IEI Integration WAFER-LX v1.22 - Manual (Page 38)

WAFER-LX Motherboard
Page 20
2.16 Operating Temperature and Temperature Control
The maximum and minimum operating temperatures for the WAFER-LX are listed below.
ƒ Minimum Operating Temperature: 0ºC (32°F)
ƒ 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 WAFER-LX has an integrated RealTek ALC203 codec. The RealTek ALC203 is a
20-bit DAC and 18-bit ADC full-duplex AC'97 2.3 compatible stereo audio CODEC
designed for PC multimedia systems, including host/soft audio, and AMR/CNR based
designs. The codec meets performance requirements for audio on PC99/2001 systems
ƒ Single chip with high S/N ratio (>100 dB)
ƒ Meets performance requirements for audio on PC2001 systems
ƒ Meets Microsoft WHQL/WLP 2.0 audio requirements
ƒ 20-bit DAC and 18-bit ADC resolution
ƒ 18-bit Stereo full-duplex CODEC with independent and variable sampling rate
ƒ Complies with AC'97 2.3 specifications
o LINE/HP-OUT, MIC-IN and LINE-IN sensing
o 14.318 MHz -> 24.576 MHz PLL saves crystal
o 12.288 MHz BITCLK input can be consumed
o Integrated PCBEEP generator to save buzzer
o Interrupt capability
o Page registers and Analog Plug & Play
ƒ Support of S/PDIF out is fully compliant with AC'97 rev2.3 specifications
ƒ Three analog line-level stereo inputs with 5-bit volume control: LINE_IN, CD,
AUX
ƒ High quality differential CD input
ƒ Two analog line-level mono input: PCBEEP, PHONE-IN
ƒ Supports double sampling rate (96 KHz) of DVD audio playback