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PDF VT1616 Data sheet ( Hoja de datos )
| Número de pieza | VT1616 | |
| Descripción | 6-Channel AC97 Codec | |
| Fabricantes | VIA | |
| Logotipo |  |
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VIA
Technologies
Incorporated
VT1616
6-Channel AC97 Codec with S/PDIF
Features
Description
• AC’97 2.2 compliant codec
VIA Technologies’ VT1616TM 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
ΣM
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
1 page  
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VT1616 6-Channel AC97 Codec with S/PDIF
Table 1. Pin Description (continued...)
Pin #
Symbol
Type
Description
37 MONO_OUT O Mono Output
38 AVCC2
P Analog Supply Voltage, 5V or 3.3V
39 LNL/SR_OUT_L O Alternate Left Line Level out or Rear Channel Left
40 NC
– No Connect
41 LNL/SR_OUT_R O Alternate Right Line Level out or Rear Channel Right
42 AGND2
P Analog Ground
43 CENTER_OUT O Center Channel Output
44 LFE_OUT O Low Frequency Effects Output
45 ID0
46 ID1
I Multiple Codec Select (Internal pull-up). Please see Table 5.
I Multiple Codec Select (Internal pull-up). Please see Table 5.
47 EAPD O External Power Amplifier Power Down
48
SPDIF_OUT
I/O
PCM/Non-Audio Sony/Philips Digital I/F Output (Internal pull-up).
If left floating, S/PDIF not implemented reported on 2Ah, bit 2 = “0”
Note: The VT1616 supports +5V or +3.3V analog power supply. For best analog performance use a 5V analog supply. For maximum power
savings use 3.3V for both analog and digital sections. You must use 3.3V as the digital supply. The digital I/Os are NOT 5V tolerant.
Revision 1.5, October 11, 2002
5
Data Sheet
5 Page 
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VT1616 6-Channel AC97 Codec with S/PDIF
Phone Input Volume Control Register (Index 0Ch)
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 Default
Mute – – – – – – – – – – GN4 GN3 GN2 GN1 GN0 8008h
Mute
GN[4:0]
Phone Input Mute Control
“1” : Mute enabled
“0” : Mute disabled
Phone Input Volume Control
These five bits select the gain applied to the Phone Input signal. The gain is programmable from -
34.5dB to 12dB in 1.5dB increments, providing a total of 32 programmable levels. Please refer to
Table 3 on page 14 for details.
Mic Input Volume Control Register (Index 0Eh)
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 Default
Mute – – – – – – – – 20dB – GN4 GN3 GN2 GN1 GN0 8008h
Mute
20dB
GN[4:0]
Mic Input Mute Control
“1” : Mute enabled
“0” : Mute disabled
Mic Boost Control
“1” : Fixed 20dB gain enabled
“0” : Fixed 20dB gain disabled
Mic Input Volume Control
These five bits select the gain applied to the Mic Input signal. The gain is programmable from -
34.5dB to 12dB in 1.5dB increments, providing a total of 32 programmable levels. Please refer to
Table 3 on page 14 for details.
Revision 1.5, October 11, 2002
11
Data Sheet
11 Page | ||
| Páginas | Total 40 Páginas | |
| PDF Descargar | [ Datasheet VT1616.PDF ] | |
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