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eQEP Registers
33.3.16 eQEP Interrupt Flag Register (QFLG)
Figure 33-36. eQEP Interrupt Flag Register (QFLG) [offset = 32h]
15 12 11 10 9 8
Reserved UTO IEL SEL PCM
R-0 R-0 R-0 R-0 R-0
7 6 5 4 3 2 1 0
PCR PCO PCU WTO QDC PHE PCE INT
R-0 R-0 R-0 R-0 R-0 R-0 R-0 R-0
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Table 33-19. eQEP Interrupt Flag Register (QFLG) Field Descriptions
Bits Name Value Description
15-12 Reserved 0 Always read as 0
11 UTO Unit time out interrupt flag
0 No interrupt generated
1 Set by eQEP unit timer period match
10 IEL Index event latch interrupt flag
0 No interrupt generated
1 Set after latching the QPOSCNT to QPOSILAT
9 SEL Strobe event latch interrupt flag
0 No interrupt generated
1 Set after latching the QPOSCNT to QPOSSLAT
8 PCM Position-compare match interrupt flag
0 No interrupt generated
1 Set on position-compare match
7 PCR Position-compare ready interrupt flag
0 No interrupt generated
1 Set after transferring the shadow register value to the active position compare register.
6 PCO Position counter overflow interrupt flag
0 No interrupt generated
1 Set on position counter overflow.
5 PCU Position counter underflow interrupt flag
0 No interrupt generated
1 Set on position counter underflow.
4 WTO Watchdog time out interrupt flag
0 No interrupt generated
1 Set by watch dog timeout
3 QDC Quadrature direction change interrupt flag
0 No interrupt generated
1 Set during change of direction
2 PHE Quadrature phase error interrupt flag
0 No interrupt generated
1 Set on simultaneous transition of QEPA and QEPB
1 PCE Position counter error interrupt flag
0 No interrupt generated
1 Position counter error
0 INT Global interrupt status flag
0 No interrupt generated
1 Interrupt was generated
1705
SPNU562May 2014 Enhanced QEP (eQEP) Module
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