MCF5253VM140J Freescale Semiconductor, MCF5253VM140J Datasheet - Page 616

• 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
24.12.6.2.2 Port Speed Detection
After the port change interrupt indicates that a port is enabled, the EHCI stack should determine the port
speed. Unlike the EHCI implementation which will re-assign the port owner for any device that does not
connect at High-Speed, this host controller supports direct attach of non-HS devices. Therefore, the
following differences are important regarding port speed detection:
24-154
•
•
Port Owner is read-only and always reads 0.
A 2-bit Port Speed indicator in PORTSC register provides the current operating speed of the port
to the host controller driver.
MCF5253 Reference Manual, Rev. 1
Freescale Semiconductor