User's Manual

9/29/2004 OV4F2
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BCM2035 User Manual
04/23/03
Broadcom Corporation
Page iv Document 2035-UM100-R
RAM, ROM, and Patch Memory ............................................................................................................13
System Control ...........................................................................................................................................14
System Clock.........................................................................................................................................14
External Reset .......................................................................................................................................14
External TDD Switch Control.................................................................................................................14
Peripheral Transport Unit .......................................................................................................................... 14
PCM Interface........................................................................................................................................14
System Diagram ....................................................................................................................................15
Slot Mapping..........................................................................................................................................16
Frame Sync ...........................................................................................................................................16
Data Formatting.....................................................................................................................................16
USB Interface ........................................................................................................................................16
UART..................................................................................................................................................... 17
Auto-Baud Rate Detection..............................................................................................................18
Section 3: BCM2035 Usage Models................................................................................. 19
Mobile Phone Usage Model .......................................................................................................................19
PC Product Usage Model ...........................................................................................................................21
Section 4: Hardware Configuration ................................................................................. 22
Mode Pins....................................................................................................................................................22
System Clock Configuration......................................................................................................................23
Crystal Oscillator ...................................................................................................................................23
External Frequency Reference..............................................................................................................24
Low Power Oscillator .................................................................................................................................24
LPO Clock Interface ..............................................................................................................................25
Transport Configuration ............................................................................................................................26
PCM Configuration .....................................................................................................................................28
PCM Hardware Signals .........................................................................................................................28
EEPROM Configuration..............................................................................................................................29
On-Chip Voltage Regulator........................................................................................................................30
Section 5: Software Configuration .................................................................................. 32
Introduction.................................................................................................................................................32
Hardware Power-Up Sequence..................................................................................................................33
Boot ROM Power-Up Sequence ................................................................................................................33