MPC8536E-ANDROID Freescale Semiconductor, MPC8536E-ANDROID Datasheet - Page 1451

• Manufacturer Part Number: MPC8536E-ANDROID
• Description: HARDWARE/SOFTWARE ANDROID OS
• Manufacturer: Freescale Semiconductor
• Series: PowerQUICC ™r
• Type: MPUr

Specifications of MPC8536E-ANDROID

• Contents: Board
• For Use With/related Products: MPC8536
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The USB module includes DCD software called the USB 2.0 Device API. The device API provides an
easy to use Application Program Interface for developing device (peripheral) applications. The device API
incorporates and abstracts for the application developer all of the elements of the program interface.
21.7.1
The device Endpoint Queue Head (dQH) is where all transfers are managed. The dQH is a 48-byte data
structure, but must be aligned on 64-byte boundaries. During priming of an endpoint, the dTD (device
transfer descriptor) is copied into the overlay area of the dQH, which starts at the nextTD pointer DWord
and continues through the end of the buffer pointers DWords. After a transfer is complete, the dTD status
DWord is updated in the dTD pointed to by the currentTD pointer. While a packet is in progress, the
overlay area of the dQH is used as a staging area for the dTD so that the Device Controller can access
needed information with little minimal latency.
Freescale Semiconductor
ENDPOINTLISTADDR
32 Elements
Endpoint Queue Head
Up to
MPC8536E PowerQUICC III Integrated Processor Reference Manual, Rev. 1
Figure 21-59. End Point Queue Head Organization
Endpoint QH 1—Out
Endpoint QH 0—Out
Endpoint QH 0—In
Endpoint Queue Heads
•
•
•
Transfer
Pointer
Buffer
Transfer Buffer Pointer
Endpoint Transfer Descriptor
Transfer Buffer Pointer
Transfer
Buffer
Transfer
Universal Serial Bus Interfaces
Buffer
Transfer Buffer Pointer
Transfer
Transfer
Buffer
Buffer
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