AK4185 AKM [Asahi Kasei Microsystems], AK4185 Datasheet - Page 21

• Manufacturer Part Number: AK4185
• Manufacturer: AKM [Asahi Kasei Microsystems]

The AK4185 can only accept the Register Read and control commands of A2-0, MODE and PD0 bits for the external
clock mode, during executing this sequence. The other commands are ignored. The micro-processor can set CSN = “H”
during the sequence. However, the AK4185 can accept sequence commands even if the AK4185 is in the sleep mode.
When the sleep mode is selected, the AK4185 goes to the sleep mode after the sequence is finished and CSN = “H”.
MS0954-E-00
(SEQM2-0 bits=“001”,
Internal Sequence
PENIRQN
X - Y Scan)
OSCLK
DOUT
SCLK
SCN
DIN
Hi-Z
PEN Touch
Figure 20. Internal Clock Mode Control Sequence (X-Y Scan: SEQM bits = “001”)
Figure 21. Internal Clock Mode Control Sequence (X-Y Scan: SEQM bits = “001”)
S=1
S
(DDLY bit=0)
(DDLY bit=1)
Sequential Mode
PENIRQN
= “010111”
(Sequence Mode Start → Internal Sequence Processing → Data Available)
DOUT
DOUT
SCLK
SCN
DIN
W=0
W
Hi-Z
Hi-Z
DAV
Wait
S=1
S
Sequential Mode
Tracking, Conversion
= “010111”
(X-axis 1st)
20 OSCLK
(Data Available → A/D Data Read)
R=1
R
0
0 0 0 0
Tracking, Conversion
(X-axis 2nd)
20 OSCLK
X-axis 12bit A/D-data
- 21 -
16 SCLK
X-axis 12bit A/D-data
Tracking, Conversion
0 0 0 0
(X-axis nth)
20 OSCLK
0 0 0 0
Y-axis 12bit A/D-data
Wait
16 SCLK
Y-axis 12bit A/D-data
Tracking, Conversion
(Y-axis 1st)
20 OSCLK
0 0 0
Tracking, Conversion
(Y-axis nth)
20 OSCLK
DAV
[AK4185]
PENIRQN
Enable
2008/05