MCIMX281AVM4B Freescale Semiconductor, MCIMX281AVM4B Datasheet - Page 932

• Manufacturer Part Number: MCIMX281AVM4B
• Description: IC MPU I.MX28 1.2 289MAPBGA
• Manufacturer: Freescale Semiconductor
• Series: i.MX28r

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

Programmable Registers
Address:
932
Reset
Reset
EN_CM_HYST
EN_RCSCALE
EN_DF_HYST
TOGGLE_DIF
HYST_SIGN
CM_HYST_
RCSCALE_
DF_HYST_
Bit
Bit
W
W
RSRVD3
THRESH
THRESH
THRESH
R
R
31 21
13 12
Field
20
19
18
17
16
15
14
31
15
0
0
HW_POWER_LOOPCTRL 8004_4000h base + B0h offset = 8004_40B0h
30
14
0
0
Reserved.
Set high to enable supply stepping to change only after the differential control loop has toggled as well. This
should eliminate any chance of large transients when supply voltage changes are made.
Invert the sign of the hysteresis in DC-DC analog comparators. This bit should set when using PFM mode.
Enable hysteresis in switching converter common mode analog comparator.This feature will improve transient
supply ripple and efficiency.
Enable hysteresis in switching converter differential mode analog comparators. This feature will improve
transient supply ripple and efficiency.
Increase the threshold detection for common mode analog comparator.
Increase the threshold detection for common mode analog comparator.
Increase the threshold detection for RC scale circuit.
Enable analog circuit of DC-DC converter to respond faster under transient load conditions.
00: disabled
01: 2X increase
10: 4X increase
29
13
0
0
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
HW_POWER_LOOPCTRL field descriptions
28
12
0
0
27
11
0
0
RSRVD3
26
10
0
0
DC_FF
25
0
0
9
24
0
0
8
Description
23
0
0
7
22
0
0
6
DC_R
21
0
5
1
20
0
4
0
Freescale Semiconductor, Inc.
19
RSRVD1
0
0
3
18
0
0
2
17
0
0
1
DC_C
16
0
1
0