MC68EN360AI25VL Freescale, MC68EN360AI25VL Datasheet - Page 930
MC68EN360AI25VL
Manufacturer Part Number
MC68EN360AI25VL
Description
Manufacturer
Freescale
Datasheet
1.MC68EN360AI25VL.pdf
(962 pages)
Specifications of MC68EN360AI25VL
Family Name
M68000
Device Core
ColdFire
Device Core Size
32b
Frequency (max)
25MHz
Instruction Set Architecture
RISC
Operating Supply Voltage (max)
3.3V
Operating Supply Voltage (min)
2.7V
Operating Temp Range
0C to 70C
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Pin Count
240
Package Type
FQFP
Lead Free Status / RoHS Status
Compliant
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RISC Microcode from RAM
C.6 ENHANCED ETHERNET FILTERING
The enhanced Ethernet filtering microcode has been created to add a bit more flexibility to
the current Ethernet Controller. It allows the user to perfectly accept or reject frames with
destination addresses that are contained in a table of 24 entries. In addition to the filtering
capability, the microcode adds the ability to replace the externally sampled tag byte with one
that is extracted from the address table.
C.6.1 Key Features
C.6.2 Performance
The overhead incurred by the filtering algorithm will depend upon the number of entries in
the address table. Table C-5 shows possible configurations of other channels given the load
added by a number of entries in the address table.
C-8
• End Delimiter (ED) generation/checking
• Init Rx/Tx, Stop TX, Restart TX and Enter Hunt Mode Commands
• Token Rotation Timer, Idle Timer, Slot Timer and Time-out Timer
• Consumes 1280 bytes of the QUICC’s internal memory.
• Can accept or reject incoming frames if the destination MAC address is contained in a
• Allows a shorter list to obtain better peripheral performance.
• Can optionally tag incoming accepted frames with an 8-bit tag appended to the end of
• The filtering can be turned off to allow tagging with no frame rejection.
• Can filter on group and individual addresses.
• Is a “small” microcode (consumes 768 bytes of DPRAM).
• Filtering is only supported on one Ethernet channel (SCC1), the other channel operates
list of 24 preprogrammed entries.
the frame (rather than using a CAM).
normally.
Number of addresses
17-24
9-16
1-8
Freescale Semiconductor, Inc.
For More Information On This Product,
Table C-5. Channel Configuration
MC68360 USER’S MANUAL
Go to: www.freescale.com
Possible Configuration of Other Channels
1 x 10 Mbit Ethernet, 1 x 200 Kbit HDLC
1 x 10 Mbit Ethernet, 1 x 200 Kbit HDLC
1 x 10 Mbit Ethernet
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