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PDF YMF743 Data sheet ( Hoja de datos )
| Número de pieza | YMF743 | |
| Descripción | Audio CODEC | |
| Fabricantes | YAMAHA CORPORATION | |
| Logotipo |  |
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YMF743
AC’97 Revsion2.1 Audio CODEC
with Digital Audio I/F
OVERVIEW
YMF743 is an AC’97 Audio CODEC LSI, which is fully compliant with the industry standard “Audio
CODEC ’97” component specification (Revision 2.1).
Different from former AC’97, YMF743 supports new features like SPDIF OUT and Zoomed Video Port.
Without using a digital controller, these new features can be enhanced in the AC’97 sound system that has an
ICH controller built-in chipset.
Low power consumption is supported not only in the normal mode but can be controlled in the power-down
mode.
FEATURES
• AC’97 Revision 2.1 Compliant
• Exceeds PC98 / PC99 Audio Performance Requirements
• Analog Inputs :
- 4 Stereo Inputs: LINE, CD, VIDEO, AUX
- 2 Monaural Inputs: Speakerphone and PC BEEP Inputs
- 2 Independent Microphone Inputs
• PC BEEP can directly output to Line Out
• Internal +20dB amplifier circuitry for microphone
• Analog Outputs : Stereo LINE Output, True LINE Level and Monaural Output
• Supports Zoomed Video Port
• Supports Consumer IEC958 Output Port (SPDIF OUT)
• Supports 3D Enhancement (Wide Stereo), and Bass / Treble control
• Multiple CODEC Capability
• Programmable Power Down Mode
• Supports EAPD (External Amplifier Power Down)
• Power Supplies : Analog 5.0V, Digital 3.3V or 5.0V
• 48-Pin SQFP Package (YMF743-S)
YAMAHA CORPORATION
YMDF7e4c3eCmATbAeLO3G, 1998
CATALOG No.:LSI-4MF743A4
December 18, 2000
1 page  
YMF743
BLOCK DIAGRAM
VREF
RESET#
SYNC
BIT_CLK
SDATA_OUT
SDATA_IN
AC’97
digital
I/F
EAPD (DIT)
TX
UDS
DIT
A/D
A/D
LPBK
PCM L
32step
PCM R
32step
ZV L
32step
ZV R
32step
Reserved / ID0#
EXT24M / ID1#
ZV_LR / DIT
ZV_SIN
/ Reserved
ZV_BCK
/ Reserved
MSEL
ID0#
ID1#
DIT
ZV_LR
ZV_SIN
ZV_BCK
EXT24M
ZV
Port
Record R
16step
Record L
16step
PHONE
32step
AUX
32step
VIDEO
32step
CD
32step
LINE
32step
MIC
32step
PC Beep
16step
XTL_IN
XTL_OUT
Right
Left
3D
tone
POP
0dB/
+20dB
MS
CD Right
CD Left
BUF
MIC1
MIC2
LINE_IN_R
LINE_IN_L
CD_R
CD_GND
CD_L
VIDEO_R
VIDEO_L
AUX_R
AUX_L
PHONE
MIX
Monaural
32step
Master L
32step
Master R
32step
RESET#
MONO_OUT
PC_BEEP
LINE_OUT_L
LINE_OUT_R
LNLVL_OUT_L
LNLVL_OUT_R
5 December 18, 2000
5 Page 
YMF743
26h : Power Down (Read/Write, Default: 000xh)
D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
EAPD - PR5 PR4 PR3 PR2 PR1 PR0 - - - - REF ANL DAC ADC
EAPD............This bit controls the state of EAPD (No.47) pin.
“0” : Low
“1” : High
PR5 ...............Keep this bit to “0”.
PR4 ...............This bit controls the power state of the AC-Link.
“0” : Normal
“1” : Powar down
PR3 ...............This bit controls the power state of the analog mixer.
“0” : Normal
“1” : Powar down (Vref off)
PR2 ...............This bit controls the power state of the analog mixer.
“0” : Normal
“1” : Powar down (Vref still on)
PR1 ...............This bit controls the power state of the D/A converter.
“0” : Normal
“1” : Powar down
PR0 ...............This bit controls the power state of the A/D converter.
“0” : Normal
“1” : Powar down
REF...............This bit is Read Only, and indicates the state of Vref.
“0” : Ground level
“1” : 2.5V
ANL..............This bit is Read Only, and indicates the state of the analog mixer.
“0” : The analog mixer does not work.
“1” : The analog mixer works normally.
DAC..............This bit is Read Only, and indicates the state of the D/A converter.
“0” : The D/A converter does not work.
“1” : The D/A converter works normally.
ADC..............This bit is Read Only, and indicates the state of the A/D converter.
“0” : The A/D converter does not work.
“1” : The A/D converter works normally.
Note) When YMF743 is the Secondary CODEC, PR4 is not cleared by Warm Reset.
11 December 18, 2000
11 Page | ||
| Páginas | Total 24 Páginas | |
| PDF Descargar | [ Datasheet YMF743.PDF ] | |
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