MCIMX281AVM4B Freescale Semiconductor, MCIMX281AVM4B Datasheet - Page 868
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: 868 of 2327
- Download datasheet (17Mb)
Programmable Registers
10.8.9 XTAL Clock Control Register (HW_CLKCTRL_XTAL)
The XTAL control register provides gating control for clocks sourced from the 24-MHz
XTAL clock domain.
HW_CLKCTRL_XTAL: 0x080
HW_CLKCTRL_XTAL_SET: 0x084
HW_CLKCTRL_XTAL_CLR: 0x088
HW_CLKCTRL_XTAL_TOG: 0x08C
This register controls various fixed-rate divider clocks working off the 24.0-MHz crystal
clock.
EXAMPLE
HW_CLKCTRL_XTAL_WR(BF_CLKCTRL_XTAL_UART_CLK_GATE(0)|BF_CLKCTRL_XTAL_DRI_CLK24M_GATE(1));
Address:
868
Reset
Reset
DIV_FRAC_EN
Bit
Bit
W
W
R
R
Field
9 0
DIV
10
31
15
0
0
HW_CLKCTRL_XTAL
30
14
1
0
1 = Enable fractional divide. 0 = Enable integer divide.
This field controls the CLK_X divide ratio. CLK_X is sourced from the 24-MHz XTAL through this divider.
Do NOT divide by 0.
29
13
1
0
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
HW_CLKCTRL_XBUS field descriptions (continued)
28
12
RSRVD2
0
0
8004_0000h base + 80h offset = 8004_0080h
27
11
0
0
26
10
0
0
RSRVD1[15:2]
25
0
0
9
24
0
0
8
Description
23
0
0
7
22
0
0
6
RSRVD1[25:16]
21
0
5
0
20
0
4
0
Freescale Semiconductor, Inc.
19
0
0
3
18
0
0
2
DIV_UART
17
0
0
1
16
0
1
0
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