Motorola SSETM 5000 - Manual (Page 40)

November 11, 2004 6881094C12-A
2-18 Theory of Operation: VOCON Board
• Controller and Memory: The dual-core processor (U401) with the microcontroller unit (MCU)
and a digital signal processor (DSP) in a single integrated circuit (IC) package, the SRAM
(U403) and Flash (U402) memory devices.
• Audio and Power: The GCAP II (U501), a 5 Vdc linear regulator (U505), a 1.55 Vdc linear
regulator, the audio pre-amplifier (U502), the audio power amplifier (U503), and the dual
EEPOT (U509).
• Interface Support: The digital-support IC (U301) (Flipper), ESD protection circuitry, and side
connector interface circuitry.
The connector symbols represent the following:
• Transceiver board connector
• Universal flex connector
• Internal speaker and microphone flex connector
• Control top flex connector
• Liquid-crystal display (LCD) board connector
• Encryption module connector (optional)
Figure 2-7. VOCON Board Block Diagram
2.5.1 Interconnections
2.5.1.1 Transceiver Board Connector P201
This is a 26-pin compression connector that interfaces between the VOCON board and the
transceiver board. See
Section 2.4.1.2: “VOCON Connector P1” on page 2-7 for a detailed
description of the interface between the VOCON and transceiver boards through P201.
2.5.1.2 Universal Flex Connector J102
This is a 40-pin connector that mates with the universal flex on the housing. A majority of the lines on
the connector are for user interface: emergency and side buttons (pin 14), monitor button (pin 17),
secure/clear switch (pin 23), channel switch (pins 24, 25, 26, and 27), volume knob (pin 31), and the
three-position toggle switch (pin 34). The LEDs on the universal flex are controlled through pins 20,
Dual-Core
Processor
MCU & DSP
SRAM
FLASH
Memory
CONTROLLER & MEMORY
GCAP II
& Discrete
Voltage
Regulators
Audio
EEPOT
Pre-amp &
Power Amp
AUDIO & POWER
Digital Support IC
Clocks & Side
Connector Support
VOCON
Board
Control Top
Display
Encryption
Transceiver
Board
Universal/
Accessory
Connector
ESD Protection &
Side Connector
Circuitry
INTERFACE SUPPORT
Internal
Speaker &
Microphone
MAEPF-27533-B