Datasheet

Section 8 DMA Controller (DMAC)
(This function is not available in the H8S/2695)
R01UH0166EJ0600 Rev. 6.00 Page 257 of 1434
Mar 02, 2011
H8S/2633 Group, H8S/2633 F-ZTAT
TM
,
H8S/2633R F-ZTAT
TM
, H8S/2695
(2) Repeat Mode
Transfer Number Storage
Bit : 15 14 13 12 11 10 9 8
ETCRH :
Initial value : * * * * * * * *
R/W : R/W R/W R/W R/W R/W R/W R/W R/W
Transfer Counter
Bit : 7 6 5 4 3 2 1 0
ETCRL :
Initial value : * * * * * * * *
R/W : R/W R/W R/W R/W R/W R/W R/W R/W
*: Undefined
In repeat mode, ETCR functions as transfer counter ETCRL (with a count range of 1 to 256) and
transfer number storage register ETCRH. ETCRL is decremented by 1 each time a transfer is
performed, and when the count reaches H'00, ETCRL is loaded with the value in ETCRH. At this
point, MAR is automatically restored to the value it had when the count was started. The DTE bit
in DMABCR is not cleared, and so transfers can be performed repeatedly until the DTE bit is
cleared by the user.
ETCR is not initialized by a reset or in standby mode.