Stopping Due To An Error - Fujitsu FR60 Hardware Manual

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Stopping Due To an Error

In addition to normal end after transfer for the number of times specified, stopping as

the result of various types of errors and the forced stopping are provided.

■ Transfer Stop Requests from Peripheral Circuits

Depending on the peripheral circuit that outputs a transfer request, a transfer stop request is issued when an

error is detected (Example: Error when data is received at or sent from a communications system

peripheral).

The DMAC, when it receives such a transfer stop request, displays "Transfer stop request" as the end code

and stops the transfer on the corresponding channel.

* For details of the conditions under which a transfer stop request is generated, see the specifications for

each peripheral circuit.

■ Occurrence of an Address Error

Inappropriate addressing occurring in an addressing mode is detected as an address error. An example of

inappropriate addressing is an overflow or underflow that occurs in the address counter when a 32-bit

address is specified.

If an address error is detected, "An address error occurred" is displayed as the end code and transfer on the

corresponding channel is stopped.

External pin "L" level or

UART0 (Reception completed)

UART2 (Reception completed)

UART0 (Transmission completed)

Transfer stop request

Mb91350a series