Samsung SPH-A900 Service Manual page 7

EL Keypad
For key recognition, key matrix is operated by using SCAN(0:6) and KEYSENCE(0:3) of the input ports
of MSM. EL(Electro Luminescence) is included in the keypad for easy operation in the dark.
LCD Module
LCD is composed of a Transmissive with Micro Reflective(TMR) type Main TFT-LCD Panel, Transflective
type Sub TFT-LCD Panel, a driver circuit and a back-light unit.
The resolution of a 2.22" Main LCD contains 240 * 320 pixels, the resolution of a 1.07" Sub
LCD(Transflective) contains 96 * 96 pixels.
Clock
CPU clock : 19.2MHz. Clock signal from the TCXO
Sleep clock : 32.768KHz. Clock signal for sleep.
TCXO/N : 19.2/N MHz. This clock source is used by various blocks of the MSM6500 device, such
as the ARM9CORE, UARTs, general-purpose PDMs and TCXO is also used by the
MSM6500 device to produce CHIPX8.
USB clock : 48MHz. Clock signal for the USB interface
CAMERA
The camera module consists of 1/4 CIS type 1.3 Mega (1310K) Pixels CMOS sensor. The camera
module provides Auto IRIS, and Auto White-Balance functionality.
Bluetooth module
Bluetooth module is a Bluetooth
integrated 2.4GHz transceiver. Bluetooth module supports any voice and/or data application that requires
the Bluetooth SIG standard Host Controller Interface (HCI) via UART and PCM audio interfaces.
Operation Clock: 26MHz
Low-Power Clock: 32.768KHz
TM
1.1 and 1.2 compliant, stand-alone baseband processor with an
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2-3
Circuit Description