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ALC101
REALTEK/AVANCE LOGIC, INC. TWO CHANNEL AC’97 AUDIO CODEC ALC101
1. Features........................................................................ 2 2. General Description .................................................... 2 3. Block Diagram............................................................. 3 4. Pin Assignments .......................................................... 4 5. Pin Description ............................................................ 5 5.1 Digital I/O Pins ...................................................... 5 5.2 Analog I/O Pins...................................................... 5 5.3 Filter/Reference...................................................... 6 5.4 Power/Ground ........................................................ 6 5.5 Others..................................................................... 6 6. Registers....................................................................... 7 6.1 Mixer Registers ...................................................... 7 6.2 MX00 Reset ........................................................... 8 6.3 MX02 Master Volume (LINE-OUT) ..................... 8 6.4 MX0A PCBEEP Volume....................................... 9 6.5 MX0C PHONE Volume ........................................ 9 6.6 MX0E MIC Volume .............................................. 9 6.7 MX10 LINE_IN Volume ..................................... 10 6.8 MX12 CD Volume............................................... 10 6.9 MX16 AUX Volume............................................ 10 6.10 MX18 PCM_OUT Volume................................ 11 6.11 MX1A Record Select ......................................... 11 6.12 MX1C Record Gain ........................................... 12 6.13 MX20 General Purpose Register ....................... 12 6.14 MX22 3D Control .............................................. 12 6.15 MX26 Powerdown Control/Status ..................... 13 6.16 MX28 Extended Audio ID................................. 13 6.17 MX7C VENDOR ID1....................................... 14 6.18 MX7E VENDOR ID2....................................... 14 7. Electrical Characteristics ......................................... 15 7.1 DC Characteristics ............................................... 15 7.1.1 Absolute Maximum Ratings......................... 15 7.1.2 Threshold Hold Voltage ............................... 15 7.1.3 Digital Filter Characteristics....................... 15 7.2 AC Timing Characteristics................................... 16 7.2.1 Cold Reset .................................................... 16 7.2.2 Warm Reset .................................................. 16 7.2.3 AC-Link Clocks ........................................... 17 7.2.4 Data Output and Input Times ....................... 18 7.2.5 Signal Rise and Fall Times........................... 19 7.2.6 AC-Link Low Power Mode Timing ............. 20 7.2.7 ATE Test Mode ............................................ 21 7.2.8 AC-Link IO Pin Capacitance and Loading .. 21 7.2.9 BIT-CLK and SDATA-IN State................... 21 8. Analog Performance Characteristics ...................... 22 9. Design Suggestions.................................................... 23 9.1 Clocking............................................................... 23 9.2 AC-Link ............................................................... 23 9.3 Reset..................................................................... 23 9.4 CD Input .............................................................. 24 9.5 Odd Addressed Register Access .......................... 24 9.6 Power-down Mode............................................... 24 9.7 Test Mode ............................................................ 24 9.7.1 ATE In Circuit Test Mode............................ 24 9.7.2 Vendor Specific Test Mode.......................... 24 10. Application Circuit ................................................. 25 10.1 48-pin LQFP Filter Connection Diagram .......... 25 10.2 20-pin SOP Filter Connection Diagram............. 25 11. Mechanical Dimensions .......................................... 26 11.1 LQFP-48 ............................................................ 26 11.2 SOP-20............................................................... 27
2001/12/5
1
Rev.1.24
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ALC101
1. Features
Single chip audio CODEC with high S/N ratio Compliant with AC’97 2.2 specification 16-bit stereo full-duplex CODEC with fixed 48KHz sampling rate 3 analog line-level stereo inputs with 5-bit volume control: LINE-IN, CD-IN, AUX-IN 1 analog line-level mono input: PHONE-IN 1 MIC input Power management 3D Stereo Enhancement LINE output with 50mW/20Ω headphone driver External Amplifier power down capability Power supply: Digital: 3.3V Analog: 5V/3.3V Clocking by external 14.318MHz or 24.576MHz source to save crystal Standard 48-pin LQFP Package and 20-pin SOP
2. General Description
The ALC101 is an 18-bit, full duplex AC'97 2.2 compatible stereo audio CODEC designed for PC multimedia systems, including host/soft audio and AMR/CNR based designs. The ALC101 AC'97 CODEC supports multiple CODEC extensions with independent variable sampling rates and built-in 3D effects. The ALC101 CODEC provides a pair of stereo outputs with independent volume controls and multiple stereo and mono inputs, along with flexible mixing, gain and mute functions to provide a complete integrated audio solution for PCs. The digital interface circuitry of the ALC101 CODEC operates from a 5V/3.3V power supply with EAPD (External Amplifier Power Down) control for use in notebook and PC applications. The ALC101 integrates a 50mW/20ohm headset audio amplifier into the CODEC, saving BOM costs. The ALC101 CODEC supports host/soft audio from Intel 810/815/820/845 chipsets as well as audio controller based VIA/SIS/ALI chipsets. Bundled Windows series drivers (Win95/98/ME/2000/XP/NT) and sound effect utilities (supporting Karaoke, 26-kind of environment sound emulation, 5-band equalizer) provide an excellent entertainment package for PC users. Finally, internal PLL circuits generate required timing signals, eliminating the need for external clocking devices.
2001/12/5
2
Rev.1.24
www.DataSheet4U.com
2001/12/5
DAC MX0A MX0C RESET# +20dB MX0E.6 MX10 3D MX20.13 MX22 MX12 MX16 MX02 Master Volume
0 1
PCM out MX18
PC-BEEP
3. Block Diagram
PHONE MX0E OP Amp
MIC
LINE-IN
LINE-OUT
CD-IN
AUX-IN
Mixer Function Diagram:
3
stereo mix mono mix phone mic M line U X CD aux MX1A Record Gain MX1C
mono analog stereo analog stereo digital
PCM in ADC
ALC101
Rev.1.24
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ALC101
4. Pin Assignments
LQFP-48:
TEST EAPD XTLSEL NC NC NC AVss2 NC NC NC AVdd2 NC DVdd1 XTL-IN XTL-OUT DVss1 SDATA-OUT BIT-CLK DVss2 SDATA-IN DVdd2 SYNC RESET# PCBEEP
48 47 46 45 44 43 42 41 40 39 38 37 1 2 3 4 5 6 7 8 9 10 11 12
36
35 34 33 32 31 30 29 28 27 26 25
ALC101
LINE-OUT-R LINE-OUT-L NC NC NC NC AFILT2 AFILT1 Vrefout Vref AVss1 AVdd1
13 14 15 16 17 18 19 20 21 22 23 24
SOP-20:
AFILT1
LOUT-R
LOUT-L
AFILT2
LINE-R
LINE-L 12 9 CD-GND
DVDD
AVSS
AVDD
20
19
18
17
16
15
14
13
11
ALC101T
1 2 3 4 5 6 7 8 10
XTL-IN
RESET#
SDOUT
SDIN
DVSS
BCLK
2001/12/5
4
SYNC
CD-L
CD-R
MIC
PHONE AUX-L AUX-R NC NC CD-L CD-GND CD-R MIC NC LINE-L LINE-R
Rev.1.24
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ALC101
5. Pin Description
I: Analog or digital input O: Analog or digital output P: Power pin or ground pin
5.1 Digital I/O Pins
Name RESET# XTL-IN XTL-OUT SYNC BIT-CLK SDATA-OUT SDATA-IN XTLSEL EAPD TEST IO I I O I O I O I O I Pin No (LQFP-48) 11 2 3 10 6 5 8 46 47 48 Pin No (SOP-20) 7 1 6 4 3 5 Description AC'97 master H/W reset Crystal input pad Crystal output pad Sample Sync (48Khz) Bit clock output (12.288Mhz) Serial TDM AC97 output Serial TDM AC97 input Crystal Select External Amplifier power down control Enable test function Characteristic Definition Schmitt trigger input Crystal input pad (24.576MHz / 14.318MHz) Crystal output pad Schmitt trigger input CMOS input/output Vt=0.35Vdd Schmitt trigger input CMOS output Internal pulled high (At least 20K ohm) 2mA CMOS output Internal pull high, refer to session 5.7.3 for detail information.
5.2 Analog I/O Pins
Name PCBEEP PHONE AUX-L AUX-R CD-L CD-GND CD-R MIC LINE-L LINE-R LINE-OUTL LINE-OUTR IO I I I I I I I I I I O O Pin No (LQFP-48) 12 13 14 15 18 19 20 21 23 24 35 36 Pin No (SOP-20) 8 9 10 11 12 13 18 19 Description Speaker phone input Mono phone input AUX Left channel AUX Right channel CD audio Left channel CD audio analog GND CD audio Right channel Mic input Line input Left channel Line input Right channel Line-Out Left channel Line-Out Right channel Characteristic Definition Analog input (1Vrms), Rin=8K Analog input (1Vrms), Rin=8K Analog input (1Vrms), Rin=16K Analog input (1Vrms), Rin=16K Analog input (1Vrms), Rin=16K Analog input (1Vrms), Rin=16K Analog input (1Vrms), Rin=16K Analog input (1Vrms), Rin=8K Analog input (1Vrms), Rin=32K Analog input (1Vrms), Rin=32K Analog output (1.7Vrms with AMP), Rout=10 Analog output (1.7Vrms with AMP), Rout=10
2001/12/5
5
Rev.1.24
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ALC101
5.3 Filter/Reference
Name VREF VREFOUT AFILT1 AFILT2 IO O Pin No (LQFP-48) 27 28 29 30 Pin No (SOP-20) 16 17 Description Reference voltage Ref. voltage out with 5mA drive ADC anti-alias Filter 1 ADC anti-alias Filter 2 Characteristic Definition Analog output Analog output (2.25V – 2.75V) 1000pf to AGND 1000pf to AGND
5.4 Power/Ground
Name AVDD1 AVDD2 AVSS1 AVSS2 VDD1 VDD2 VSS1 VSS2 IO I I I I I I I I Pin No (LQFP-48) 25 38 26 42 1 9 4 7 Pin No (SOP-20) 14 15 20 2 Description Analog VDD (5.0V) Analog VDD (5.0V) Analog GND Analog GND Digital VDD ( 3.3V) Digital VDD ( 3.3V) Digital GND Digital GND Characteristic Definition
5.5 Others
Name NC IO Pin No (LQFP-48) 16,17,31,32 ,33,34,37,3 9,40,41,43, 44,45 Pin No (SOP-20) Description No Connection. Characteristic Definition
2001/12
