Enable
6.47 Snooping Control Register 2 (79H)
Bit
Name
Default
Description
7
SCP_PE
PHE0,RW Snooping Control Packet Priority Enable
0: Disable
1: Enable
6:5
SCP_PRI
PHE0,RW Snooping Control Packet Priority
00: Queue 0
01: Queue 1
10: Queue 2
11: Queue 3


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