DVP-ES2-EX2-SS2-SA2-SX2-Operation Manual

3. Instruction Set
‣ Table of settings for the high-speed interrupts of the software counters and software
comparators:
Counter C232 C233 C234 C235 C236 C237
DHSCS High-speed I010 I050 I070 I010 I020 I030
interrupt
High-speed comparator C232~C242 share 6 software comparators
Set
Counter C238 C239 C240 C241 C242
DHSCS High-speed
interrupt
High-speed comparator
Set
I040 I050 I060 I070 I080
C232~C242 share 6 software comparators
‣ DVP-SS2/SA2/SE does not support the software high speed counter C232.
‣ C253 and C254 is DVP/SE are software high speed counters. The high-speed interrupt
is I030.
‣ Block diagram of software counters and comparators:
Software
Counter 1
Software
comparatorx 6
Set / reset
1
Software
counter 2
Count value
Set / reset
2
Software
counter 8
Set / reset
6
6. Explanations on hardware comparators DHSCS/DHSCR instruction:
‣ There are 2 groups of hardware comparators provided respectively for 2 groups of
hardware counters (A group and B group), and each group shares 4 comparators with
individual Compare Set/Reset function.
‣ When programming DHSCS and DHSCR instructions, the total of Set/Reset
comparisons for both instructions can not be more than 4, otherwise syntax check error
will occur.
‣ Each high-speed counter interrupt occupies an associated hardware comparator,
consequently the interrupt number can not be repeated. Also, I010~I040 can only be
applied for group A comparators and I050~I080 for group B.
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