3.1.1 Block diagram of the player
Block diagram of the player is shown in the picture 3.1.1.1:
Figure 3.1.2.1 Block diagram of the player
FM MODULE
TEA5767
LDO BACKLIGHT
RT9284
QVGA LCD
SWITCH CIRCUIT
RESET CIRCUIT
HEADPHONE
MICROPHONE
TOUCH-BUTTON
CONTROL
CY8C21434
TOUCH-BUTTON
ARRAY
AUDIO CODEC
WM8750
SDRAM
FLASH MEMORY
LDO CIRCUIT
TPS79333
DC-DC CIRCUIT
TPS62200
POWER
MANAGEMENT
MODULE
USB INTERFACE
U
S
B
P
O
W
E
R
A
D
A
P
T
O
R
P
O
W
E
R
LI-ION BETTERY
CHARGE
MANAGEMENT
24M CRYSTAL
AUDIO&VEDIO CODEC
RK2608
Section One Principle of the Player
Chapter Three Principle and Servicing
3.1.2 Principle of the player
V3/V5 portable Mp4 player is mainly composed of the following functional modules:
1. Decode part: main video decode chip adopts Rk2608 decode chip of Rockchip Company with
built-in ROM and RAM, which may directly drive TFT LCD screen. Main audio decode chip adopts
Wm8750 decode chip of Wolfson Company.
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