DM8603EP DAVICOM [Davicom Semiconductor, Inc.], DM8603EP Datasheet - Page 75
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DM8603EP
Manufacturer Part Number
DM8603EP
Description
10/100 Mbps 3-port Ethernet Switch Controller with MII / RMII Interface
Manufacturer
DAVICOM [Davicom Semiconductor, Inc.]
Datasheet
1.DM8603EP.pdf
(107 pages)
- Current page: 75 of 107
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9.2.14 Special Tag
between Switch and CPU within frame. An extra 4-bytes tag is added into frame to carry different content
according to direction of special tag frame. Received special tag (CPU
mapping of packet sent by CPU and some configurations about frame handle rules. Transmitted special tag
(Switch
identifier called Special Tag Ether-Type that can use to recognize special tag frame. The value of this field
can be set by REG 10h.14h.
tag, CPU can tell Switch the handle rule per frame over the internal setting. This feature can be enable
through REG 10h.13h.[6].
Preliminary datasheet
DM8603-12-DS-P01
November 8, 2010
The Special Tag function provided by the DM8603 is used to exchange control and status information
The following figure shows special tag frame format. In left 2 bytes of special tag field, there is an
The detail information carried by received special tag is described as below. Through received special
CPU) indicates the source port number of incoming frame.
10/100 Mbps 3-port Ethernet Switch Controller with MII / RMII Interface
Switch) specifies the desired port
DM8603
75
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