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Circuit Description
2-4
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HD(0:15), data lines and HA(0:23), address lines are connected to memory and CL8522S5 to communicate.
ARM core and DSP core. OEn, WEn control the access of memory. KROW, and KCOL recognize the key string input
status. It has J-TAG control pins (TDI/TDO/TCK) for ARM and DSP core. J-SEL signal controls different access to ARM
and DSP core. ADC(Analog to Digital Convertor) receives the condition of temperature, battery type and battery voltage.
2-2-10. TCO-5871U (TCX100, 26MHz)
This system has the 26MHz TCXO, TCO-5871U from Toyocom. AFC controlling signal form PCF5213EL1 controls
frequency from 26MHz X-tal. It generates the clock frequency. This clock is connected to PCF5213EL1 and UAA3587.
2-2-11. CL8522S5 (U303)
CL8522S5 provides rich video functions up to 30-frame display with minimized tasks in the handset main processor
as well as hardware based real-time JPEG compression and decompression. CL8522S5 directly transmits and previews
the RGB data to the LCD graphic memory by processing the sensor output data according to the handset's command.
It can save the raw RGB data up to VGA resoultion into its image buffer and allows the host processor to download
with scalable sized compressed data. It also provides I2S data bus to playback MP3 formatted data.
It utilizes 16 bit data bus for communication with the main processor, including bus interface types.