LG GX500 Service Manual page 29

3. TECHNICAL BRIEF
GX500 Operational Description
3.2.2.1 Block Description
Connectivity
S-GOLDradio offers a variety of connectivity options common in today's feature phone applications:
TM
• USB 2.0 Full Speed (12 Mbps)
• IrDA Controller
Supports Infrared SIR Mode Transceivers
• RS-232 over a 16C550 compliant UART
• MMC/SD Memory Card Interface
– Low Voltage Capable
– SDIO expandable (using external components)
• Ready to connect to the Infineon's Bluemoon Family Bluetooth Transceivers
– HCI (H5) optimized USIF (Universal Serial Interface)
– Dedicated PCM-style digital audio interface (I2S)
– Dedicated power supply
• Microcontroller-Like Extension Interface
For multimedia companions (for example, complex display/camera modules or graphic accelerators)
• External Memory Interface
Supporting:
– SDRAM
– Cellular RAM
– Burst Flash
– SRAM
– NAND flashes (error correction capability in HW)
• User Interface (Keypad)
Supporting up to 74 keys with multiple key-press capability
• SIM Card interface (USIM)
ISO 7816 compatible
• Analogue Measurement Unit
For various general purpose measurements such as battery voltage, battery, VCXO and environmental
temperature, battery technology, transmission power, offset, on-chip temperature, etc.
Security
S-GOLDradio has the following security features:
TM
• Secure Boot and Flash Update
• SHA1 HW acceleration
• Secure Debug
• 128-bit customer defined efuse key
• Anti-intrusion logic.
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