Datasheet

Section 6 Bus Controller (BSC)
R01UH0309EJ0500 Rev. 5.00 Page 177 of 1408
Sep 24, 2012
H8S/2456, H8S/2456R, H8S/2454 Group
Bit Bit Name Initial Value R/W Description
4 EDDS 0 R/W EXDMAC Single Address Transfer Option
Selects whether full access is always performed or
burst access is enabled when EXDMAC single
address transfer is performed on the
DRAM/synchronous DRAM.
When the BE bit is cleared to 0 in DRAMCR,
disabling DRAM/synchronous DRAM burst
access, EXDMAC single address transfer is
performed in full access mode regardless of the
setting of this bit.
This bit has no effect on other bus master external
accesses or EXDMAC dual address transfers.
0: Full access is always executed
1: Burst access is enabled
3 ⎯ 0 R/W Reserved
This bit can be read from or written to. However,
the write value should always be 0.