MCIMX281AVM4B Freescale Semiconductor, MCIMX281AVM4B Datasheet - Page 882
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: 882 of 2327
- Download datasheet (17Mb)
Programmable Registers
10.8.21 ENET Clock Control Register (HW_CLKCTRL_ENET)
This register provides control for ETHERNET clock generation
EXAMPLE
HW_CLKCTRL_ENET_WR(BF_CLKCTRL_ENET_SLEEP(1));
Address:
882
Reset
Reset
DIV_FRAC_EN
Bit
Bit
W
W
RSRVD1
R
R
BUSY
Field
28 8
6 0
DIV
29
7
31
15
1
0
HW_CLKCTRL_ENET
30
14
1
0
This read-only bit field returns a one when the clock divider is busy transfering a new divider value across
clock domains.
Always set to zero (0).
1 = Enable fractional divide. 0 = Enable integer divide.
The ETM clock frequency is determined by dividing the selected reference clock (ref_xtal or ref_cpu) by the
value in this bit field. This field can be programmed with a new value only when CLKGATE = 0.
NOTE: The divider is set to divide by 1 at power-on reset. Do NOT divide by 0.
29
13
1
0
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
HW_CLKCTRL_ETM field descriptions (continued)
28
12
0
0
8004_0000h base + 140h offset = 8004_0140h
27
11
0
0
26
10
0
0
25
0
0
9
DIV_TIME
24
0
RSRVD0
0
8
Description
23
0
0
7
22
0
0
6
21
0
5
0
TIME_SEL
20
1
4
0
Freescale Semiconductor, Inc.
19
0
0
3
18
0
0
2
17
0
0
1
16
0
0
0
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