Pantech GB310, Руководство по обслуживанию

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GB310 Service Manual
1
PANTECH
SRAM has a capacity of 16Mbit(2MByte) and stores system parameters, data buffer, and stack of
each task in it.
3 Key Tone Generation
All alert signals are generated by the DSP and output to the ABB audio output.
These alert can be used for the earpiece.
4.1.4 Notification Part
The notification of incoming call is given by melody, vibrator, and 2color-LED.
1) Melody:
This is a device sounding alert/melody tones.
The melody datas are stored in flash memory (U103) And generated by Melody IC(U104).
2) Vibrator:
This is a device enabling vibration. The vibrator data is stored in flash memory(U103)
And generated by A10(GPIO_9)pin.
3) 2color-LED:
This is a device to indicate a notification mode using the lamp.
U102 Nos. L16 and M16 signal drives the lamp to flash.
4.1.5 Key Pad Part
To enable key operation to input information, the key matrix is configured using strobe signal of
KEYPADROW(0-4) and 5 input ports of KEYPADCOL(0-4). Also, to use the key even at light, the
backlight circuit is provided for LED 8s.
4.1.6 LCD Module(Display Part)
LCD module consists of LCD, controller, LED-Backlight,
LCD: 1S/W Icon x 1 lines[(128x3)x128] can be displayed on the LCD panel. 6 icons could be
provided by S/W. Controller with English font built in has been used.
LED-backlight Using illuminates the LCD panel, and LCD reflector enhances LCD display effect.