Samsung SGH-Z107 Service Manual page 9

5. Multi-media processor MA55133
MA55133 is an LSI, which is designed on 3GPP 3G-324M Standard for a video telephone system.
Since protocol software is external, MA55133 can run with another protocol like H.323 by changing its software.
Because of small power consumption - Typ.140mW and very small package - FPBGA, it is suitable to use
3G-324M LSI for portable apparatus.
Feature
- Based on 3GPP 3G-324M standard
- Video MPEG-4 (simple profile level1) or H263 (baseline)
- Audio AMR, G723.1, MP3 or AAC (program downloadable)
- Multiplexing H.223 (Level 0, 1, 2, processed by CPU with assistant hardware)
- Control H.245 (Processed all by CPU)
- Built-in 32bit RISC CPU(ARM7TDMI) for control, including H.245 and H.223
- Built-in 16bit DSP for audio CODEC
- Built-in SD card I/F
- Video input Rec601 YUV = 4:2:2, 8 bit I/F
- Video output Rec601 YUV = 4:2:2(8bit) / RGB 18bit
Built-in Picture-In-Picture Image Displaying Functions
Built-in On Screen Display(OSD) Functions
- Video CODEC 15fps for both encode and decode in QCIF size is possible.
- Program on SDRAM is executable without ROM (optional).
- Power supply VDDI=2.0V to 2.7V (internal), VDDO=2.7 to 3.6V (I/O)
6. Camera (HV7131GP)
The HV7131GP is a highly integrated single chip CMOS color image sensor implemented by proprietary Hynix
0.35um COMS sensor process realizing high sensitivity and wide dynamic range. Total pixel array size is
652X492, and 652X488 pixels are active. Each active pixel composed of 4 transistors has a micro-lens to
enhance sensitivity, and converts photon energy to analog pixel voltage. On-chip 10bit Analog to Digital
Converter(ADC) ditgitizes analog pixel voltage, and on-chip Correlated Double Sampling(CDS) scheme reduces
Fixed Pattern Noise(FPN) dramatically. The integration of sensor function and image processing functions make
HV7131GP especially very suitable for mobile imaging systems such as IMT-2000.
7. Irda
This system uses IRDA module, HSDL_3208, Agilent's. This has signals, "IRA_DOWN"(enagle signal),
"RXD0"(Input data) and "TXD0"(output data). These signals are connected to U302(MSN6200). It uses two power
signals. "VDD_LP" is used for circuit and "VBATT" is used for LED.
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Circuit Description