Datasheet

Section 8 EXDMA Controller
Rev. 3.00 Mar 17, 2006 page 342 of 926
REJ09B0283-0300
Bit Bit Name Initial Value R/W Description
14 BEF 0 R/(W)
*
Block Transfer Error Flag
Flag that indicates the occurrence of an error
during block transfer. If an NMI interrupt is
generated during block transfer, the EXDMAC
immediately terminates the EXDMA operation
and sets this bit to 1. The address registers
indicate the next transfer addresses, but the
data for which transfer has been performed
within the block size is lost.
0: No block transfer error
[Clearing condition]
Writing 0 to BEF after reading BEF = 1
1: Block transfer error
[Setting condition]
NMI interrupt during block transfer
13 EDRAKE 0 R/W EDRAK Pin Output Enable
Enables output from the EDREQ
acknowledge/execution start (EDRAK) pin.
0: EDRAK pin output disabled
1: EDRAK pin output enabled
12 ETENDE 0 R/W ETEND Pin Output Enable
Enables output from the EXDMA transfer end
(ETEND) pin.
0: ETEND pin output disabled
1: ETEND pin output enabled
11 EDREQS 0 R/W EDREQ Select
Specifies low level sensing or falling edge
sensing as the sampling method for the
EDREQ pin used in external request mode.
0: Low level sensing (Low level sensing is used
for the first transfer after transfer is enabled.)
1: Falling edge sensing