Document
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VIA Technologies Incorporated
Features
• • • • • • • • • • • • • • •
VT1616
6-Channel AC97 Codec with S/PDIF
Description
AC’97 2.2 compliant codec VIA Technologies’ VT1616TM 20-bit ¦∆ audio codec conforms to the AC’97 2.2 and S/PDIF 20-bit, stereo ADC and 6-channel stereo DACs Output specifications. The VT1616 integrates 1 Hz resolution VSR on all channels Sample Rate Converters on all channels and can be Integrated IEC958 line driver for S/PDIF output adjusted in 1Hz increments. There is a provision in S/PDIF compressed digital or LPCM audio out hardware for down-mixing the 6 channels into Hardware downmix option to 2 channels stereo when only two end points are available. The ADC DC removal for removing recording white noise analog mixer circuitry integrates a stereo enhancement to provide a pleasing 3D surround 4-bit 3D stereo expansion for simulated surround sound effect for stereo media. This codec is 4 stereo, 2 mono analog line-level inputs designed with aggressive power management to Second line-level output with volume control achieve low power consumption. When used with a 3.3V analog supply, power consumption is further External Audio Amplifier Control reduced. The primary applications for this part are Low Power consumption mode desktop and portable personal computers Exceeds Microsoft® WHQL logo requirements multimedia subsystems. However, it is suitable for 3.3V digital, 3.3 or 5V analog power supply any system requiring 6-channel audio output for home theater systems at competitive prices. 48-pin LQFP small footprint package
CENTER + LFE PCM OUT REAR SURROUND PCM OUT PC_BEEP PHONE FRONT PCM OUT SRC LINE CD VIDEO AUX MIC1 MIC2 SYNC BIT_CLK SDATA_OUT SDATA_IN RESET#
M U X
SRC
DAC
VOL
MUTE
LFE/CENTER
SRC
DAC
M U X
VOL VOL
MUTE MUTE
VOLUME /MUTE MASTER VOLUME
LNL/SR_OUT
Σ
MUTE MUTE MUTE MUTE MUTE MUTE
LINE_OUT
DAC
VOL VOL VOL VOL VOL
Σ
3D
Σ
M U X
MONO VOLUME
MONO_OUT
VOL +20dB
VOL
Σ
M U X MASTER INPUT VOLUME
AC’97 Digital Interface
ADC
XTL_IN XTL_OUT
OSC
PCM IN
SRC S/PDIF_OUT
Figure 1. Functional Block Diagram
Revision 1.5, October 11, 2002 1 Data Sheet
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VT1616 6-Channel AC97 Codec with S/PDIF
© VIA Technologies, Inc., 2000, 2001, 2002. All Rights Reserved.
VIA TECHNOLOGIES PRODUCTS ARE NOT AUTHORIZED FOR, AND SHOULD NOT BE USED WITHIN, LIFE SUPPORT SYSTEMS OR NUCLEAR FACILTY APPLICATIONS WITHOUT THE SPECIFIC WRITTEN CONSENT OF VIA TECNOLOGIES, Inc. Life support systems are those intended to support or sustain life, and show failure to perform when used as directed can reasonably expect to result in personal injury or death. Nuclear facilities are those involved in the production, handling, use, storage, disposal, or any other activity involving fissionable materials or their waste products. The VIA Technologies logo is a trademark of VIA Technologies, Inc. All other trademarks referenced in this document are owned by their respective companies. VIA Technologies, Inc. believes the information contained herein to be correct at the time of the publication. The information is provided “AS IS” without warranty of any kind (expressed or implied). No responsibility is assumed by VIA Technologies, Inc. for the use of this information, nor infringements of patents or other rights of third parties. VIA Technologies, Inc. reserves the right to make changes at any time, without prior notice, to improve and supply the best possible product and is not responsible and does not assume any liability for misapplication or use outside the limits specified in this document. VIA Technologies provides no warranty for the use of its products and assumes no liability for errors contained in this document.
Contact Information US Office 940 Mission Court Fremont, CA 94539 USA Tel: (510) 687-4600 Fax: (510) 687-4654 Web: www.viatech.com Taiwan Office 8th Floor, No. 533 Chung-Cheng Road, Hsien-Tien Taipei, Taiwan ROC Tel: 886 (2) 2218-5452 Fax: 886 (2) 2218-5453 Web: www.via.com.tw
Revision 1.5, October 11, 2002
2
Data Sheet
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VT1616 6-Channel AC97 Codec with S/PDIF
LNL/SR_OUT_R
LNL/SR_OUT_L
CENTER_OUT
48
47
46
45
44
43
42
41
40
39
DVCC1 XTL_IN XTL_OUT DGND1 SDATA_OUT BIT_CLK DGND2 SDATA_IN DVCC2 SYNC RESET# PC_BEEP
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
38
37 36 35 34 33 32
MONO_OUT
SPDIF_OUT
LFE_OUT
AGND2
AVCC2
EAPD
ID1
ID0
NC
LINE_OUT_R LINE_OUT_L NC NC CAP2 NC AFLT2 AFLT1 VREF_OUT VREF AGND1 AVCC1
VT1616
31 30 29 28 27 26 25
PHONE
VIDEO_L
CD_L
LINE_IN_L
AUX_L
CD_GND
MIC1
VIDEO_R
CD_R
MIC2
Figure 2. Pin Diagram - 48-Pin LQFP
Revision 1.5, October 11, 2002
3
LINE_IN_R
AUX_R
Data Sheet
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VT1616 6-Channel AC97 Codec with S/PDIF
Table 1. Pin Description
Pin #
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36
Symbol
DVCC1 XTL_IN XTL_OUT DGND1 SDATA_OUT BIT_CLK DGND2 SDATA_IN DVCC2 SYNC RES.