RM0440 Rev 4 637/2126
RM0440 Analog-to-digital converters (ADC)
724
Queue of context: Behavior when a queue overflow occurs
The Figure 101 and Figure 102 show the behavior of the context Queue if an overflow
occurs before or during a conversion.
Figure 101. Example of JSQR queue of context with overflow before conversion
1. Parameters:
P1: sequence of 2 conversions, hardware trigger 1
P2: sequence of 1 conversion, hardware trigger 2
P3: sequence of 3 conversions, hardware trigger 1
P4: sequence of 4 conversions, hardware trigger 1
Figure 102. Example of JSQR queue of context with overflow during conversion
1. Parameters:
P1: sequence of 2 conversions, hardware trigger 1
P2: sequence of 1 conversion, hardware trigger 2
P3: sequence of 3 conversions, hardware trigger 1
P4: sequence of 4 conversions, hardware trigger 1
MS30538V2
JSQR
queue
Write JSQR
P1 P2
EMPTY
Trigger 1
ADC state
Conversion1RDY Conversion2 RDY
P3
JQOVF
Cleared by SW
P1 P1, P2
P4
P2
P2P1EMPTY
P2, P4
=> Overflow,
ignored
JEOS
ADC
J context
(returned by
reading JQSR)
Trigger 2
Conversion1
MS30539V2
JSQR
queue
Write JSQR
P1 P2
EMPTY
Trigger 1
ADC state
Conversion1RDY Conversion2 RDY
P3
JQOVF
Cleared by SW
P1 P1, P2
P4
P2
P2P1EMPTY
P2, P4
=> Overflow,
ignored
JEOS
ADC
J context
(returned by
reading JQSR)
Trigger 2
Conversion1
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