MCF5272CVF66J Freescale Semiconductor, MCF5272CVF66J Datasheet - Page 250
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MCF5272CVF66J
Manufacturer Part Number
MCF5272CVF66J
Description
IC MCU 166MHZ 196MAPBGA
Manufacturer
Freescale Semiconductor
Series
MCF527xr
Specifications of MCF5272CVF66J
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
-40°C ~ 85°C
Package / Case
196-MAPBGA
Processor Series
MCF527x
Core
ColdFire V2
3rd Party Development Tools
JLINK-CF-BDM26, EWCF
Development Tools By Supplier
NNDK-MOD5272-KIT, NNDK-MOD5270-KIT
Leaded Process Compatible
No
Rohs Compliant
No
Peak Reflow Compatible (260 C)
No
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Data Converters
-
Lead Free Status / Rohs Status
No
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MCF5272CVF66J
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
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Ethernet Module
11.5.21 Receive Buffer Size Register (EMRBR)
The EMRBR register dictates the maximum size of all receive buffers. Note that because receive frames
are truncated at 2k-1 bytes, only bits 10–4 are used. This value should take into consideration that the
receive CRC is always written into the last receive buffer. To allow one maximum size frame per buffer,
R_BUFF_SIZE must be set to MAX_FL or larger. The R_BUFF_SIZE must be evenly divisible by 16. To
insure this, bits 3–0 are forced low. To minimize bus utilization (descriptor fetches), it is recommended
that R_BUFF_SIZE be at least 256 bytes.
This register,
11-32
31–11
10–4
Bits
3–0
Reset
Reset
Field
Field
Addr
R/W
R/W
31
15
R_BUFF_SIZE
Figure
Name
—
—
11-26, is not reset and must be initialized by the user prior to operation.
0000_0
MCF5272 ColdFire
—
Reserved, should be cleared.
Reserved, should be cleared.
Receive buffer size.
Figure 11-26. Receive Buffer Size (EMRBR)
Table 11-29. EMRBR Field Descriptions
11
®
Integrated Microprocessor User’s Manual, Rev. 3
10
0000_0000_0000_0000
MBAR + 0xC18
Read/Write
Read/Write
R_BUFF_SIZE
—
Description
4
3
Freescale Semiconductor
0000
—
16
0
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