HD64F3048F16 Datasheet, PDF (240/903 Pages) Renesas Technology Corp – Old Company Name in Catalogs and Other Documents

Section 8 DMA Controller
8.3.3 Execute Transfer Count Registers (ETCR)
An execute transfer count register (ETCR) is a 16-bit readable/writable register that specifies the
number of transfers to be executed. The functions of these registers differ between normal mode
and block transfer mode.
Normal mode
ETCRA:
Bit
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
Initial value
Read/Write
Undetermined
R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W R/W
Block transfer counter
ETCRB: Is not used in normal mode.
In normal mode ETCRA functions as a 16-bit transfer counter. The count is decremented by 1
each time one transfer is executed. The transfer ends when the count reaches H'0000. ETCRB is
not used.
Rev. 3.00 Sep 27, 2006 page 212 of 872
REJ09B0325-0300