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LCD lamp PWM
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PCM audio clock
PCM audio out
PCM audio L/R sync
?
?
4K16Hz?
LCD BUS ?
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USB
USB
?
Rotary knob A
Rotary knob B
21
KB row1/ GPG9
KB row2 / GPG10
KB row3 / GPG11
KB row0 / GPG8
KB col2 / GPD10
KB col1 / GPD9
KB col0 / GPD8
KEYBOARD SCAN MATRIX
P1
P2
P3
P4
P5
SHFT
?
?
STBY
SEL
REPL
BACK
row0
row1
row2
row3
col0
col1
col2
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
VCC
VCC
VCC
VCC
VCC
GND
LED 'Menu'
LED 'Volume'
UART? [RT]X
UART? [RT]X
disabled because of missing R's
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