LISA-U1 series - System Integration Manual3G.G2-HW-10002-3 Preliminary System descriptionPage 10 of 125Baseband section and power management unitAnother shielding box includes all the digital circuitry and the power supplies, basically the following functionalblocks:Wireless baseband processor, a mixed signal ASIC which integrates:Microprocessor for controller functions, 2G & 3G upper layer softwareDSP core for 2G Layer 1 and audio processing3G coprocessor and HW accelerator for 3G Layer 1 control software and routinesDedicated HW for peripherals control, as UART, USB, SPI etcMemory system in a Multi-Chip Package (MCP) integrating two devices:NOR flash non-volatile memoryDDR SRAM volatile memoryPower Management Unit (PMU), used to derive all the system supply voltages from the module supply VCC32.768 kHz crystal, connected to the Real Time Clock (RTC) oscillator to provide the clock reference in idle orpower off mode1.2.2 Hardware differences between LISA-U1 series modulesHardware differences between the LISA-U1 series modules:3G Dual-band support:Band II (1900 MHz) and Band V (850 MHz) are supported by LISA-U100, LISA-U120Band I (2100 MHz) and Band VIII (900 MHz) are supported by LISA-U110, LISA-U1303G maximum data rate capabilities:HSUPA category 6, up to 7.2 Mb/s DL, 5.76 Mb/s ULHSDPA category 8, up to 7.2 Mb/s DL, 384 kb/s ULAudio support:One differential analog audio input, one differential analog audio output and one 4-wire digital audiointerface are supported by LISA-U120 and LISA-U130No analog audio input, no analog audio output and no digital audio interface are supported byLISA-U100, LISA-U110