MCF5272CVF66J Freescale Semiconductor, MCF5272CVF66J Datasheet - Page 249
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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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11.5.20 Pointer-to-Transmit Descriptor Ring (ETDSR)
This register provides a pointer to the start of the circular transmit buffer descriptor queue in external
memory. This pointer must be long-word aligned. However, it is recommended it be aligned on a 16 byte
boundary (address evenly divisible by 16) in order to improve bus utilization. Bits 1 and 0 should be set
to 0 by the user. Non-zero values in these two bit positions are ignored by the hardware.
This register is not reset and must be initialized by the user prior to operation.
Freescale Semiconductor
31–2
Bits
1–0
Reset
Reset
Field
Field
Addr
R/W
R/W
31
15
X_DES_START
Name
—
MCF5272 ColdFire
Figure 11-25. Pointer-to-Transmit Descriptor Ring (ETDSR)
Reserved, should be cleared.
Pointer to start of transmit buffer descriptor queue.
Table 11-28. ETDSR Field Descriptions
®
Integrated Microprocessor User’s Manual, Rev. 3
X_DES_START
X_DES_START
MBAR + 0xC14
Read/Write
Read/Write
Undefined
Undefined
Description
2
0
Ethernet Module
1
16
0
0
11-31
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