Tait TB9100 Service Manual

TB9100 Reciter Service Manual Digital Circuitry 25
© Tait Electronics Limited January 2006
3.3 Reduced Instruction Set Computer (RISC)
Refer to Figure 3.2 on page 26.
3.3.1 Hardware and I/O
The RISC processor engine is a Samsung S3C3410X processor with a
40MHz external clock. It has 4 megabytes of flash memory containing the
following:
■ bootloader
■ application code
■ DSP code
■ non-volatile data
■ 2 megabytes of RAM for run-time variables.
The discrete digital inputs and outputs are as follows:
■ chip select signals to synthesizers
■ out-of-lock signals from synthesizers
■ external reference detection
■ internal/external reference selection
■ Rx Gate output
■ Tx Relay output
■ reciter hex switch
■ reciter alarm LED
■ DIP switch for manufacturing testing
■ debug LEDs
■ fan good input
■ flash programming voltage control.
The RISC has the following serial interfaces:
■ asynchronous serial port for communication with the CCS software and
CCTM
■ serial peripheral interface (SPI) for programming the synthesizers
■ SPI for communication with the network PCB
■ I
2
C for communication with the control panel and other modules in the
subrack.

Tait TB9100 Specifications

General

Brand	Tait
Model	TB9100
Category	Accessories
Language	English