November 16, 2006
6881094C31-E
3-16
Transistors Q307 and Q310 form a 3.3 Vdc-to-5 Vdc logic-level shifter for the signal from the FracN
AUX3 pin to the VCOBIC.
3.2
VOCON Board
This section provides a detailed circuit description of the ASTRO XTS 5000 VOCON board.
The VOCON board (
) is divided into the following sections:
• Controller and Memory
• Audio and Power
• Interface Support
3.2.1
Interconnections
The VOCON board interconnection diagram (see
and
) contains three
functional blocks and five connector symbols.
Figure 3-7. VOCON Board Interconnections
SRAM
1MByte
INTERFACE SUPPORT
ESD Protection and
Side Connector
Circuitry
ASIC
Clocks and Side
Connector Support
VOCON
Board
CONTROLLER AND MEMORY
FLASH
8MBytes
Dual-Core
Processor
MCU and DSP
Keypad
22 pins
Display
22 pins
Encryption
40 pins
AUDIO AND POWER
Audio
EEPOT
Pre-amp and
Power Amp
GCAP II
and Discrete
Voltage Regulators
RF
26 pins
Universal
40 pins
MAEPF-27413-A
Summary of Contents for ASTRO XTS-5000
Page 7: ...vi Table of Contents November 16 2006 6881094C31 E Notes ...
Page 11: ...x List of Figures November 16 2006 6881094C31 E Notes ...
Page 17: ...November 16 2006 6881094C31 E xvi CommercialWarranty Notes ...
Page 31: ...November 16 2006 6881094C31 E xxx Portable Radio Model Numbering System Notes ...
Page 83: ...November 16 2006 6881094C31 E 3 44 Theory of Operation Encryption Module ...
Page 135: ...November 16 2006 6881094C31 E 5 44 Troubleshooting Charts Secure Hardware Failure Notes ...
Page 175: ...November 16 2006 6881094C31 E 7 32 Troubleshooting Tables List of Board and IC Signals Notes ...
Page 367: ...November 16 2006 6881094C31 E Glossary 10 Notes ...
Page 373: ...Index 6 November 16 2006 6881094C31 E Notes ...