Datasheet

Section 8 EXDMA Controller
Rev. 3.00 Mar 17, 2006 page 368 of 926
REJ09B0283-0300
Channel 0 Channel 0 Channel 0 Channel 1 Channel 1
Bus
Conditions (1)
Channel 0: Auto request, cycle steal mode
Channel 1: External request, cycle steal mode, low level activation
Channel 0
EDA bit
Channel 1/
EDREQ1 pin
Channel 2 Channel 2 Channel 1 Channel 1Channel 2 Channel 1
Bus
Conditions (2)
Channel 1: External request, cycle steal mode, low level activation
Channel 2: Auto request, cycle steal mode
Channel 1/
EDREQ1 pin
Channel 2
EDA bit
Channel 2 Channel 2 Channel 0 Channel 2Channel 0
Bus
Conditions (3)
Channel 0: Auto request, cycle steal mode
Channel 2: Auto request, cycle steal mode
Note:
*
: Bus release
Channel 0
EDA bit
Channel 2
EDA bit
*
*
**** *
*** *
** * *
Figure 8.14 Examples of Channel Priority Timing