AK4533 Datasheet, PDF (31/40 Pages) Asahi Kasei Microsystems – Audio Codec with Touch Screen Controller

[ASAHI KASEI]
TSPD Power-down Control of Touch Screen
If TSPD is set to "1", Touch Screen block including ADC goes to power-down mode regardless of D3,D2,D1,and D0
bits.
TSPD=”1” Power Down
TSPD=”0” Normal Operation
PW
Waiting State for Interrupt
If PW bit is set to "1", the AK4533 goes to waiting state which can notify whether the touch screen is pressed or not.
If the touch screen is pressed under this state, INT signal goes to "H", and goes to "L" when the pen is released. INT
pin is "L" while the screen is not pressed. If PW bit is set to "0", INT pin is "L" regardless of pressing or releasing.
PW= “1” Interrupt Enable
PW= “0” Interrupt Disable
<Revision 0.9a>
30
July 00