Rev.6.00 Oct.28.2004 page 261
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REJ09B0138-0600H
Read Write
Read Write
Address
ø
DTC activation
request
DTC
request
Data transfer
Data transfer
Transfer
information
write
Transfer
information
write
Transfer
information
read
Transfer
information
read
Vector read
Figure 8-12 DTC Operation Timing (Example of Chain Transfer)
8.3.10
Number of DTC Execution States
Table 8-8 lists execution statuses for a single DTC data transfer, and table 8-9 shows the number of states required for
each execution status.
Table 8-8
DTC Execution Statuses
Mode
Vector Read
I
Register Information
Read/Write
J
Data Read
K
Data Write
L
Internal
Operations
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)
Table 8-9
Number of States Required for Each Execution Status
Object to be Accessed
On-
Chip
RAM
On-
Chip
ROM
On-Chip I/O
Registers
External Devices
Bus width
32
16
8
16
8
16
Access states
1
1
2
2
2
3
2
3
Execution
Vector read
S
I
—
1
—
—
4
6+2m 2
3+m
status
Register
information
read/write
S
J
1
—
—
—
—
—
—
—
Byte data read
S
K
1
1
2
2
2
3+m
2
3+m
Word data read
S
K
1
1
4
2
4
6+2m 2
3+m
Byte data write
S
L
1
1
2
2
2
3+m
2
3+m
Word data write
S
L
1
1
4
2
4
6+2m 2
3+m
Internal operation S
M
1
Содержание ZTAT H8S/2357F
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