Sharp LH79524 - Interrupt Status Register (IS); Table 2-18. IS Register; Table 2-19. IS Fields

Analog-to-Digital Converter/Brownout Detector LH79524/LH79525 User’s Guide
2-20 Version 1.0
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.
Table 2-18. IS Register
BIT 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16
FIELD ///
RESET 0000000000000000
RW RO RO RO RO RO RO RO RO RO RO RO RO RO RO RO RO
BIT 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
FIELD ///
BROWNOUT_UM
PENSYNC_UM
EOS_UM
FWATER_UM
FOVRN_UM
RESET 0000000000010000
RW RO RO RO RO RO RO RO RO RO RO RO RO RO RO RO RO
ADDR 0xFFFC3000 + 0x1C
Table 2-19. IS Fields
BIT NAME DESCRIPTION
31:5 /// Reserved Reading returns 0. Write the reset value.
4 BROWNOUT_UM
Unmasked Brown-Out Interrupt Status
1 = Brown-out Interrupt is active.
0 = Brown-out Interrupt is not active.
3 PENSYNC_UM
Unmasked Pen Interrupt Status
1 = Pen Interrupt is active.
0 = Pen Interrupt is not active.
2 EOS_UM
Unmasked End-of-Sequence Interrupt Active
1 = EOCIA Interrupt is active.
0 = EOCIA Interrupt is not active.
1 FWATER_UM
Unmasked FIFO Watermark Interrupt Active
1 = FIFO Watermark Interrupt is active.
0 = FIFO Watermark Interrupt is not active.
0 FOVRN_UM
Unmasked FIFO Overrun Interrupt Active
1 = FIFO Overrun Interrupt is active.
0 = FIFO Overrun Interrupt is not active.