Baseband Architecture; Baseband Core - Nokia RH-6 Series Baseband Description & Troubleshooting

RH-6
6 - BB Description & Troubleshooting

Baseband Architecture

Baseband core

Universal Phone Processor (UPP)
Main characteristics of the used UPP are:
• DSP by Texas Instruments, LEAD3 PH2+ Megacell 16 bit DSP core, 32 bit I/F - max.
speed 200 MHz.
• MCU based on ARM/Thumb 16/32 bit RISC MCU core - max. speed 50 MHz
• Internal 8 Mbit SRAM (PDRAM)
• General purpose USARTs
• SIM card interface
• Accessory interface (ACI)
• Interface control for: keypad, LCD, audio and UEM control
• Handling of RF-BB interface
The UPP is housed in a 144-pin uBGA package (12x12mm, 0.8mm pitch).
In RH-6 the UPP is clocked by a 26MHz frequency from the RF-chip "Mjölner"
This 26MHz-clock frequency is internally sliced down by UPP to 13MHz. This frequency is
then inside UPP multiplied to different frequencies, e.g. 145MHz for the DSP core.
UPP can operate on 4 different voltages; 1.05,1.3,1.5 and 1.8V. The voltage can be pro-
grammed "on the fly" by the SW. For example in standby-mode, 1.3V is used for power
saving, but in active-mode (i.e. call) the voltages is increased to 1.8V to get maximum
performance.
Universal Energy Management (UEM)
RH-6 uses the UEM version so called "UEM_Edge". UEM_Edge is a die shrinked version of
standard UEM's, but with the same functionality.
Main characteristics of UEM's are:
• ACI support
• Audio codec
• 11 Channel A/D converter
• Auxiliary A/D converter
• Real time logic
• 32 kHz crystal oscillator
• SIM interface and drivers
• Security logic
• Storage of IMEI code
• Buzzer and vibra motor drivers
Page 8
Company Confidential
© 2003 Nokia Corporation.
CCS Technical Documentation
Issue 1 10/2003