AK4160 Datasheet, PDF (30/40 Pages) Asahi Kasei Microsystems – 16-channel Capacitive Touch Sensor IC

[AK4160]
IRQ Control Register (IRQCn: n=0~2)
These are the control registers of the IRQ pins. When the IRQ pins are used as GPIO, the bit allocation is different.
IRQ Interrupt Register (When GPEN bit = “0”)
Address 0x64/0x68/0x6C (W/R) Default 0x08
Description
D7
D6
D5
D4
D3
D2
D1
D0
IRQ Interrupt
GPEN
CLRM
HIGH DRV[1] DRV[0] DSTR
PE
PU
Address 0x65/0x69/0x6D (W/R) Default 0x00
Description
D7
D6
D5
IRQ Interrupt
DRDY TOUCH
REL
D4
D3
D2
D1
D0
ACF
RANGE
GPIN Reserved
TSL
Bits
D7
D6
D5
D4-D3
D2
D1
D0
Name
GPEN
CLRM
HIGH
DRV
DSTR
PE
PU
Description
GPIO Enable
This bit should be set to “0” in the IRQ operation.
Clearance Setting of IRQ Status (Addr 0x03 IRQ2-0 bits)
0: Read Clear of IRQ Status
1: Write Clear of IRQ Status (Clear to write “1” to IRQ2-0 bits)
IRQ status is cleared in the edge operation. The status is not changed in the level
operation.
Polarity selection of IRQ pins
0: Active Low
1: Active High]
IRQ pins are always non-active in the shutdown mode.
Output Driver Setting
00: CMOS Output
01: Low Side Output: When Output is “H”, Hi-z (Open Drain)
10: High Side Output: When Output is “L”, Hi-z (Open Drain)
11: CMOS Output (Same as 00 Setting)
The Driving ability of the GPIO output driver is set.
0: 1/3 drive
1: full drive
Pull-up, Pull-down Enable
0: Invalid
1: Valid. The direction is fixed by PU bit.
Pull-up / Pull-down Selector
0: Pull-down
1: Pull-up
MS1313-E-01
- 30 -
2011/11