HD6417615 Hitachi Semiconductor, HD6417615 Datasheet - Page 214

• Manufacturer Part Number: HD6417615
• Description: Hardware Manual
• Manufacturer: Hitachi Semiconductor

196
Figure 5.14 Pipeline Operation when Interrupts are Enabled by Means of SR Modification
Interrupt clear instruction
Synchronization instruction
LDC instruction
Interrupt disable instruction
Normal instruction
On-chip peripheral interrupt
In the above figure, the stage in which the instruction fetch occurs cannot be specified
because of the mix of DSP instructions in this chip, so instruction fetch F is omitted in
most cases during pipeline operation.
•
•
•
D
E
D
Write completed
M
E
M
On-chip peripheral
write, min. 1 Icyc
0.5Icyc + 1.0Pcyc
W
On-chip peripheral
read, min. 1 Icyc
D
Next interrupt can be accepted
E
D
D
E
E