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Description of Block Diagram
1. Power supply block
Power supply
AC Adaptor AD-0006
· +3.3 VD for the CPU, DSP, SDRAM, LEDs including the
7-segment LEDs, and peripherals.
· +1.26 VD for the DSP.
· +3.3 VA for the Analog block.
· +8.0 VA for the Analog block.
2. Analog block
1) Guitar input
The signal from [INPUT] jack is sent to the DSP and
processed there.
· Rated input level -20 dBm
· Input impedance 1 megohm
· pre-em16dB in 40kHz or higher
2)
Output
Output
(For
line/headphones)
· Output load impedance
For line: 10 kilohms or higher
For headphone: 20 mW + 20 mW into 32-ohm load
· Maximum output level +5 dBm
· de-emphasis -16dB in 40kHz or higher
· Frequency response Refer to the following figure.
G2.1u Frequency response (Bypass)
INPUT signal -10(dBm)
-30
-25
-20
-15
-10
-5
0
10
100
1000
10000
100000
Frequency (Hz)
O
U
T
P
U
T LE
V
E
L
(d
B
m
)
