Grundig GDR8700, Service Manual

Page: 11 / 18

GR
UNDIG Ser
vice
MPixx
VP 1000/1GB
2 -
1
Schaltpläne und Platinenabbildungen / Circuit Diagrams and Layout of the PCBs
Blockschaltplan / Block Diagram
VCC
3.7V 750mA
Li-Io n BATT
COMPUTER COMPUTER
PMU PART
PMU PART
STEP DOWN
Converter
LDO
STEP DOWN
CONVERTER
VCC_CORE
VCC
USB_DATA INTERFACE
KEY MATRIX
PLAY/STOP
MENU
MODE
EQ/SPEED
REC
HOLD
VOLUME
FF/REW
PMU PART
EXTERNAL
AUDIO
CONTROL
PART
ADC &
GPIO
12MHz
PLL PLL
VCC
65K OLED
120 * 160
XXXMB
NAND
FLASH
MEMORY
AUDIO CODEC
FM MODULE
MIC
AMPLIFIER
DAC
LINE
INPUT
MIC IN
A
-
D
C
o
n
ve
rt
er
VCC_USB ANT
LINE INPUT
SPK OUT
MIC
EXTER E E NAL
AUDIO
CONTROL
PART
USB 2.0
Controlle r
EXTERNAL
MEMORY
CONTROL
PART
GPIO
KEY SIGNAL INPUT
32bit Arm940TDMI RISC MCU Core
I2C Interfa ce
Li+ Charging
Controlle r
32.768KHz RTC
RTC
I2C Interfa ce
OLED PWR
Booster
PART
LCD
LCD
INTERFACE
INTERFACE
128Mb
Mobile
SDRAM
XDATA[ 00:15 ]
X
D
A
T
A
[0
0:
07
]
Adress[ 00:12 ]
NAND FLASH
INTERFACE
NDATA[ 0:7]
12MHz