LG KU250 Service Manual - Page 27
MSM6245 Interface - flash driver
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3. TECHNICAL BRIEF • Integrated handset-level user interfaces - Four programmable current sinks recommended as keypad backlight, LCD backlight, camera flash, and general-purpose drivers - Vibration motor driver programmable from 1.2 to 3.1V in 100 mV increments - Speaker driver with programmable gain, turn-on time, and muting; differential operation (drives external 8 Ω speakers with volume controlled 500 mW) • IC-level interfaces - MSM device-compatible 3-line SBI for efficient initialization, status, and control - Supports the MSM device's interrupt processing with an internal interrupt manager - Many functions monitored and reported through real-time and interrupt status signals - Dedicated circuits for controlled power-on sequencing, including the MSM device's reset signal - Several events continuously monitored for triggering power-on/power-off sequences - Supports and orchestrates soft resets - USB-OTG transceiver for full-speed (12 Mb/s) and low speed (1.5 Mb/s) interfacing of the MSM device to computers as a USB peripheral, or connecting the MSM device to other peripherals RUIM level translators enable MSM device interfacing with external modules • Twelve multi-purpose pins that can be configured as digital or analog I/Os, bi-directional I/Os, or current sinks. Default functions support the RUIM level translators, power-on circuits, analog multiplexer inputs, an LED driver, and a reference voltage buffer. • Highly integrated functionality in a small package - 84-pin BCCS with a large center slug for electrical ground, mechanical stability, and thermal relief [Figure 1.6] MSM6245 Interface - 28 -