MCIMX281AVM4B Freescale Semiconductor, MCIMX281AVM4B Datasheet - Page 876
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: 876 of 2327
- Download datasheet (17Mb)
Programmable Registers
10.8.16 EMI Clock Control Register (HW_CLKCTRL_EMI)
This register controls the clock dividers that generate the External Memory Interface (EMI)
clock. Note: Do not write register space when busy bit(s) are high.
EXAMPLE
HW_CLKCTRL_EMI_WR(BF_CLKCTRL_EMI_DIV_XTAL(1));
Address:
876
Reset
Reset
SYNC_MODE_
CLKGATE
Bit
Bit
W
W
R
R
RSRVD
Field
30 0
Field
EN
31
30
31
15
1
0
HW_CLKCTRL_EMI
30
14
RSRVD2
0
0
Always set to zero (0).
CLK_EMI crystal divider Gate. If set to 1, the EMI_CLK divider that is sourced by the crystal reference clock,
ref_xtal, is gated off. 0: CLK_EMI crystal divider is not gated
If set to 1, EMI_CLK is synchronous with the APBH clock. If set to 0, EMI_CLK is aysnchronous. In
synchronous operation, the EMI clock dividers control both EMI_CLK and APBH clock. Both xtal and ref_cpu
must be active to switch between asynchronous/synchronous operation.
29
13
0
0
HW_CLKCTRL_SPDIF field descriptions (continued)
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
28
12
0
0
HW_CLKCTRL_EMI field descriptions
8004_0000h base + F0h offset = 8004_00F0h
27
11
0
0
DIV_XTAL
26
10
0
0
25
0
0
9
24
0
1
8
Description
Description
23
RSRVD1
0
0
7
22
RSRVD3
0
0
6
21
0
5
0
20
0
4
0
Freescale Semiconductor, Inc.
19
DIV_EMI
0
0
3
18
0
0
2
17
0
0
1
16
0
1
0
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