Casio QT-6000 Service Manual page 78

PIN NAME I/O
XT I
Oscillator connection pins. When external clock is used, input clock into XT pin and leave XT pin open.
XT O
Outputs sampling frequency selected at recording or playback.
VCK O
VCK pin is used as a synchronizing signal when external ADC or DAC is used.
RESET I When this pin is "L" level input, the LSI is initialized.
TEST0
I Pins for testing. Set the pins to "L".
TEST1
SG O Analog circuit signal ground output pin.
MIN Inverting input pin for built-in OP amplifier. Noninverting input pin is connected to SG (Signal Ground)
I
LIN internally.
MOUT
O MOUT is the output of internal OP amplifier to MIN, and LOUT is to LIN.
LOUT
Left analog output pin from built-in LPF. This is the output pin of playback wavefroms, and is connected to
AOUTL O
the amplifier for driving speakers.
Right analog output pin from built-in LPF. This is the output pin of playback wavefroms, and is connected to
AOUTR O
the amplifier for driving speakers.
DV — Digital power supply pin. Insert a minimum 0.1 mF bypass capacitor between this pin and DGND pin.
DD
DGND — Digital GND pin.
AV — Analog power supply pin. Insert a minimum 0.1 mF bypass capacitor between this pin and AGND pin.
DD
AGND — Analog GND pin.
DESCRIPTION
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