MCIMX286CVM4B Freescale Semiconductor, MCIMX286CVM4B Datasheet - Page 926

• 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
11.12.8 VDDMEM Supply Targets Control Register
This register controls the voltage target for a memory supply generated from VDDA. This
supply is intended for use with external memories such as LV-DDR that have unique voltage
requirements not compatible with VDDIO, VDDA , or VDDD.
Address:
926
Reset
BO_OFFSET
Bit
W
RSRVD2
RSRVD1
R
Field
10 8
TRG
7 5
4 0
11
31
0
HW_POWER_VDDMEMCTRL
4070h
(HW_POWER_VDDMEMCTRL)
30
0
00b = 0 steps, recommended when powering VDDIO from linear regulator and
ENABLE_DCDC=DCDC_XFER=0. It is also recommended to set DISABLE_STEPPING when powering
VDDIO from the linear regulators.
01b = 1 step above.
10b = 1 step below (default), important when powering VDDIO from DC-DC converter and linear regulator
simultaneously.
11b = 2 steps below.
Reserved.
Brownout voltage offset in 50 mV steps below the TRG value. Note that the hardware only supports brownout
voltages between 2.7V and 3.475V, and values outside this range should not be programmed. The brownout
trip voltage will adjust as the target voltage changes.
Reserved.
Voltage level of the VDDIO supply. The step size of this field is 50 mV. 0x00 = 2.8 V and the reset value =
3.1 V. Note that the maximum programmable voltage is 3.6V, therefore code values of 0x10 to 0x1F all map
to 3.6 V. It is also recommended to set DISABLE_STEPPING when powering VDDIO from the integrated
linear regulators. Setting DISABLE_STEPPING does set additional restrictions on TRG adjusments.
HW_POWER_VDDIOCTRL field descriptions (continued)
29
0
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
28
0
27
0
26
0
8004_4000h base + 70h offset = 8004_
25
0
RSRVD2[31:16]
24
0
Description
23
0
22
0
21
0
20
0
Freescale Semiconductor, Inc.
19
0
18
0
17
0
16
0