MCF5270VM100J Freescale Semiconductor, MCF5270VM100J Datasheet - Page 372
MCF5270VM100J
Manufacturer Part Number
MCF5270VM100J
Description
IC MCU 166MHZ 256MAPBGA
Manufacturer
Freescale Semiconductor
Series
MCF527xr
Specifications of MCF5270VM100J
Core Processor
Coldfire V2
Core Size
32-Bit
Speed
100MHz
Connectivity
EBI/EMI, Ethernet, I²C, SPI, UART/USART
Peripherals
DMA, WDT
Number Of I /o
61
Program Memory Type
ROMless
Ram Size
64K x 8
Voltage - Supply (vcc/vdd)
1.4 V ~ 1.6 V
Oscillator Type
External
Operating Temperature
0°C ~ 70°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
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Eeprom Size
-
Program Memory Size
-
Data Converters
-
Lead Free Status / Rohs Status
Details
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
MCF5270VM100J
Manufacturer:
Freescale Semiconductor
Quantity:
10 000
- Current page: 372 of 626
- Download datasheet (11Mb)
Fast Ethernet Controller (FEC)
19.2.4.23 Receive Buffer Size Register (EMRBR)
The EMRBR is a 9-bit register programmed by the user. The EMRBR register dictates the
maximum size of all receive buffers. Note that because receive frames will be 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, EMRBR
must be set to RCR[MAX_FL] or larger. The EMRBR 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 EMRBR be greater than or equal to 256 bytes.
The EMRBR register does not reset, and must be initialized by the user.
19.2.5 Buffer Descriptors
This section provides a description of the operation of the driver/DMA via the buffer descriptors.
It is followed by a detailed description of the receive and transmit descriptor fields.
19-28
Address
Reset
Reset
30–11
31–2
10–4
Bits
Bits
1–0
3–0
W
W
R
R
—
—
31
15
0
0
X_DES_
R_BUF_
START
Name
Name
SIZE
—
—
30
14
0
0
—
—
—
Figure 19-24. Receive Buffer Size Register (EMRBR)
—
—
29
13
0
0
Pointer to start of transmit buffer descriptor queue.
Reserved, should be cleared.
Reserved, should be written to 0 by the host processor.
Receive buffer size.
Reserved, should be written to 0 by the host processor.
Table 19-27. EMRBR Field Descriptions
Table 19-26. ETDSR Field Descriptions
—
—
28
12
0
0
—
—
27
11
0
0
MCF5271 Reference Manual, Rev. 2
—
—
26
10
0
25
—
—
0
9
IPSBAR + 0x1188
—
—
24
0
8
R_BUF_SIZE
Descriptions
Descriptions
23
—
—
0
7
—
—
22
0
6
—
—
21
0
5
—
—
20
0
4
—
—
19
0
0
3
Freescale Semiconductor
—
—
18
0
0
2
—
—
17
0
0
1
16
—
—
0
0
0
Related parts for MCF5270VM100J
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
32-bit Embedded Controller Division
Manufacturer:
FREESCALE [Freescale Semiconductor, Inc]
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet:
Part Number:
Description:
Manufacturer:
Freescale Semiconductor, Inc
Datasheet: