Samsung SGH-Z500 Anycall Service Manual page 8

Circuit Description
2-3. EMI ESD Filter
This system uses the EMI ESD filter, GMF05LC to protect noise from IF CONNECTOR part.
2-4. IF connetor
It is 24-pin connector. They are designed to use VBATT, CF, UART1_TX, UART1_RX, UART1_RFR,
UART1_CTS, JIG_ON, RTCK, TCK, TDI, TDO, TMS and GND. They connected to power supply IC,
microprocessor and signal processor IC.
3. Audio
EAR1OP and EAR1ON from U302 are connected to the main speaker. AUXOP and AUXON are connected to
the Digital AMP. MIC1P and MIC1N are connected to the main MIC. And MIC2P and MIC2N are connected to
the Earphone.
YMU765 has a built-in amplifier, and thus, is an ideal device for outputting sounds that are used by mobile
phones in addition to game sounds and ringing melodies that are replayed by a synthesizer.
The synthesizer section adopts "stereophonic hybrid synthesizer system" that are given advantages of both FM
synthesizers and Wave Table synthesizers to allow simultaneous generation of up to 32 FM voices and 32 Wave
Table voices. Furthermore, YMU765 has a built-in hardware sequencer that helps to realize complex play without
heavily loading the host CPU. And this device also has a built-in circuit for controlling vibrators and LEDs
synchronizing with play of music. The consumed electric current can be stopped to the minimum by power down
mode when not operating.
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.
4. Memory
The signals in the MSM6250 enable two memories. They use only one volt supply voltage, VDD_LP from
the PM6650. This system uses SEC's memory, KBE00F005M-F411. It is consisted of 1G bits flash NAND
memory and 512M bits SDRAM memory. It has 16 bit data line, D1[0~15] which is connected to MSM6250.
It has 22 bit address lines, A[1~22]. ROM_CS and RAM_CS signals is chip select.
6. Camera
The camera module consists of Mega pixel and VGA pixel. The Mega camera is a highly integrated CMOS color
image sensor implemented by Hynix COMS sensor process realizing high sensitivity and wide dynamic range.
Total pixel array size is 1184H x 914V, and 1170H x 880V pixels are active. The VGA camera is a
highly integrated CMOS color image sensor implemented by Hynix COMS sensor process realizing high sensitivity
and wide dynamic range. Total pixel array size is 656H x 492V, and 656H x 488V pixels are active.
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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