MCIMX286CVM4B Freescale Semiconductor, MCIMX286CVM4B Datasheet - Page 923

• Manufacturer Part Number: MCIMX286CVM4B
• Description: IC MPU I.MX286 289MAPBGA
• Manufacturer: Freescale Semiconductor
• Series: i.MX28r

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

11.12.6 VDDA Supply Targets and Brownouts Control Register
This register controls the voltage targets and brownout targets for the VDDA supply
generated from the switching DC-DC converter and integrated linear regulators. The
brownout comparators default enabled.
Address:
Freescale Semiconductor, Inc.
Reset
Reset
PWDN_BRNOUT
STEPPING
DISABLE_
Bit
Bit
ENABLE_
W
W
RSRVD4
R
R
LINREG
31 20
Field
19
18
17
31
15
RSRVD3
0
0
HW_POWER_VDDACTRL 8004_4000h base + 50h offset = 8004_4050h
(HW_POWER_VDDACTRL)
30
14
0
0
Reserved.
Powers down the device after the DC-DC converter completes startup if a VDDA brownout occurs. This
function is only active when 5V is not present. Additionally, software should clear this bit and disable this
function after the system is configured for a VDDA brownout and the VDDA brownout interrupt is enabled.
Disables the default behavior of the voltage stepping algorithm when the TRG field is updated. By default,
the control loop steps sequentially through 25mV steps on both target and brownout voltage to minimize
transients during TRG adjustments.
When this bit is set, the entire target voltage and brownout adjustment takes place at one time, which will
speed transitions, but will result in increased supply transients as well as possible brownouts when the new
(TRG - BO_OFFSET) >= old TRG.Thus, it is recommended to change TRG by less than the (BO_OFFSET-2)
value when using DISABLE_STEPPING.This bit should be set high when powering VDDA from the integrated
linear regulators.
Enables the VDDA linear regulator converter when the switching converter is active. By default, the linear
regulator is not active when the switching converter is active.
LINREG_
29
13
OFFSET
0
1
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
HW_POWER_VDDACTRL field descriptions
28
12
0
0
27
11
0
0
26
10
RSRVD4
0
1
BO_OFFSET
25
0
1
9
24
0
1
8
Description
23
0
0
7
RSRVD1
22
0
0
6
21
0
5
0
20
0
4
0
Chapter 11 Power Supply
19
0
1
3
TRG
18
0
1
2
17
0
0
1
16
0
0
0
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