MCF5272VF66 Freescale Semiconductor, MCF5272VF66 Datasheet - Page 225

• Manufacturer Part Number: MCF5272VF66
• Description: IC MPU 32BIT 66MHZ 196-MAPBGA
• Manufacturer: Freescale Semiconductor
• Series: MCF527xr

Specifications of MCF5272VF66

• Core Processor: Coldfire V2
• Core Size: 32-Bit
• Speed: 66MHz
• Connectivity: EBI/EMI, Ethernet, I²C, SPI, UART/USART, USB
• Peripherals: DMA, WDT
• Number Of I /o: 32
• Program Memory Size: 16KB (4K x 32)
• Program Memory Type: ROM
• Ram Size: 1K x 32
• Voltage - Supply (vcc/vdd): 3 V ~ 3.6 V
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 196-MAPBGA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Eeprom Size: -
• Data Converters: -

In promiscuous mode (PROM = 1 in RCR), the FEC receives all of the incoming frames regardless of their
address. In this mode, the destination address lookup is still performed and RxBD[MISS] is set
accordingly. If address recognition did not achieve a match, the frame is received with RxBD[MISS] set.
If address recognition achieves a match, the frame is received without setting RxBD[MISS].
Freescale Semiconductor
.
Address Type
Destination
broadcast
individual
group
Receive Frame
Receive Frame
The FEC compares the destination address field of the received frame with the 48-bit MAC address
programmed into MALR and MAUR.
The FEC determines whether or not the group address is a broadcast address. If not broadcast, a hash table
lookup is performed using the 64-entry hash table defined in HTLR and HTUR.
The frame is accepted unconditionally.
MCF5272 ColdFire
Figure 11-4. Ethernet Address Recognition Flowchart
True
True
Table 11-3. Ethernet Address Recognition
Check Address
Discard Frame
Promiscuous
I/G Address
Hash Match
Broadcast
®
Address
Mode
Integrated Microprocessor User’s Manual, Rev. 3
?
?
?
?
G
False
False
False
(RCR[PROM] = 0)
False
FEC Address Processing
I
True (RCR[PROM] = 1)
Perfect Match
?
True
Receive Frame
Set Miss Bit
Receive Frame
Ethernet Module
11-7