MC9328MXLVM20R2 Freescale Semiconductor, MC9328MXLVM20R2 Datasheet - Page 72

• Manufacturer Part Number: MC9328MXLVM20R2
• Description: IC MCU I.MX 200MHZ 256-MAPBGA
• Manufacturer: Freescale Semiconductor
• Series: i.MXLr

Specifications of MC9328MXLVM20R2

• Core Processor: ARM9
• Core Size: 32-Bit
• Speed: 200MHz
• Connectivity: EBI/EMI, I²C, Memory Stick, MMC/SD, SPI, SSI, UART/USART, USB
• Peripherals: DMA, I²S, LCD, POR, PWM, WDT
• Number Of I /o: 97
• Program Memory Type: ROMless
• Voltage - Supply (vcc/vdd): 1.7 V ~ 3.3 V
• Oscillator Type: External
• Operating Temperature: 0°C ~ 70°C
• Package / Case: 256-MAPBGA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Eeprom Size: -
• Ram Size: -
• Program Memory Size: -
• Data Converters: -

Functional Description and Application Information
4.11
Four types of data transfer modes exist for the USB module: control transfers, bulk transfers, isochronous
transfers, and interrupt transfers. From the perspective of the USB module, the interrupt transfer type is
identical to the bulk data transfer mode, and no additional hardware is supplied to support it. This section
covers the transfer modes and how they work from the ground up.
Data moves across the USB in packets. Groups of packets are combined to form data transfers. The same
packet transfer mechanism applies to bulk, interrupt, and control transfers. Isochronous data is also moved
in the form of packets, however, because isochronous pipes are given a fixed portion of the USB
bandwidth at all times, there is no end-of-transfer.
72
SDCLK
USB Device Port
ADDR
DQM
RAS
CAS
CKE
WE
DQ
CS
BA
Figure 55. SDRAM Self-Refresh Cycle Timing Diagram
MC9328MXL Technical Data, Rev. 8
Freescale Semiconductor