Functional Overview - Renesas F-ZTAT H8 Series Hardware Manual

8.1.3

Functional Overview

Table 8.1 gives an overview of the DMAC functions.
Table 8.1 DMAC Functional Overview
Transfer Mode
Short I/O mode
address
•
Transfers one byte or one word
mode
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
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
Section 8 DMA Controller
Activation
•
Compare match/
input capture A
interrupts from ITU
channels 0 to 3
•
Transmit-data-empty
interrupt from SCI
channel 0
•
Receive-data-full
interrupt from SCI
channel 0
•
External request
Rev. 7.00 Sep 21, 2005 page 199 of 878
Address
Reg. Length
Source Destination
24 8
8 24
24 8
REJ09B0259-0700