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DM9006 Datasheet(PDF) 61 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) 61 Page - Davicom Semiconductor, Inc.

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DM9006
2-port Switch with Processor Interface
Preliminary datasheet
61
DM9006-13-DS-P01
September 1, 2009
Busy
Reg70h.0
Set MAC Address (Reg71h~76h)
Set Port Number/Mapping (Reg77h)
Set static/dynamic* (Reg77h)
Set overriding* (Reg77h)
Entry Write
Issue Command (Reg70h)
Busy
Reg70h.0
Check Status
(Reg70h.[6:5])
Finish
Start
1
0
0
1
(5). Read the command status from Ethernet
Address
Control/Status
Register
1
(Reg70H.[6:5]).
Entry Search
(1). Check the busy bit of Ethernet Address
Control/Status Register 1 (Reg70H.0) to seek
the availability of access engine. Waiting until
engine is available and to keep on following.
(2). Write the MAC address to the Ethernet Address
Data Register (Reg71H~76H).
(3). Write the “SEARCH” command and assign the
target table to Ethernet Address Control/Status
Register 1 (Reg70H.[4:1]) to start the operation.
(4). Check the busy bit again, wait for available.
(5). Read the command status from Ethernet
Address
Control/Status
Register
1
(Reg70H.[6:5]).
(6). Read the Port Number or Port Map from
Ethernet Address Control/Status Register 2
(Reg77H.[3:0])
(7). If need, read the entry sequence (the sequence
number of entry in address table) from Ethernet
Address Data Register (Reg71H~72H).
(8). If need, read the entry’s attributes that include
static (unicast address table only), IGMP
signature (multicast address table only) and
overriding from Ethernet Address Control/Status
Register 2 (77H.[6:4]).
Entry Read
(1). Check the busy bit of Ethernet Address
Control/Status Register 1 (Reg70H.0) to seek
the availability of access engine. Waiting until
engine is available and to keep on following.
(2). Write the entry sequence to the Ethernet
Address Data Register (Reg71H~76H).
(3). Write the “READ” command and assign the
target table to Ethernet Address Control/Status
Register 1 (Reg70H.[4:1]) to start the operation.
(4). Check the busy bit again, wait for available.
(5). Read the command status from Ethernet
Address Control/Status Register 1 (70H.[6:5]).
(6). Read the Port Number or Port Map from
Ethernet Address Control/Status Register 2
(Reg77H.[3:0])
(7). If target is unicast or multicast address table,
read the entry’s MAC address from Ethernet
Address Data Register (Reg71H~76H). If target
is IGMP membership table, read the entry
sequence (the sequence number of entry in
address table) from Ethernet Address Data
Register (Reg71H~72H).
(8). If need, read the entry’s attributes that include
static, IGMP signature and overriding from
Ethernet Address Control/Status Register 2
(Reg77H.[6:4]).


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