HD64F3048VTF8 Datasheet, PDF (229/903 Pages) Renesas Technology Corp – Hardware Manual Renesas 8-Bit Single-Chip

Section 8 DMA Controller
8.1.3 Functional Overview
Table 8.1 gives an overview of the DMAC functions.
Table 8.1 DMAC Functional Overview
Transfer Mode
Short
address
mode
I/O mode
• Transfers one byte or one word
per request
• Increments or decrements the
memory address by 1 or 2
• Executes 1 to 65,536 transfers
Idle mode
• Transfers one byte or one word
per request
• Holds the memory address fixed
• Executes 1 to 65,536 transfers
Address
Reg. Length
Activation
Source Destination
• Compare match/ 24
8
input capture A
interrupts from ITU
channels 0 to 3
• Transmit-data-empty
interrupt from SCI
channel 0
• Receive-data-full 8
24
interrupt from SCI
channel 0
• External request 24
8
Repeat mode
• Transfers one byte or one word per
request
• Increments or decrements the
memory address by 1 or 2
• Executes a specified number (1 to
255) of transfers, then returns to
the initial state and continues
Rev. 3.00 Sep 27, 2006 page 201 of 872
REJ09B0325-0300