IEI Integration NANO-LX v1.00 - Manual (Page 30)

30 IEI ® Technology, Corp.
2.13 Operating Temperature and Temperature Control
The maximum and minimum operating temperatures for the NANO-LX CPU Board are
listed below.
Minimum Operating Temperature: 0ºC (32°F)
Maximum Operating Temperature: 60°C (140°F)
A cooling heat sink is installed on the CPU. Thermal paste is smeared on the lower side of
the heat sink before it is mounted on the CPU. A heat sink is also mounted on the system
chipset to ensure the operating temperature of the chips remain low.
2.14 Audio Codec
The NANO-LX has an integrated REALTEK ALC203 CODEC. The 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. ALC203
features are listed below.
Single chip with high S/N ratio (>100 dB)
Meets performance requirements for audio on PC2001 systems
Meets Microsoft WHQL/WLP 2.0 audio requirements
20-bit DAC and 18-bit ADC resolution
18-bit Stereo full-duplex CODEC with independent and variable sampling
rate
Complies with AC'97 2.3 specifications
o
LINE/HP-OUT, MIC-IN and LINE-IN sensing
o
14.318MHz -> 24.576MHz PLL saves crystal
o
12.288MHz BITCLK input can be consumed
o
Integrated PCBEEP generator to save buzzer
o
Interrupt capability
o
Page registers and Analog Plug & Play
Support of S/PDIF out is fully compliant with AC'97 rev2.3 specifications
Three analog line-level stereo inputs with 5-bit volume control: LINE_IN,
CD, AUX
High quality differential CD input
Two analog line-level mono input: PCBEEP, PHONE-IN