C8051F960-B-GM Datasheet, PDF (324/492 Pages) Silicon Laboratories – Ultra Low Power 128K, LCD MCU Family

C8051F96x
SFR Definition 25.4. PC0STAT: PC0 Status
Bit
7
6
5
4
3
2
1
0
Name FLUTTER _DIRECTION
STATE[1:0]
PC1PREV PC0PREV PC1
PC0
Type
RO
RO
RO
RO
RO
RO
RO
Reset
0
0
0
0
0
0
0
0
SFR Address = 0xC1; SFR Page = 0x2
Bit
Name
Function
7
FLUTTER
Flutter
During quadrature mode, a disparity may occur between the number of neg-
ative edges of PC1 and PC0 or the number of positive edges of PC1 and
PC0. This could indicate flutter on one reed switch or one reed switch may
be faulty.
0: No flutter detected.
1: Flutter detected.
6
DIRECTION
Direction
Only applicable for quadrature mode.
(First letter is PC1; second letter is PC0)
0: Counter clock-wise - (LL-LH-HH-HL)
1: Clock-wise - (LL-HL-HH-LH)
5:4
STATE[1:0]
PC0 State
Current State of Internal State Machine.
3
PC1PREV
PC1 Previous
Previous Output of PC1 Integrator.
2
PC0PREV
PC0 Previous
Previous Output of PC0 Integrator.
1
PC1
PC1
Current Output of PC1 Integrator.
0
PC0
PC0
Current Output of PC0 Integrator.
324
Rev. 1.0