AK4533 Datasheet, PDF (6/40 Pages) Asahi Kasei Microsystems – Audio Codec with Touch Screen Controller

[ASAHI KASEI]
No.
Signal Name
2 TADE
45 INT
46 TADRDY
47 TADOUT
48 TADCK
Miscellaneous
17 TST0
18 TST1
19 TST2
20 TST3
1 NC
12 NC
22 NC
25 NC
37 NC
44 NC
I/O
Description
I Touch Panel A/D Data Chip Enable Pin
This pin enables the output of Touch Screen A/D converter when it goes to
“H”. ADC starts tracking at the rising edge. A/D Conversion and the output
require 16 TADCK clock cycles. This pin should be set to “L” once per one
A/D conversion.
O Interrupt
This pin is “H” ONLY when the touch screen is pressed. In other cases, the
pin is “L”.
O Touch Screen A/D data Output Ready
When Touch Screen A/D converter is ready to output data, TADRDY pin goes
to “H”. This pin goes back to “L” after 12 bit data is output.
O Touch Screen A/D Data Output
MSB of A/D data is output at the rising edge of TADRDY is “H”. Other bits of
data are output at the falling edge of TADCK clock
I Touch Panel ADC Clock
This clock is used for A/D conversion and for the output of data One A/D
conversion needs 16 TADCK clock cycle.
- Test pin 0
Should be Connected to DGND.
- Test pin 1
Should be Connected to DGND.
- Test pin 2
Should be Connected to DGND.
- Test pin 3
Should be Connected to DGND.
- Non Connection
- Non Connection
- Non Connection
- Non Connection
- Non Connection
- Non Connection
<Revision 0.9a>
5
July 00