LG KF700Q Service Manual page 26

■ IC-level interfaces
- ESM device-compatible 3-line SBI for efficient initialization, status, and control
- Supports the ESM 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 ESM 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 ESM
device to computers as a USB peripheral, or connecting the ESM device to other peripherals
- RUIM level translators enable ESM device interfacing with external modules
■ Twelve multi-purpose pins that can be configured as digital or analog I/Os, bidirectional 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.
■ The PM6658 IC is available in the 97-pin chip scale package (97 CSP) that includes several center
ground pins for electrical grounding, mechanical strength, and thermal continuity.
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Only for training and service purposes
3. TECHNICAL BRIEF
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