MCIMX286CVM4B Freescale Semiconductor, MCIMX286CVM4B Datasheet - Page 867
MCIMX286CVM4B
Manufacturer Part Number
MCIMX286CVM4B
Description
IC MPU I.MX286 289MAPBGA
Manufacturer
Freescale Semiconductor
Series
i.MX28r
Datasheets
1.MCIMX283DVM4B.pdf
(70 pages)
2.MCIMX283DVM4B.pdf
(2 pages)
3.MCIMX283DVM4B.pdf
(2327 pages)
4.MCIMX283DVM4B.pdf
(20 pages)
Specifications of MCIMX286CVM4B
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
Compliant
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10.8.8 APBX Clock Control Register (HW_CLKCTRL_XBUS)
This register controls the clock divider that generates the CLK_X, the clock used by the
APBX bus. Note: Do not write register space when busy bit(s) are high.
EXAMPLE
HW_CLKCTRL_XBUS_WR(BF_CLKCTRL_XBUS_DIV(4)); // set apbx xbus clock to 1/4 the 24.0MHz crystal
Address:
Freescale Semiconductor, Inc.
Reset
Reset
clock frequency
AUTO_CLEAR_
DIV_FRAC_EN
DIV_ENABLE
Bit
Bit
W
W
RSRVD1
R
R
30 12
BUSY
Field
Field
4 0
DIV
BUSY
31
11
5
31
15
0
0
RSRVD1[15:12]
HW_CLKCTRL_XBUS
30
14
0
0
1 = Enable fractional divide. 0 = Enable integer divide.
CLK_P-to-CLK_H divide ratio.
NOTE: The divider is set to divide by 1 at power-on reset. Do NOT divide by 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).
If this bit is set to one (1'b1), HW_CLKCTRL_XBUS_DIV is cleared to 1 automaticlly without S/W interaction
when wakeup interrupt event happens. This feature is to accelerate the waking up from Wait-For-Interrupt
Mode.
Note: This bit is not self-cleared. This feature is supposed to used when the clk_x is reduced to very low
frequency, for example, 24KHz.
29
13
0
0
HW_CLKCTRL_HBUS field descriptions (continued)
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
28
12
0
0
HW_CLKCTRL_XBUS field descriptions
8004_0000h base + 70h offset = 8004_0070h
27
11
0
0
26
10
0
0
25
0
0
9
24
0
1
RSRVD1[30:16]
8
Description
Description
Chapter 10 Clock Generation and Control (CLKCTRL)
23
0
0
7
22
0
0
6
21
0
5
0
DIV
20
0
4
0
19
0
0
3
18
0
0
2
17
0
0
1
16
0
0
0
867
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