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Circuit Description
- Charging Battery Regulation Voltage
① Min 4.158V, Typical 4.2V, Max 4.242V(at T
② Min 4.137V, Typical 4.2V, Max 4.263V(at T
Universal Serial Bus Interface
SPH-A940 supports a Universal Serial Bus(USB) interface by the MSM6500, to provide an efficient
interconnection between the mobile phone and a Personal Computer(PC).
The MSM6500's USB interface is designed to comply with the Universal Serial Bus Specification,
Revision 2.0. An external USB transceiver(U203) is required to implement the USB interface.
2-1-3. Logic Part
The logic part consists of MSM, MEMORY, LCD, CAMERA, CCP, external MEMORY and other input and
output peripherals.
MOBILE SYSTEM MODEM(U101:MSM6500)
Industry standard ARM926EJ-S microprocessor is embedded. The MSM6500 chipset integrates
CDMA2000 1x and 1xEVDO service. The 1xEVDO solution can support High-speed peak data rates of
2.4Mbps on forward link and 153kbps on reverse link.
The MSM6500 device is offered in a 409 ball, 0.5mm pitch, CSP production package. Subsystems within
the MSM6500 device include a CDMA processor, a QDSP for voice compression, an ARM9TDMI
microprocessor. Also integrated in the MSM6500 device are analog functions such as an audio voice
codec, PLL, transmit DAC
clock. It is one of the most important components of the CDMA cellular phone.
The interface circuitry consists of reset circuit, dual address/data bus and memory controls. The TCXO
clock of 19.2Mhz is used as the main clock of SPH-A940 model.
MCP : NAND FLASH and SDRAM (U102(KBE00F003M))
MCP is consist of two 512Mbit(64M*8) NAND FLASH and two 256Mbit(4M*16*4Banks) Mobile SDRAM.
NAND FLASH is used to store the Font data and program. EFS area is used to store ESN, NAM
information, telephone directory, SMS messages and other important information of the phone, and also
to store application programs and downloaded stuffs such as BREW applications and MP3. MCP is also
used to excute the DMSS(Dual Mode Subscriber system) software.
Using the down-loading program, the program can be changed even after the terminal is fully assembled.
, ADC
, memories, USB controller, peripheral interfaces, and an enhanced
S
S
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
: 0°C to +85°C)
A
: -40°C to +85°C)
A
2-2
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