Table of Contents
Advertisement
Circuit Description
2-3. EMI ESD Filter
This system uses the EMI ESD filter, GMF05LC to protect ESD and Noise from IF CONNECTOR part, LCD,
Camra, and KEY PCB.
2-4. IF connetor
It is 24-pin connector. They are designed to use VBATT, VF, Q_TXD0, Q_RXD0, JIG_ON, M_RXD0, M_TXD0, USB
signal(D+,D-,USB_VCC) and GND. They connected to power supply IC, microprocessor and signal processor IC.
3. Audio
RCV_P and RCV_N from U601 are connected to the main receiver. EAR10P and EAR10N are connected to the
Earphone receiver. MIC1P and MIC1N are connected to the main MIC. And MIC2P and MIC2N are connected to
the Earphone.
YMU769 has a virtual speaker image function, so that it is the most suitable LSI as a sound source output device
which is used in mobile phones for high functional game sounds or high quality ringing melodies, and so on.
Synthesizer section in YMU769 adopts the "Stereophonic Hybrid Synthesizer System" that is given the advantages
of both FM Synthesizers and Wave Table Synthesizers, makes it possible to generate up to 32 FM voices and 32
wave table voices simultaneously.
YMU769 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, YMU769 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 YMU769 is 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.
YMU769 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 SPANSION's memory, S99PL129JCOBAWUC. 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 two type of memories. One is 1GMbit NAND Flash memory and the other is
512Mbit SDRAM memory. Multi-media processor doesn't have a NAND memory interface. But we make a software
algorithm use for NAND memory.
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization
2- 4
Advertisement
Table of Contents
