M16C80 Datasheet, PDF (95/358 Pages) Renesas Technology Corp – RENESAS 16-BIT SINGLE-CHIP MICROCOMPUTER M16C FAMILY / M16C/80 SERIES

M16C/80 Group
11. DMAC
DMAi transfer count register (i = 0 to 3)
(CPU internal register)
b15
b0
Symbol
DCT0
DCT1
DCT2 (bank 1;R0) (Note 1)
DCT3 (bank 1;R1) (Note 1)
When reset
XXXX16
XXXX16
000016
000016
Function
• Transfer counter
Set transfer number
Transfer count
specification
000016 to FFFF16
RW
Note 1: When setting DCT2 and DCT3, set "1" to the register bank select
flag (B flag) of flag register (FLG), and then set desired value to R0
and R1 of register bank 1.
Note 2: When "0" is set to this register, data transfer is not done even if DMA
is requested.
DMAi transfer count reload register (i = 0 to 3)
(CPU internal register)
b15
b0
Symbol
DRC0
DRC1
DRC2 (bank 1;R2) (Note 1)
DRC3 (bank 1;R3) (Note 1)
When reset
XXXX16
XXXX16
000016
000016
Function
• Transfer count register reload value
Set transfer number
Transfer count
specification
000016 to FFFF16
RW
Note: When setting DRC2 and DRC3, set "1" to the register bank select flag
(B flag) of flag register (FLG), and then set desired value to R2 and
R3 of register bank 1.
Figure 11.4 DMAC register (3)
Rev.1.00 Aug. 02, 2005 ^{Page 84} of 329
REJ09B0187-0100