Datasheet

582
32133D–11/2011
UC3D
27.7.5 Autonomous/DMA Touch Configuration Register 1
Name:
ATCFG1
Access Type: Read/Write
Offset: 0x14
Reset Value: 0x00000000
•DISHIFT: Discharge Shift
For the autonomous QTouch sensor and DMATouch sensors, specifies how many bits the DILEN field should be shifted before
using it to determine the discharge time.
• SYNC: Sync Pin
For the autonomous QTouch sensor and DMATouch sensors, specifies that acquisition shall begin when a falling edge is
received on the SYNC line.
• SPREAD: Spread Spectrum Sensor Drive
For the autonomous QTouch sensor and DMATouch sensors, specifies that spread spectrum sensor drive shall be used.
• DILEN: Discharge Length
For the autonomous QTouch sensor and DMATouch sensors, specifies how many sample clock cycles the CAT should use to
discharge the capacitors before charging them.
• MAX: Maximum Count
For the autonomous QTouch sensor and DMATouch sensors, specifies how many counts the maximum acquisition should be.
31 30 29 28 27 26 25 24
- DISHIFT - SYNC SPREAD
23 22 21 20 19 18 17 16
DILEN
15 14 13 12 11 10 9 8
MAX[15:8]
76543210
MAX[7:0]