BMSKTOPASA900(DCE) Toshiba, BMSKTOPASA900(DCE) Datasheet - Page 125

• Manufacturer Part Number: BMSKTOPASA900(DCE)
• Description: KIT STARTER TMPA900 USB JTAG
• Manufacturer: Toshiba
• Series: TOPASr
• Type: MCUr

Specifications of BMSKTOPASA900(DCE)

• Contents: Evaluation Board, Cable(s), Software and Documentation
• For Use With/related Products: TMPA900CMXBG
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

3.8.4
1) Scatter/gather function
interrupt enable bit of the DMACCxControl register. If enabled, additional operations (e.g.
adding conditions, branch etc.) during transfer using linked lists can be executed. An
interrupt can be cleared by configuring the corresponding bit of the DMACIntTCClear
register.
CPU by allowing the transfer settings (source address, destination address, transfer count,
transfer bus width) to be re-loaded each time a specified number of DMA transfers have
been completed. This is done by using the linked lists (LLI)..
Special Function
consecutive data. The addresses of the image data to be transferred are scattered
according to specific rule. Since DMA can only transfer data to consecutive addresses, the
transfer settings must be reconfigured each time a gap occurs in the sequence of transfer
addresses.
When a part of image data is cut off and transferred, the image data is not be handled as
The scatter/gather function enables a continuous DMA operation without involving the
The scatter/gather function is controlled by setting the DMACCxLLI register to 1.
A linked list includes information comprised of the following four words:
It is also possible to generate interrups in conjunction with the scatter/gather function.
An interrupt can be generated after each LLI operation by setting the terminal count
1) DMACCxSrcAddr
2) DMACCxDestAddr
3) DMACCxLLI
4) DMACCxControl
Screen image
image is cut out.
A part of screen
TENTATIVE
TMPA900CM- 124
Screen data
Addresses are not
continuous.
TMPA900CM
2009-10-14