Datasheet

Section 7 Data Transfer Controller [H8S/2138 Group]
Rev. 4.00 Jun 06, 2006 page 182 of 1004
REJ09B0301-0400
Read Write Read Write
Address
φ
DTC activation
request
DTC
request
Data transfer Data transfer
Transfer
information
write
Transfer
information
write
Transfer
information
read
Transfer
information
read
Vector read
Figure 7.12 DTC Operation Timing (Chain Transfer)
7.3.10 Number of DTC Execution States
Table 7.8 lists execution phases for a single DTC data transfer, and table 7.9 shows the number of
states required for each execution phase.
Table 7.8 DTC Execution Phases
Mode
Vector Read
I
Register Information
Read/Write
J
Data Read
K
Data Write
L
Internal
Operation
M
Normal 1 6 1 1 3
Repeat 1 6 1 1 3
Block transfer 1 6 N N 3
N: Block size (initial setting of CRAH and CRAL)