Table 2-18. Is Register; Table 2-19. Is Fields; Interrupt Status Register (Is) - Sharp LH79524 User Manual

Analog-to-Digital Converter/Brownout Detector

2.2.2.8 Interrupt Status Register (IS)

IS is the Interrupt Status register. This Read Only register provides the unmasked value
of each interrupt. The BROWNOUT, PENSYNC, and EOS interrupts are latched and must
be cleared by writing to the Interrupt Clear (IC) register. The FWATER and FOVRN inter-
rupts are cleared when the contents of the FIFO no longer exceed their thresholds.
BIT
FIELD
RESET
RW
BIT
FIELD
RESET
RW
ADDR
2-20
31 30 29 28 27
0 0 0 0 0
RO RO RO RO RO
15 14 13 12 11
0 0 0 0 0
RO RO RO RO RO
BIT NAME
31:5 ///
4 BROWNOUT_UM
3 PENSYNC_UM
2 EOS_UM
1 FWATER_UM
0 FOVRN_UM

Table 2-18. IS Register

26 25 24 23
///
0 0 0 0
RO RO RO RO
10 9 8 7
///
0 0 0 0
RO RO RO RO
0xFFFC3000 + 0x1C

Table 2-19. IS Fields

DESCRIPTION
Reserved Reading returns 0. Write the reset value.
Unmasked Brown-Out Interrupt Status
1 = Brown-out Interrupt is active.
0 = Brown-out Interrupt is not active.
Unmasked Pen Interrupt Status
1 = Pen Interrupt is active.
0 = Pen Interrupt is not active.
Unmasked End-of-Sequence Interrupt Active
1 = EOCIA Interrupt is active.
0 = EOCIA Interrupt is not active.
Unmasked FIFO Watermark Interrupt Active
1 = FIFO Watermark Interrupt is active.
0 = FIFO Watermark Interrupt is not active.
Unmasked FIFO Overrun Interrupt Active
1 = FIFO Overrun Interrupt is active.
0 = FIFO Overrun Interrupt is not active.
Version 1.0
LH79524/LH79525 User's Guide
22 21 20 19 18
0 0 0 0 0
RO RO RO RO RO
6 5 4 3 2
0 0 1 0 0
RO RO RO RO RO
17 16
0 0
RO RO
1 0
0 0
RO RO