7-2
Samsung Electronics
Schematic Diagram
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7-1 Overall Block Diagram
VCC_2.8
Nand Flash
SDRAM
SD256M16E
32MB(16M*16)
TFT LCD (262K color)
TS-180T-008A
(176*220)
LCD_D [0..15]
Processor
(S5L8700)
- 32bit ARM940T (200Mhz)
- 16bit CalmADM2E (120Mhz)
- 256kb SRAM
I2S
I2S
ADC
NF_D [0-7]
XD [0-15]
XA [1-12]
USB
Power On
USB 5V
VCC_2.8
VCC_2.8
VDD_BATT
USB 5V
Core_1.2
VCC_2.8
VCC_2.8
CORE_1.2
VCC_2.8
VCC_BATT
USB
Jack
Charge Pump
(AAT3151)
Li-Polymer
Batt.
600mAh
CODEC
(WM1800G)
Earphone
DC/DC
Converter
Charger IC
(AAT2550)
Reset
DFU
32.768KHz
/12Mhz
RTC
S-35392A
FM Tuner
(Si4702)
Touch
Key PAD
UART
Line-In
Line-Out
USB
Controller
I2S
In the Main System, the Processor (S5L8700), SDRAM, Flash Memory, Power Block, Audio DAC and others have a
basic circuit block and include the FM-Tuner function block. The display connects with the 1.8 inch TFT LCD.
The IC Serial Interface covers the whole system and has a variety of protocols. First use the host processor (S5L8700)
UART and implement the CODEC and FM Tuner functions.
The audio DAC use to I2C, I2S to achieve Mode Setting and data transmission separately.
The power is turned on or off by the Power S/W on the right side of the set. Power is possible through the internal
battery or the adapter, and 5V input is possible with the adapter. Power through the adapter charges the battery at
AAT2550, and system power (2.8V, 1.2) is made.