VT1616 Datasheet, PDF (1/40 Pages) List of Unclassifed Manufacturers – 6-Channel AC97 Codec with S/PDIF

VIA
Technologies
Incorporated
VT1616
6-Channel AC97 Codec with S/PDIF
Features
Description
• AC’97 2.2 compliant codec
VIA Technologies’ VT1616^TM 20-bit ¦∆ audio
• 20-bit, stereo ADC and 6-channel stereo DACs
codec conforms to the AC’97 2.2 and S/PDIF
• 1 Hz resolution VSR on all channels
• Integrated IEC958 line driver for S/PDIF output
• S/PDIF compressed digital or LPCM audio out
Output specifications. The VT1616 integrates
Sample Rate Converters on all channels and can be
adjusted in 1Hz increments. There is a provision in
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}
• 4-bit 3D stereo expansion for simulated surround
enhancement to provide a pleasing 3D 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
• External Audio Amplifier Control
3.3V analog supply, power consumption is further
• Low Power consumption mode
• Exceeds Microsoft® WHQL logo requirements
• 3.3V digital, 3.3 or 5V analog power supply
reduced. The primary applications for this part are
desktop and portable personal computers
multimedia subsystems. However, it is suitable for
any system requiring 6-channel audio output for
• 48-pin LQFP small footprint package
home theater systems at competitive prices.
PC_BEEP
PHONE
LINE
CD
VIDEO
AUX
MIC1
MIC2
SYNC
BIT_CLK
SDATA_OUT
SDATA_IN
RESET#
CENTER
+ LFE
PCM OUT
SRC
DAC
VOL
REAR
SURROUND
PCM OUT
SRC
DAC
VOL MUTE
FRONT PCM OUT
SRC
VOL MUTE
DAC
VOL MUTE
VOL MUTE
VOL MUTE
VOL MUTE
VOL MUTE
M
VOL
U
X +20dB
VOL MUTE
AC’97
Digital
Interface
MUTE
M
VOLUME
U
X
/MUTE
Σ
MASTER
VOLUME
Σ 3D
Σ_M
U
X
MONO
VOLUME
Σ
M MASTER
U
INPUT
ADC
X VOLUME
XTL_IN
XTL_OUT
OSC
PCM IN
SRC
Figure 1. Functional Block Diagram
Revision 1.5, October 11, 2002
1
LFE/CENTER
LNL/SR_OUT
LINE_OUT
MONO_OUT
S/PDIF_OUT
Data Sheet