Operating instructions

Section 5
CONTROLLER INFORMATION
1.0 General Controller Block
The controller board is the central interface between the various subsystems of the radio. The
controller section consists of 4 main ICs. These are the OMAP1710 Host/DSP Processor, Flash, DDR
RAM memories and the MAKO Audio/Power Management chip.
Figure 5-1 shows how the controller interfaces with the RF Section and the supporting controls,
switches and display. The Controller, RF sections, volume port, frequency selection switch and the
universal connector are placed on a single “Transceiver” board. LCD Display is mounted directly to
the Transceiver board and keypad is designed on the flex. The Option Board is a separate board that
hosts the line/connections to the flex keypad. The physical interface between the Transceiver board
and keypad board is via flex through board to board connector on the option board.
Figure 5-1: Controller Block Diagram
1.1 OMAP1710 Processor (U1000)
The OMAP processor (U1000) has a dual-core architecture which incorporates a TMS320C55x DSP
core and a high-performance ARM926EJS core. The OMAP is supplied with two voltages: 1.4V for
Core and 1.8V for Peripheral and I/O Interfaces.
OMAP1710
& ME MOR Y
DEVICE S
SPI SSI
RF
LOGIC
REF
CLK
MA K O
SPI MCBSP2
LAYER 1
TIMER
LIN
RE
G
SW
RE
G
CLOCK
PLL
CODEC
MPUIO
DAC
USB
TXCVR
MCBSP1
ON_OFF VOLUME
ON
Logic ADC
AUD
AMP
MIC
AMP
OPTION BOARD
MCBSP1
INT_MIC
INT_SPK
TRANSDUCERS
ACCESSORY
INTER FAC E
EXT_SPK
EXT_MIC
DATA
OPT. SEL
TUNE
OPT
SEL
LCD DISPLAY
LC
D
CTRL
CONTROLLER
Numeric K eys
Navigation Keys
KEYPAD USER BUTTONS & KNOB S
PTT & SIDE BUTTONS
EMERGENCY
FREQ KNOB
VDD
SUPPLY
RF SECTION
B+ = 7.5V
MCBSP1
DATA