Instruction Manual

Trusted
TM
AN-T80020 Diagnostics Procedure
Issue 12 Feb 11 AN-T80020 39
Glossary
A/D Analogue to Digital Converter (or ADC)
APP Module Application firmware
ASCII Standard text character codes
ASIC Application Specific Integrated Circuit
BOOT Initial code run by module on startup, or startup state
BSU Bus Slave Unit; protocol circuit communicating to the MP over the IMB
BTM Bottom (of an output switch pair)
CLI Command Line Interpreter; text based interfac
e to system components (human and
internal)
CONFIG A slice is reading its calibration and configuration data.
CRC Cyclic Redundancy Check; data error detection
D/A Digital to Analogue Converter (or DAC)
DSP Digital Signal Processor, used on the HIU
FCR Fault Containment Region
FET Field effect transistor, used in output circuits
FIA Field Interface ASIC; processor controlling I/O circuits
FIU Field Interface Unit
FLASH Permanent writeable memory for module firmware application
FPGA Field Programmable Gate Array
GFSS Group Fail Safe Switches; backup protection on outputs
HIA Host Interface ASIC, communicates to MP over IMB
HIU Host Interface Unit; circuit connecting the module to the IMB
HKAD Housekeeping A/D Converter: reads the environmental d
ata displayed in HKEEPING
equipment board in the toolset application
HOIU Host Output Interface Unit
ID Identity code
IFIA Input circuit field interface ASIC
IFIU Input Field Interface Unit
IHIA Input Host Interface Adapter
IMB Inter'Module Bus
IMON Current Monitor
ISL Inter-Slice Link
LRAM Intermediate memory area in MP for IMB data
MP Main Processor
OFFLINE A slice has been powered down deliberately.
OFIA Output circuit field interface ASIC
OFIU Output Field Interface Unit