Table 5.7 Cpu Priority Control; Table 5.8 Example Of Priority Control Function Setting And Control State - Renesas H8SX/1500 Series Hardware Manual

32-bit cisc microcomputer
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Table 5.7
CPU Priority Control
Interrupt
Control
Interrupt
Mode
Priority
0
Default
2
IPR setting
Table 5.8 shows an setting example of the priority control function over the DMAC and the
transfer request control state. Although the DMAC priority levels can be assigned for each
channel, table 5.8 gives a single channel description. Thus, transfer for each channel can be
performed independently by assigning the different priority levels.
Table 5.8
Example of Priority Control Function Setting and Control State
Interrupt Control
CPUPCE in
Mode
CPUPCR
0
0
1
2
0
1
Interrupt
IPSETE in
Mask Bit
CPUPCR
I = any
0
I = 0
1
I = 1
I2 to I0
0
1
CPUP2 to
CPUP0
Any
B'000
B'100
B'100
B'100
B'000
Any
B'000
B'000
B'011
B'100
B'101
B'110
B'111
B'101
B'101
Control Status
CPUP2 to CPUP0
B'111 to B'000
B'000
B'100
B'111 to B'000
I2 to I0
Transfer Request Control State
DMAP2 to
DMAP0
DMAC
Any
Enabled
B'000
Enabled
B'000
Masked
B'011
Masked
B'101
Enabled
B'101
Enabled
Any
Enabled
B'000
Enabled
B'101
Enabled
B'101
Enabled
B'101
Enabled
B'101
Enabled
B'101
Masked
B'101
Masked
B'101
Enabled
B'101
Enabled
Rev. 3.00 Mar. 14, 2006 Page 121 of 804
Section 5 Interrupt Controller
Updating of CPUP2
to CPUP0
Enabled
Disabled
Enabled
Disabled
REJ09B0104-0300

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