MCIMX281AVM4B Freescale Semiconductor, MCIMX281AVM4B Datasheet - Page 1962

• 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

USB Controller Flowcharts
sync, EOP, and bit-stuffing generation and data integrity. The analog loopback is the same
as the digital loopback, but involves the analog PHY. This allows for checking of the
high-speed (HS) and full-speed (FS) comparators and transmitters.
31.6 USB Controller Flowcharts
1962
Figure 31-2. USB 2.0 Check_USB_Plugged_In Flowchart
i.MX28 Applications Processor Reference Manual, Rev. 1, 2010
Set HW_USBPHY_CTRL_ENDEVPLUGINDETECT
Set HW_USBPHY_DEBUG_ENHSTPULLDOWN
Clear HW_USBPHY_DEBUG_HSTPULLDOWN
NO
NO
Wait for 1 microsecond
STATUS_DEVPLUGIN
HW_USBPHY_CTRL_
HW_POWER_STS_
VDD5V_GT_VDDIO
HW_USBPHY_
Play_Startup
_STATUS
SFTRST
DONE
Start
YES
Check for 5-V input
Freescale Semiconductor, Inc.