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PDF STAC9752 Data sheet ( Hoja de datos )
| Número de pieza | STAC9752 | |
| Descripción | (STAC9752 / STAC9753) TWO-CHANNEL AC97 2.3 CODECS | |
| Fabricantes | IDT | |
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DATASHEET
TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH HEADPHONE STAC9752/9753
DRIVE, SPDIF OUTPUT MICROPHONE & JACK SENSING
Description
IDT's STAC9752/9753 are general purpose 20-bit, full
duplex, audio CODECs conforming to the analog
component specification of AC'97 (Audio CODEC 97
Component Specification Rev. 2.3). The STAC9752/9753
incorporate IDT's proprietary Σ∆ technology to achieve a
DAC SNR in excess of 90dB. The DACs, ADCs and mixer
are integrated with analog I/Os, which include four analog
line-level stereo inputs, two analog line-level mono inputs,
two stereo outputs, and one mono output channel. The
STAC9752/9753 include digital output capability for support
of modern PC systems with an output that supports the
SPDIF format. The STAC9752/9753 are standard
2-channel stereo CODECs. With IDT’s headphone
capability, headphones can be driven without an external
amplifier. The STAC9752/9753 may be used as a
secondary or tertiary CODECs, with STAC9700/21/44/56/
08/84/50/66 as the primary, in a multiple CODEC
configuration conforming to the AC'97 Rev. 2.3
specification. This configuration can provide the true
six-channel, AC-3 playback required for DVD applications.
The STAC9752/9753 communicate via the five AC-Link
lines to any digital component of AC'97, providing flexibility
in the audio system design. Packaged in an AC'97
compliant 48-pin TQFP, the STAC9752/9753 can be placed
on the motherboard, daughter boards, PCI, AMR, CNR,
MDC or ACR cards.
Features
• High performance Σ∆ technology
• AC’97 Rev 2.3 compliant
• 20-bit full duplex stereo ADCs, DACs
• Independent sample rates for ADCs & DACs
• 5-wire AC-Link protocol compliance
• 20-bit SPDIF Output
• Internal Jack Sensing on Headphone and Line_Out
• Internal Microphone Input Sensing
• Digital PC Beep Option
• Extended AC’97 2.3 Paging Registers
• Adjustable VREF amplifier
• Digital-ready status
• General purpose I/Os
• Crystal Elimination Circuit
• Headphone drive capability (50 mW)
• 0dB, 10dB, 20dB, and 30dB microphone boost
capability
• +3.3 V (STAC9753) and +5 V (STAC9752) analog
power supply options
• Pin compatible with the STAC9700, STAC9721,
STAC9756
• 100% pin compatible with STAC9750 and
STAC9766
• IDT Surround (SS3D) Stereo Enhancement
• Energy saving dynamic power modes
• Multi-CODEC option (Intel AC'97 rev 2.3)
• Six analog line-level inputs
• 90dB SNR Line to Line
• SNR > 89dB through Mixer and DAC
IDT™
1 STAC9752/9753
TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH HEADPHONE DRIVE, SPDIF OUTPUT MICROPHONE & JACK SENSING
V 3.3 101006
1 page  
STAC9752/9753
TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH HEADPHONE DRIVE, SPDIF OUTPUT MICROPHONE & JACK SENSING
LIST OF FIGURES
Figure 1. Block Diagram ................................................................................................................................. 8
Figure 2. Cold Reset Timing ......................................................................................................................... 16
Figure 3. Warm Reset Timing ....................................................................................................................... 16
Figure 4. Clocks Timing ............................................................................................................................... 17
Figure 5. Data Setup and Hold Timing ......................................................................................................... 18
Figure 6. Signal Rise and Fall Times Timing ................................................................................................ 18
Figure 7. AC-Link Low Power Mode Timing .............................................................................................. 19
Figure 8. ATE Test Mode Timing ............................................................................................................... 19
Figure 9. Typical Connection Diagram .......................................................................................................... 20
Figure 10. Split Independent Power Supply Operation ................................................................................. 22
Figure 11. AC-Link to its Companion Controller ........................................................................................... 23
Figure 12. CODEC Clock Source Detection .................................................................................................. 24
Figure 13. STAC9752/9753 Powerdown Timing .......................................................................................... 27
Figure 14. Bi-directional AC-Link Frame with Slot assignments ................................................................... 29
Figure 15. AC-Link Audio Output Frame ...................................................................................................... 33
Figure 16. Start of an Audio Output Frame ................................................................................................... 33
Figure 17. STAC9752/9753 Audio Input Frame ........................................................................................... 36
Figure 18. Start of an Audio Input Frame ...................................................................................................... 36
Figure 19. Bi-directional AC-Link Frame with Slot assignments ................................................................... 41
Figure 20. STAC9752 2-Channel Mixer Functional Diagram ........................................................................ 44
Figure 21. STAC9753 2-Channel Mixer Functional Diagram .......................................................................44
Figure 22. Example of STAC9752/9753 Powerdown/Powerup flow ...........................................................80
Figure 23. Powerdown/Powerup flow with analog still alive ......................................................................... 81
Figure 24. Pin Description Drawing ............................................................................................................... 85
Figure 25. Reflow Profile ..............................................................................................................................90
IDT™
5 STAC9752/9753
TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH HEADPHONE DRIVE, SPDIF OUTPUT MICROPHONE & JACK SENSING
REV 3.3 1206
5 Page 
STAC9752/9753
TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH HEADPHONE DRIVE, SPDIF OUTPUT MICROPHONE & JACK SENSING
2.1.3.
Power Consumption
Parameter
Min Typ
Max
Digital Supply Current
+ 3.3V Digital
- 30 -
Analog Supply Current (at Reset state)
+ 5V Analog
- 35 -
+ 3.3V Analog
- 35 -
Power Down Status (individually asserted) - All PR measurements taken while unmuted.
All paths unmuted
+5V Analog Supply Current
+3.3V Analog Supply Current
+3.3V Digital Supply Current
-
50
44 -
33
+5V Analog Supply Current
42
PR0
+3.3V Analog Supply Current -
39 -
+3.3V Digital Supply Current
22
+5V Analog Supply Current
41
PR1
+3.3V Analog Supply Current -
38 -
+3.3V Digital Supply Current
28
+5V Analog Supply Current
32
PR2
+3.3V Analog Supply Current -
29 -
+3.3V Digital Supply Current
12
+5V Analog Supply Current
23
PR3
+3.3V Analog Supply Current -
19 -
+3.3V Digital Supply Current
12
+5V Analog Supply Current
50
PR4
+3.3V Analog Supply Current -
44 -
+3.3V Digital Supply Current
0.2
+5V Analog Supply Current
50
PR5
+3.3V Analog Supply Current -
44 -
+3.3V Digital Supply Current
12
+5V Analog Supply Current
38
PR6
+3.3V Analog Supply Current -
36 -
+3.3V Digital Supply Current
33
PR0 & PR1
+5V Analog Supply Current
35
+3.3V Analog Supply Current -
35 -
+3.3V Digital Supply Current
12
PR0, PR1, PR2, PR6
+5V Analog Supply Current
+3.3V Analog Supply Current
+3.3V Digital Supply Current
-
5
5-
12
PR0, PR1, PR2, PR3, PR6
+5V Analog Supply Current
0.6
+3.3V Analog Supply Current - 0.6 -
+3.3V Digital Supply Current
12
Unit
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
mA
IDT™
11 STAC9752/9753
TWO-CHANNEL, 20-BIT, AC’97 2.3 CODECS WITH HEADPHONE DRIVE, SPDIF OUTPUT MICROPHONE & JACK SENSING
REV 3.3 1206
11 Page | ||
| Páginas | Total 70 Páginas | |
| PDF Descargar | [ Datasheet STAC9752.PDF ] | |
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