Cisco Cisco Explorer Set-top Software Version 2.1 Guida Utente
Chapter 2 Network Status Diagnostic Screens for all Explorer DHCTs
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Com ponent Acrony m s or Descriptions
The following list provides the acronym definition or a description for a component
within the POST Results section.
Acronym
Description
AC3
Digital Audio Compression-3 Decoder
BCM
Application Specific Integrated Circuit (ASIC) for demodulating
the quadrature amplitude modulation (QAM) signal
the quadrature amplitude modulation (QAM) signal
MAC
Media Access Control
RAM
Dynamic Random Access Memory
ROM Cksm
Read-Only Memory Checksum
Ethernet
Ethernet connection
VCXO
Voltage Controlled Crystal Oscillator
Spi
Serial Peripheral Interface (communication among ASICs)
BTSC
BTSC stereo decoder for analog audio
DDS
Analog descrambling ASIC
BGATE
QPSK transceiver (encoding and decoding)
TVP
Test Verification Program
Front Panel
Front panel keys and LEDs
Eagle DRAM
Video memory
FLASH Cksm
Validation that the flash ROM contents are not corrupted
UAST
Universal Asynchronous Receiver Transmitter
NVM
Non-Volatile Memory
l2C
Serial bus for communicating with ASICs
SCSI
Small Computer System Interface
RFModem
Transmitter and receiver for QPSKs