MCIMX286CVM4B Freescale Semiconductor, MCIMX286CVM4B Datasheet - Page 928

• 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

Programmable Registers
928
Reset
ENABLE_DCDC
HYST_THRESH
ENABLE_4P2
DROPOUT_
HYST_DIR
Bit
W
RSRVD5
ISTEAL_
THRESH
RSRVD3
R
31 28
27 26
25 24
18 16
CTRL
Field
TRG
23
22
21
20
19
15
0
RSRVD2
14
0
Adjusts the behavior of the dcdc converter and 4.2V regulation circuit. The two msbs control the VDD4P2
brownout below the target set by DCDC4p2_trg before the regulation circuit steals battery charge current
to support the voltage on VDD4P2. The two lsbs control which power source is selected by the dcdc converter
after ENABLE_DCDC is set.
0b11XX: 200mV
0b10XX: 100mV
0b01XX: 50mV
0b00XX: 25mV
0bXX00: DcDc Converter power source is DCDC_4P2 regardless of BATTERY voltage
0bXX01: DcDc converter uses DCDC_4P2 always, and only enables DCDC_BATT when VDD4P2 is less
than BATTERY.
0bXX1X: DcDc converter selects either VDD4P2 or BATTERY, which ever is higher.
Reserved.
Has no effect.
Enables the DCDC_4P2 regulation circuitry. The 4p2V load current has priority over the battery charge
current when the sum of the two tries to exceed the limit set with CHARGE_4P2_ILIMIT.
Enable the dcdc converter to use the DCDC_4P2 pin as a power source based on a voltage comparison
between the BATTERY pin voltage and the VDD4P2 pin voltage. The trip point of this comparator is controlled
by the CMPTRIP bitfield.
Enable hysteresis in analog comparator.
Increase the threshold detection for DCDC_4P2/BATTERY analog comparator.
Reserved.
Regulation voltage of the DCDC_4P2 pin.
0b000 : 4.2V
0b001 : 4.1V
0b010 : 4.0V
13
0
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
12
0
HW_POWER_DCDC4P2 field descriptions
11
0
BO
10
0
0
9
0
8
Description
0
7
RSRVD1
0
6
5
0
4
1
Freescale Semiconductor, Inc.
1
3
CMPTRIP
0
2
0
1
0
0