IEI Technology IOWA-MARK-533-128MB-R10, User Manual

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IOWA-MARK Half-size CPU Card
Page 15
2.5.2 VIA VT82C686B Flash Interface
The IOWA-MARK CompactFlash socket supports standard CF Type I and CF Type II
cards. The chipset flash interface is multiplexed with an IDE interface and can be
connected to an array of industry standard NAND Flash or NOR Flash devices.
2.5.3 VIA VT82C686B Audio Codec 97 (AC’97) Controller
The AC’97 specification v2.3 compliant controller on the chipset is interfaced to a 16-bit
full-duplex AC'97 2.3 RealTek ALC655 codec. The ALC655 is then connected to a 10-pin
audio connector to which an audio kit can easily be connected. The codec meets
performance requirements for audio on PC99/2001 systems. Some of the codec features
are listed below.
Meets Microsoft WHQL/WLP 2.0 audio requirements
16-bit Stereo full-duplex CODEC with 48KHz sampling rate
Complies with AC'97 2.3 specifications
o
Front-Out, Surround-Out, MIC-In and LINE-In Jack Sensing
o
14.318MHz -> 24.576MHz PLL to eliminate crystal
o
12.288MHz BITCLK input
o
Integrated PCBEEP generator to save buzzer
o
Interrupt capability
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 inputs: PCBEEP, PHONE-IN
Two software selectable MIC inputs
Dedicated Front-MIC input for front panel applications (software selectable)
Boost preamplifier for MIC input
LINE input shared with surround output; MIC input shared with Center and
LFE output
Built-in 50mW/20ohm amplifier for both Front-out and Surround-Out
External Amplifier Power Down (EAPD) capability
Power management and enhanced power saving features
Supports Power-Off CD function