AK4180 Datasheet, PDF (14/17 Pages) Asahi Kasei Microsystems – Touch Screen Controller

[ASAHI KASEI]
[AK4180]
100kΩ
PENIRQN
EN2
20kΩ
Driver OFF
XP
EN1
YN
Driver ON
Figure 6 PENIRQ Functional Block Diagram
CSN
DCLK
DIN
BUSY
DOUT
CONV
Internal
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
S A2
A1
A0
MO
SER/
DFR
PD1
PD0
11 10 9
8
7
6
5
4
3
2
10
AXIS = ((!A2) & (!A1) & (A0))
| ((!A2) & (A1) & (A0))
| ((A2) & (!A1) & (!A0))
| ((A2) & (!A1) & (A0));
/* X-axis Measurement */
/* Z1 Measurement */
/* Z2 Measurement */
/* Y-axis Measurement */
EN1 = ((!CSN) & (!CONV) & AXIS & PD0)
/* CSN=”L”, X/Y/Z1/Z2 Measurement, PD0 = 1, NOT “CONV period” */
| ((!CSN) & AXIS & CONV);
/* CSN=”L”, X/Y/Z1/Z2 Measurement, “CONV period” */
EN2 = ((!CSN) & (!CONV) & (!PD0))
/* CSN=”L”, PD0 = 1, NOT “CONV period” */
| (CSN & (!(PD1& PD0));
/* CSN=”H”, (PD0, PD1) is not (1,1) */
<MS0195-E-01>
14
2003/02