MOD5272-100IR NetBurner Inc, MOD5272-100IR Datasheet - Page 260
MOD5272-100IR
Manufacturer Part Number
MOD5272-100IR
Description
PROCESSOR MODULE FLASH MOD5272
Manufacturer
NetBurner Inc
Type
Controllers & Processorsr
Datasheets
1.MOD5272-100IR.pdf
(2 pages)
2.MOD5272-100IR.pdf
(3 pages)
3.MOD5272-100IR.pdf
(550 pages)
Specifications of MOD5272-100IR
Module/board Type
Processor Module
Ethernet Connection Type
10/100 Ethernet Port RJ-45
Operating Voltage
3.3 V
Product
Modules
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With/related Products
MOD5272
For Use With
528-1001 - KIT DEVELOP NETWORK FOR MOD5272
Lead Free Status / Rohs Status
Lead free / RoHS Compliant
Other names
528-1008
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Differences between MCF5272 FEC and MPC860T FEC
An underrun occurs when, during transmit, the transmit FIFO empties before the end of the
frame. Then, a bad CRC is appended to the partially transmitted data. In addition, the UN
bit is set in the last BD for the current frame. This situation can occur if the FEC cannot
access an internal bus, or if the next BD in the frame is not available.
11.7 Differences between MCF5272 FEC and
The MCF5272 features the same FEC as the MPC860T with a few differences. The
following list pertains to the MCF5272.
11-36
Bits
-
-
• Limited throughput full-duplex 100 Mbps operation. External bus use is the limiting
• Only big-endian mode is supported for buffer descriptors and buffers.
• Separate interrupt vectors for Rx, Tx and non-time critical interrupts
• Interrupt priority is set in the interrupt controller
• The formula for calculating E_MDC clock frequency differs between MCF5272 and
MPC860T FEC
factor.
MPC860T:
— MCF5272: E_MDC_FREQUENCY= system frequency / (4 * MII_SPEED)
— MPC860T: E_MDC_FREQUENCY= system frequency / (2 * MII_SPEED)
Tx Buffer Pointer Written by the user. The transmit buffer pointer, which contains the address of the
Data Length
Name
Anytime the software driver sets an R bit in a transmit
descriptor, the driver should immediately write to TDAR.
MCF5272 ethernet controller signal names are generally
identical to those used in the MPC860T, except for a prefix of
‘E_’. For example, MDC in the MPC860T corresponds to
E_MDC in the MCF5272.
Table 11-35. TxBD Field Descriptions (Continued)
Written by the user. Data length is the number of octets the FEC should transmit from this
BD’s data buffer. It is never modified by the FEC. Bits [10–0] are used by the DMA engine;
bits [15–11] are ignored.
associated data buffer, may be even or odd. The buffer must reside in memory external to
the FEC. This value is never modified by the FEC.
MCF5272 User’s Manual
NOTE:
NOTE:
Description
MOTOROLA
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