mu9c8338a Music Semiconductors, Inc., mu9c8338a Datasheet - Page 20

• Manufacturer Part Number: mu9c8338a
• Description: Mu9c8338a 10/100mb Ethernet Filter Interface
• Manufacturer: Music Semiconductors, Inc.

Built-In Routines
Table 26: Destination Address Search Routine
Table 27: Source Address Search Routine
Table 28: Purge Routine
If a match is found and PCFG_EXT bit 3 = 0, update time stamp:
If a match is found and PCFG_EXT bit 3 = 1, read associated data:
If no match is found, learn new address:
Line
Line
Line
5a
5b
5c
5d
1
2
3
4
5
1
2
3
4
1
2
3
4
/CM
/CM
/CM
H
H
H
H
H
H
H
H
H
H
H
L
L
L
L
L
L
/W
/W
/W
H
H
L
L
L
L
L
L
L
L
L
L
L
L
L
L
L
/E Cycle
/E Cycle
/E Cycle
Short
Short
Short
Short
Short
Short
Short
Short
Short
Long
Long
Long
Long
Long
Long
Long
Long
/EC
/EC
/EC
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
L
MOV_NF,CR,V
VBC_ALM,E
Mnemonic
Mnemonic
Mnemonic
MOV_HM,
MOV_HM,
CR,MR1
CR,MR1
SBR
SFR
20
DQ(15:0)
DQ(15:0)
DQ(15:0)
043DH
ddddH
ddddH
ddddH
ddddH
ddddH
ddddH
ddddH
0368H
ddddH
0368H
0334H
0619H
ddddH
0618H
xxxxH
xxxxH
Notes:
Description
Dummy write to Segment 0
Write 1st 16 bits to Segment 1
Write 2nd 16 bits to Segment 2
Write 3rd 16 bits to Segment 3 and compare
Read Associated Data, FFFFH is no match
Description
Dummy write to Segment 0
Write 1st 16 bits to Segment 1
Write 2nd 16 bits to Segment 2
Write 3rd 16 bits to Segment 3 and compare
Move to Highest match through MR1 to update Time
Stamp and Port ID. This command resides in SSAU
(see System Op-Code Registers).
Read associated data to check if Permanent bit is set.
If Permanent bit = 0, then 5c is performed. Otherwise,
the routine is complete.
Move to Highest match through MR1 to update Time
Stamp and Port ID. This command resides in SSAU
(see System Op-Code Registers).
Move SA to Next Free with Time Stamp and Port ID.
This command resides in SSAL (see System Op-Code
Registers).
Description
Select Background Register set
Purge time stamp value and compare
Mark all matching entries “Empty”
Select Foreground Register set
Rev. 0a