Roland ME-25 - Block Diagram; System Architecture Overview

18
Feb. 2010 ME-25
Block Diagram
fig.Block.eps@L
PSA–XXX
9V
PreEnpha
/ AFAD
DC–DC
IC15
RESET IC
IC2
LED * 3
INPUT
VR (EXP)
Digital +1.5V
Digital +5V
Digital +3.3V
Q12, Q14, Q15
ESC
IC4
7SEG
LED * 8
LED Driver *2
IC8, IC10
SDRAM
IC14
TUSB
IC1
X’tal X1
VR *4 SW * 12
VBUS DET
CODEC
IC7
AK4552
DeEnpha
A
EEP–RO
M
(1 Mbit f
o
Analog +9V
BATT LR6 SizeAA *6
AIN5
AIN[0–4]
AIN6
SWDATA[0–11]
BATTERY DET