Datasheet

PRDEQ
Clear
Set
Latch
CEVT1
ECFRC
ECCLR
ECFLG
ECEINT
ECCLR
ECEINT Set
Clear
Latch
CEVT2
ECFRC
ECFLG
ECCLR
ECCLR
Clear
ECEINT
Latch
Set
ECFLG
ECEINT Set
Clear
Latch
ECFRC
CEVT4
CEVT3
ECFRC
ECFLG
ECFRC
ECCLR
ECEINT Set
ECEINT
ECFLG
Latch
Clear
Latch
Set
CMPEQ
ECFRC
ECCLR
ECCLRClear
ECFLG
ECEINT
Clear
Latch
Set
ECFRC
CTROVF
ECFLG
01
0
Generate
interrupt
pulse when
input=1
Latch
Clear
Set
ECCLR
ECAPxINT
ECFLG
www.ti.com Basic Operation
Note: The CEVT1, CEVT2, CEVT3, CEVT4 flags are only active in capture mode (ECCTL2[CAP_APWM
== 0]). The CTR_PRD and CTR_CMP flags are only valid in APWM mode (ECCTL2[CAP_APWM == 1]).
CNTOVF flag is valid in both modes.
Figure 32-7. Interrupts in eCAP Module
32.2.2.7 Shadow Load and Lockout Control
In capture mode, this logic inhibits (locks out) any shadow loading of CAP1 or CAP2 from APRD and
ACMP registers, respectively.
In APWM mode, shadow loading is active and two choices are permitted:
• Immediate - APRD or ACMP are transferred to CAP1 or CAP2 immediately upon writing a new value.
• On period equal, CTR[31:0] = PRD[31:0]
1651
SPNU562–May 2014 Enhanced Capture (eCAP) Module
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