IEI Technology ROCKY-4786EVG, User Manual

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ROCKY-4786EVG CPU Card
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SMIBIOS (DMI) compliant
Console redirection function support
PXE ( P re-Boot E x ecution E nvironment ) support USB booting support
2.16 Operating Temperature and Temperature Control
The maximum and minimum operating temperatures for the ROCKY-4786EVG CPU Board
are listed below.
Minimum Operating Temperature: 0ºC (32°F)
Maximum Operating Temperature: 60°C (140°F)
A cooling fan and heat sink must be installed on the CPU. Thermal paste must be smeared
on the lower side of the heat sink before it is mounted on the CPU. Heat sinks are also
mounted on the northbridge and southbridge chipsets to ensure the operating temperature
of these chips remain low.
2.17 Audio Codec
The ROCKY-4786EVG has an integrated REALTEK ALC202A CODEC. The ALC202A
CODEC is a 16-bit, full-duplex AC'97 Rev. 2.2 compatible stereo audio CODEC designed
for PC multimedia systems, including host/soft audio and AMR/CNR-based designs. Some
of the features of the codec are listed below.
Single-chip audio CODEC with high S/N ratio (>90 dB)
Compliant with AC'97 2.2 & WHQL specifications
Support of S/PDIF out is compliant with AC'97 rev2.2 specifications
Meets performance requirements for audio on PC2001 systems
Meets Microsoft PC99 & WLP 2.0 audio requirements
18-bit Stereo full-duplex CODEC with independent and variable sampling
rate
18-bit ADC and 20-bit DAC resolution
Four analog line-level stereo inputs with 5-bit volume control: LINE_IN,
CD, VIDEO, AUX
High quality differential CD input
Two analog line-level mono input: PC_BEEP, PHONE_IN
Supports double sampling rate (96KHz) of DVD audio playback