MCIMX281AVM4B Freescale Semiconductor, MCIMX281AVM4B Datasheet - Page 1678
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: 1678 of 2327
- Download datasheet (17Mb)
Programmable Registers
26.4.21 ENET MAC Pointer to Receive Descriptor Ring Register
The user writes the ERDSR. It provides a pointer to the start of the circular receive buffer
descriptor queue in external memory. This pointer must be 32-bit aligned; however it is
recommended it be made 128-bit aligned (evenly divisible by 16).The user should write
bits 1 and 0 to 0. Hardware ignores non-zero values in these two bit positions.
Address:
1678
Reset
Reset
Reset
R_FSTART
Bit
Bit
Bit
W
W
W
RSRVD0
RSRVD1
RSRVD2
R
R
R
31 11
Field
9 2
1 0
10
15
31
15
0
0
0
HW_ENET_MAC_ERDSR 800F_0000h base + 180h offset = 800F_0180h
(HW_ENET_MAC_ERDSR)
14
30
14
0
0
0
RSRVD0[15:11]
Reserved bits. Write as 0.
Must be set. Not used, implemented for software compatibility.
Address of first receive FIFO location. Acts as delimiter between receive and transmit FIFOs. For proper
operation, ensure that R_FSTART is set to 0x48 or greater.
Read/write: Not used, implemented for software compatibility.
Reserved bits. Write as 0.
13
29
13
0
0
0
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
12
28
12
0
0
0
HW_ENET_MAC_FRSR field descriptions
11
27
11
0
0
0
10
26
10
1
0
0
R_DES_START[15:2]
25
0
0
0
9
9
R_DES_START[31:16]
24
1
0
0
8
8
Description
23
0
0
0
7
7
R_FSTART
22
0
0
0
6
6
21
5
0
0
5
0
20
4
0
0
4
0
Freescale Semiconductor, Inc.
19
0
0
0
3
3
18
0
0
0
2
2
17
RSRVD2
RSRVD0
0
0
0
1
1
16
0
0
0
0
0
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