EASY 6996M CPU Infineon Technologies, EASY 6996M CPU Datasheet - Page 47
EASY 6996M CPU
Manufacturer Part Number
EASY 6996M CPU
Description
BOARD EVAL W/CPU ADM6996M
Manufacturer
Infineon Technologies
Series
Samurair
Datasheet
1.EASY_6996M_CPU.pdf
(216 pages)
Specifications of EASY 6996M CPU
Main Purpose
Interface, Ethernet
Embedded
No
Utilized Ic / Part
ADM6996M
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Secondary Attributes
-
Primary Attributes
-
Other names
EASY6996MCPUIN
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in the internal SSRAM. Samurai-6M/6MX (ADM6996M/MX) searches the learning table for the SA+FID of the
incoming packet or the instruction from CPU. When both fields (a single SA may exist in different FID) are
matched, there is a match.
3.1.16.1
The Samurai-6M/6MX (ADM6996M/MX) searches for SA and FID of an incoming packet in the address table and
takes dynamic learning action as follows:
1. If (SA+FID) was not found in the learning table, create a new entry with SA, FID, and the incoming port.
2. If (SA+FID) was found in the learning table, and the incoming port and the Portmap doesn’t match, create a
Dynamic learning will be disabled in the following condition:
1. Security violation exists on the port.
2. VLAN violation exists on the port.
3. The packet is a PAUSE packet.
4. The number of the addresses that port has learned has reached its maximum.
5. The port disables its learning function (see extended control registers).
6. The packet is an illegal packet (too long, too short or FCS error).
7. A packet with Special Tag is received and the LRN bit is 0 and LRN_Valid = 1
8. The port is in the Disabled state in the Spanning Tree Protocol.
9. The port is in the Blocking/Listening state in the Spanning Tree Protocol.
10. All the four entries in the same hash address are occupied and all of them are static addresses.
3.1.16.2
The Samurai-6M/6MX (ADM6996M/MX) implements the manual learning through the CPU’s help. The CPU can
create or remove any entry in the address table. Each entry could be static. “Static” means the entry will not be
aged forever. When the entry is static, then the definition in some fields is modified to make Samurai-6M/6MX
(ADM6996M/MX) work more flexibly.
3.1.16.3
3.1.16.3.1
69
Bad
Field
Bad
Info_Type
Data Sheet
new entry with SA, FID, and the incoming port.
Dynamic Learning
Manual Learning
Learning Table
68
Info_Type
Entry Format in the Learning Table
Description
The entry is marked to show if it is failed during the learning table memory bist time.
0
1
Static Address.
0
1
B
B
B
B
Don’t fail
Fail
The entry is not static
The entry is static
67
Occupy
66 … 58
Info_Ctrl/Age Timer
47
57 … 52
Portmap
B
.
51 … 48
FID
Revision 1.4, 2006-03-24
Function Description
Samurai-6M/MX
ADM6996M/MX
47 … 0
Address
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