CHAPTER 6 PIN FUNCTIONS
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6.1.9 Audio Interface Signal
The audio interface signal is used to output an audio signal, usually when a WAVE file is being
regenerated. Table 6-9 indicates the function of this signal.
Table 6-9. Audio Interface Signal
Signal name
I/O
Definition
Function
AUDIOUT[1..0]
O
Audio Out
Audio output signal. When a WAVE file is regenerated, an audio
signal is output.
6.1.10 Touch Panel Interface Signals
The touch panel interface signals control the A/D converter that is connected to the V
R
4101 and which is
used for the touch panel. Table 6-10 lists the functions of these signals.
Table 6-10. Touch Panel Interface Signals
Signal name
I/O
Definition
Function
ADCS*
O
A/D Converter Chip
Select
A/D converter chip select signal. This signal is activated when
data is transferred to and from the A/D converter.
ADCLK
O
A/D Converter Clock
A/D converter clock output. A clock is supplied to the A/D
converter.
ADIN
I
A/D Converter Data In
A/D converter data input signal for receiving A/D converter output
data.
ADSOUT
O
A/D Converter Serial Out
A/D converter serial data output signal. This signal is used to
output serial data for setting the A/D converter.
ADEOC
I
A/D Converter End Of
Change
A/D converter data conversion end signal. Assert this pin to
terminate A/D conversion by the A/D converter.
PENCONT
[4..0]
O
Touch Panel Control
Touch panel control signal. This signal is output, for example, to
control the voltage applied to the touch panel.
PENCHGINT*
I
Pen Change Interrupt
T/P interrupt signal. When a key of the touch panel is pressed,
the external circuitry asserts this pin.