LG KG271, Service Manual

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3. TECHNICAL BRIEF
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3.1.4 PMU Details
The E-GOLDvoice includes battery charger support (various sensor connections for temperature,
battery technology, voltage, etc.) and a ringer buffer.
E-GOLDvoice avoids the need for an external power management component because its internal
power management unit contains:
• Voltage regulators for the On-chip and Off-chip functional blocks
• Charger circuitry for NiCd, NiMh and LiIon cells.
3.1.5 Bus Concept
The E-GOLDvoice has two cores (a microcontroller and a DSP), each with its own bus.
There is an interconnection between the TEAKlite bus and the C166S X-Bus.
3.1.6 C166S Buses
The C166S is connected to three buses:
1. Local Memory (LM) bus
2. X-Bus
3. PD-Bus.
3.1.7 TEAKLite Bus
The TEAKlite is connected to the TEAKlite bus.
3.1.8 Bus Interconnections
The interconnection between the X-Bus and the TEAKlite Bus uses:
• Multicore Synchronization
• Shared Memory.
3.1.9 Clock Concept
The E-GOLDvoice has a flexible clock control.
3.1.10 Interrupt Concept
The C166 MCU carries out the E-GOLDvoice interrupt system.
3.1.11 Debug Concept
The E-GOLDvoice includes a multi-core debug. The C166 and TEAKlite cores can be debugged in
parallel with:
• A single JTAG port (that is, on a single host)
• Mutual breakpoint control.