Sharp SYSTEM-CD130H Service Manual page 47

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SYSTEM-CD1TSUR
Terminal Port Name Input/
Name Output
MTCONT2 Input/Output
P10-P13 | POWER-IN, Input/Output
CK (VOL),
DATA (VOL),
STB (VOL)
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—
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ca POWER-ON Input/Output
execute input or output.
15*,16* | D9,D10
SRS2,SRS1
Input/Output | Each terminal can be used to input or output 1 bit at a time. The output section has a
on port D can be set to "1° using the CLD command.
17
PU-IN
Input/Output | Used to receive 4 bits at a time.
MUTE Input/Output
To use the port for input, set the output latch for that bit to "1". All of the output latches
latch which holds 1 bit. One of the D ports is assigned by register Y as a data point, to
P20
RF
Input/Output | Used to receive 4 bits at a time.
Input/Output | Reset pulse input/output terminal. When a reset is caused by the watch dog timer, an
5) 2
=|
ny
GND input terminal.
Input
i" _ =
GND input terminal for the A-D converter.
| Input | Reference voltage input terminal for the A-D converter.
Used to receive 4 bits at a time.
Used to receive 4 bits at a time.
Positive power supply terminal.
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