User's Manual

TOBY-R2 series - System Integration Manual
UBX-16010572 - R04 System description
Page 11 of 147
Baseband and power management section
The Baseband and Power Management section is composed of the following main elements:
 A mixed signal ASIC, which integrates
Microprocessor for control functions
DSP core for cellular Layer 1 and digital processing of Rx and Tx signal paths
Memory interface controller
Dedicated peripheral blocks for control of the USB, SIM and generic digital interfaces
Interfaces to RF transceiver ASIC
 Memory system, which includes NAND flash and LPDDR2 RAM
 Voltage regulators to derive all the subsystem supply voltages from the module supply input VCC
 Voltage sources for external use: V_BCKP and V_INT
 Hardware power on
 Hardware reset
 Low power idle-mode support
 32.768 kHz crystal oscillator to provide the clock reference in the low power idle-mode, which can be set by
enable power saving configuration using the AT+UPSV command.