TMPR3916 datasheet(117/225 Pages) TOSHIBA

Part #	TMPR3916

Description	32-Bit TX System RISC TX39 Family TMPR3916

PDF	225 Pages

Scroll/Zoom	100%

Manufacturer	TOSHIBA [Toshiba Semiconductor]

Direct Link	http://www.semicon.toshiba.co.jp/eng

Logo

117 / 225 page

Chapter 6 Direct Memory Access Controller (DMAC)

Preliminary

6-4

6.1.3

Potential Problems

One of the following reasons can be responsible for an error:

•

The software has made invalid settings in the Operation Definition Register (ODR) or in the

Channel Control Register (CCR).

•

The software has defined an address in the Source or Destination Address Register (SAR or DAR)

that does not exist. The access to this address has caused a bus error.

•

Either the byte count, the source address or the destination address is not correctly aligned.

The DMA Controller sends an interrupt, when an error occurs.

These steps need to be executed in case of an error:

Read the contents of the Channel Error Register (CER) to get the cause of the error.

For details see the register description.

Write 0x80 into the Channel Control Register (CCR).

Write 0x00 into the Channel Status Register (CSR).

Start the whole DMA programming procedure from the first point.

TMPR3916 Datasheet(PDF) 117 Page - Toshiba Semiconductor