MCF5253VM140J Freescale Semiconductor, MCF5253VM140J Datasheet - Page 590

• Manufacturer Part Number: MCF5253VM140J
• Description: IC MCU 2.1MIPS 140MHZ 225MAPBGA
• Manufacturer: Freescale Semiconductor
• Series: MCF525xr

Specifications of MCF5253VM140J

• Core Processor: Coldfire V2
• Core Size: 32-Bit
• Speed: 140MHz
• Connectivity: CAN, EBI/EMI, I²C, QSPI, UART/USART, USB OTG
• Peripherals: DMA, WDT
• Program Memory Type: ROMless
• Ram Size: 128K x 8
• Voltage - Supply (vcc/vdd): 1.08 V ~ 1.32 V
• Data Converters: A/D 6x12b
• Oscillator Type: External
• Operating Temperature: -20°C ~ 70°C
• Package / Case: 225-MAPBGA
• Processor Series: MCF525x
• Core: ColdFire V2
• 3rd Party Development Tools: JLINK-CF-BDM26, EWCF
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Number Of I /o: -
• Eeprom Size: -
• Program Memory Size: -
• Lead Free Status / Rohs Status: Details

Universal Serial Bus Interface
It is also not necessary to initially prime Endpoint 0 because the first packet received will always be a setup
packet. The contents of the first setup packet will require a response in accordance with the USB 2.0
Specification, Chapter 9, Device Framework, command set.
24.11.2 Port State and Control
From a chip or system reset, the USB_DR enters the powered state. A transition from the powered state to
the attach state occurs when the Run/Stop bit is set to a '1'. After receiving a reset on the bus, the port will
enter the defaultFS or defaultHS state in accordance with the protocol reset described in Appendix C.2 of
the USB Specification Rev. 2.0. The following state diagram depicts the state of a USB 2.0 device.
24-128
6. Set Run/Stop bit to Run Mode.
Recommended: enable all device interrupts including: USBINT, USBERRINT, Port Change
Detect, USB Reset Received, DCSuspend.
For a list of available interrupts refer to USBINTR register description
USBSTS register description
After the Run bit is set, a device reset will occur. The DCD must monitor the reset event and set
the DEVICEADDR register, set the ENDPTCTRLx registers, and adjust the software state as
described in
Endpoint 0 is designed as a control endpoint only and does not need to be
configured using ENDPTCTRL0 register.
Section 24.11.2.1, “Bus
MCF5253 Reference Manual, Rev. 1
Table
24-16.
Reset.
NOTE
Table 24-17
Freescale Semiconductor
and the