MCIMX281AVM4B Freescale Semiconductor, MCIMX281AVM4B Datasheet - Page 1680
![no-image](/images/manufacturer_photos/0/2/262/freescale_semiconductor_sml.jpg)
MCIMX281AVM4B
Manufacturer Part Number
MCIMX281AVM4B
Description
IC MPU I.MX28 1.2 289MAPBGA
Manufacturer
Freescale Semiconductor
Series
i.MX28r
Datasheets
1.MCIMX283DVM4B.pdf
(2327 pages)
2.MCIMX283DVM4B.pdf
(20 pages)
3.MCIMX281AVM4B.pdf
(72 pages)
Specifications of MCIMX281AVM4B
Core Processor
ARM9
Core Size
32-Bit
Speed
454MHz
Connectivity
CAN, EBI/EMI, Ethernet, I²C, MMC, SmartCard, SPI, SSI, UART/USART, USB OTG
Peripherals
DMA, I²S, LCD, POR, PWM, WDT
Program Memory Size
128KB (32K x 32)
Program Memory Type
Mask ROM
Ram Size
32K x 32
Voltage - Supply (vcc/vdd)
1.25 V ~ 5.25 V
Data Converters
A/D 17x12b
Oscillator Type
External
Operating Temperature
-40°C ~ 85°C
Package / Case
289-LFBGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Number Of I /o
-
Eeprom Size
-
Lead Free Status / Rohs Status
Supplier Unconfirmed
- Current page: 1680 of 2327
- Download datasheet (17Mb)
Programmable Registers
26.4.23 ENET MAC Maximum Receive Buffer Size Register
The EMRBR is a user-programmable register that dictates the maximum size of all receive
buffers. Note that because receive frames are truncated at 2k-15bytes, 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 on maximum size frame per buffer, EMRBR must be set
to RCR[MAX_FL] or larger. The EMRBR must be evenly divisible by 16. To ensure 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.
Address:
Re-
1680
set
Bit
W
R
R_BUF_SIZE
31
RSRVD0
RSRVD1
0
31 11
Field
10 4
3 0
30
0
29
0
HW_ENET_MAC_EMRBR
(HW_ENET_MAC_EMRBR)
28
0
Reserved bits. Write as 0.
Receive buffer size in bytes.
0x00 0 bytes
0x01 16 bytes
0x02 32 bytes
...
0x7F 2032 bytes
Reserved bits. Write as 0.
27
0
26
0
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
25
0
24
0
HW_ENET_MAC_EMRBR field descriptions
23
0
22
RSRVD0
0
21
0
800F_0000h base + 188h offset = 800F_0188h
20
0
19
0
18
0
17
0
16
0
15
0
Description
14
0
13
0
12
0
11
0
10
0
0
9
R_BUF_SIZE
0
8
Freescale Semiconductor, Inc.
0
7
0
6
0
5
0
4
3
0
RSRVD1
0
2
0
1
0
0
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