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SG Z H- 100 Circuit Description
YMU762MA3 is a LSI for portable telephone that is capable of playing high quality music by utilizing FM synthesizer and ADPCM decoder that are included in this device. As a synthesis, YMU762MA3 is equipped 32 voices with different tones. Since the device is capable of simultaneously generating up to synchronous with the play of the FM synthesizer, various sampled voices can be used as sound effects. Since the play data of YMU762MA3 are interpreted at anytime through data bus, the length of the data(playing period) is not limited, so the device can flexibly support application such as incoming call melody music distribution service. The hardware sequence built in this device allows playing of the complex music without giving excessive load to the CPU of the portable telephones. Moreover, the registers of the FM synthesizer can be operated directly for real time sound generation, allowing, for example, utilization of various sound effects when using the game software installed in the portable telephone. YMU762 includes a speaker amplifier with high ripple removal rate whose maximum output is 550mW (SPVDD=3.6V). For the headphone, it is provided with a stereophonic output terminal.
4. Memory
The signals in the MSM6200 enable two memories. They use only one volt supply voltage, VDD_LP from the PM6050. This system uses AMD's memory, AM50DL128BG. It is consisted of 128M bits flash NOR memory and 32M bits SRAM memory. It has 16 bit data line, AD[0~15] which is connected to MSM6200. It has 22 bit address lines, A[1~22]. ROM_CS and RAM_CS signals is chip select. In the multi-media processor, it has three type memories. One is 256Mbit Nor Flash memory another is 256Mbit NAND Flash memory and the other is 128Mbit SDRAM memory. Multi-media processor doesn't have a NAND memory interface. But we make a software algorithm use for NAND memory. 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
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