Installation Manual

Table Of Contents
3.4
Station Control Subsystem
The SLR 1000 Repeater Station Control Subsystem circuitry performs the digital signal processing,
data formatting, and audio routing for the station and provides the external interfaces to the rest of the
site.
The Station Control Subsystem is described in this section. A general description, identification of
controls, indicators, and inputs/outputs, a functional block diagram, and functional theory of operation
are provided.
The Station Control consists of seven main ICs:
Texas Instrument DM8148 Host/DSP Processor
EMMC Flash memory
DDR3 memory
Texas Instruments Power Management IC
NOR Flash
TI AIC3204 Codec
General controller functionality includes:
Data and Control interface to the transceiver ICs
Audio interface with CODEC IC
UART interface to expansion board
Intermodule communication (SPI, I2C)
Ethernet port
USB Device port
External physical interfaces (connectors, LEDs, external references, and so on.)
Station Reference Control
Return to Process
SLR 1000 Transceiver Board on page 49
Related Links
Station Control Audio on page 54
Station Control Interface on page 55
3.4.1
Station Control Audio
The analog audio stages of the SLR 1000 Repeater Station Control Audio are used exclusively for
external accessories connected through the bottom RJ-45 accessory connector.
The critical components of the audio circuit are the TI DM8148 processor and a Texas Instruments
AIC3204 dual channel audio codecs. Figure 12: SLR 1000 Repeater Audio Block Diagram on page
55 details the specific interconnects between the critical components.
MN003557A01-AF
Chapter 3: SLR 1000 Transceiver Board
54