CMI 9738 Integrated Multi-channel AC`97 CMI9738 4CH Preliminary Technical Brief Universality More Audio Option CMI9738 is a 4CH AC97 CODEC, applicable for Last but not least, CMI9738 provides Sensaura(R) leading MB chipsets of Intel(R), VIA(R), Ali(R), and 3D audio option. In that regard, the audio quality SIS(R)CMI9738 is ideal for PC99-compliant desktops, of notebooks, and home entertainment PCs where expectation. high-quality audio is a must. CMI9738 is fabulous beyond general Features 4CH Playback Intel(R) AC'97(Rev. 2.2) compatible. The specially-designed 4CH hardware architecture of High S/N ratio meets PC 99 requirements. CMI9738 allows all types of south bridge to playback 4CH DAC, applicable for leading 4CH audio, thus helping commonplace south bridge motherboard chipsets. get rid of the limitation of 2CH audio playback Full-duplex CODEC. capability. Built-in earphone buffer. Line-in phonejack share with rear out. Cost-effectiveness As to the cost concern, CMI9738 integrates the earphone buffer, analog CD differential interface, and analog switch for rear channel audio to Line-in. Simply by using 0.1uf decoupling capacitor, CMI9738 meets PC99 frequency response requirements. Alongside offering standard LQFP 48pin packaging option, CMI9738 also offers SOP 24pin packaging, thus helps further reduce the hardware cost. Low-cost 0.1uf capacitors for decoupling. 48 LQFP package(pin to pin compatible with 2-channel CODEC) and 24-lead TSSOP package. D r i v e r s s u p p o r t E A X , E c h o e ff e c t s , WDM version, etc. Microsoft(R) WHQL certified SensauraTMHRTF 3D audio enhancement (optional). Pin Diagram C-MEDIA Electronics Inc. 6F, 100, Sec. 4, Civil Boulevard, Taipei, Taiwan, R.O.C. 106 TEL: 886-2-8773-1100 FAX: 886-2-8773-2211 E-mail:cmedia@ms4.hinet.net Revision Date1/2001 CMI 9738 Integrated Multi-channel AC`97 PIN DESCRIPTIONS 48-Pin LQFP PIN # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Signal Name DVdd1 XTL_IN XTL_OUT DVss1 SDATA_OUT BIT_CLK DVss2 SDATA_IN DVdd2 SYNC RESET# PC_BEEP PHONE AUX_IN_L AUX_IN_R VIDEO_L VIDEO_R CD_L CD_GND CD_R MIC1 MIC2 LINE_IN_L LINE_IN_R PIN # 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 Signal Name AVdd1 AVss1 Vref Vrefout AFILT1 AFILT2 NC NC NC NC LINE_OUT_L LINE_OUT_R MONO_OUT AVdd2 REAR_OUT_L TEST0# REAR_OUT_R AVss2 NC NC RESERVED RESERVED EAPD NC 24-Pin TSSOP PIN # 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Signal Name SDATA_IN SYNC RESET# AUX_IN_L AUX_IN_R CD_L CD_GND CD_R MIC1 LINE_IN_L LINE_IN_R VREF_OUT AFILT1 AFILT2 LINE_OUT_L LINE_OUT_R AVdd TEST0# Vss DVsdd XTL_IN XTL_OUT SDATA_OUT BIT_CLK 1 24 2 23 3 22 4 21 5 20 6 19 7 18 8 17 9 16 10 15 11 14 12 13 C-MEDIA Electronics Inc. 6F, 100, Sec. 4, Civil Boulevard, Taipei, Taiwan, R.O.C. 106 TEL: 886-2-8773-1100 FAX: 886-2-8773-2211 E-mail:cmedia@ms4.hinet.net Revision Date1/2001 CMI 9738 Integrated Multi-channel AC`97 CMI9738 Mixer Block Diagram FRONT OUT PC_BEEP 12 CD_L/R 18, 20 (6, 8) 19 (7) CD_GND LINE_IN_L/R 23, 24 (10, 11) MUX Mixer Block Diagram REAR OUT DAC SRC DAC Noise Cancel VOL 21 (9) 22 MIC2 (LINE_IN/REAR_OUT) MUTE SYNC 10 (2) 6 (24) 5 (23) 8 (1) 11 (3) BIT_CLK SDATA_OUT SDATA_IN RESET# XTL_IN XTL_OUT 2 (21) 3 (22) BOOST (+20dB) VOL MUTE VOL MUTE AC'97 Digital Interface Earphone Buffer 35, 36 (15, 16) LINE_OUT_L/R OSC MUTE 37 Buf MONO_OUT MUX 13 MASTER VOLUME / MUTE MUTE MUX PHONE REAR_OUT_L/R MUTE M U X MIC1 39, 41 MUTE MUX AUX_INL/R Buf MUTE VOL 14, 15 (4, 5) MUTE Record Gain Control PCM IN XX : LQFP-48 (XX) : SSOP-24 MUTE ADC The CMI9738 mixer is designed to the AC'97 specification to manage playback and record of all digital and analog audio sources in the PC environment. These include System audiodigital PCM input and output for business, games, and multimedia CD/DVDanalog CD/DVD-ROM Redbook audio with internal connections to Codec mixer Mono microphonechoice of desktop or headset mic, with programmable boost and gain Speakerphoneuse of system mic & speakers for telephony, DSVD, and video conferencing Stereo line inanalog external line level source from consumer audio, video camera, etc AUX/synthanalog FM or wavetable synthesizer, or other internal source SOURCE FUNCTION CONNECTION PC_BEEP PC beep pass thru from PC beeper output PHONE speakerphone or DLP in from telephony subsystem MIC1 desktop microphone from mic jack MIC2 headset microphone from headset mic jack LINE_IN external audio source from line in jack CD audio from CD-ROM drive cable from CD-ROM AUX upgrade synth or other external source internal connector PCM out digital audio output from AC '97 Controller AC-link Mix out mix of all sources AC `97 internal LINE_OUT stereo mix of all sources (front channel) to output jack REAR_OUT stereo output of rear (surround) channel to output jack MONO_OUT mic or mix for speakerphone or DLP out to telephony subsystem PCM in digital audio input to AC '97 Controller AC-link C-MEDIA Electronics Inc. 6F, 100, Sec. 4, Civil Boulevard, Taipei, Taiwan, R.O.C. 106 TEL: 886-2-8773-1100 FAX: 886-2-8773-2211 E-mail:cmedia@ms4.hinet.net OUTPUT MIX SUPPORTS: *stereo mix of all sources for LINE_OUT *mono mic or mix for MONO_OUT *stereo output for REAR_OUT INPUT MUX SUPPORTS: *any mono or stereo source *mono or stereo mix of all sources Revision Date1/2001 CMI 9738 Integrated Multi-channel AC`97 Circuit Diagram for CMI9738-4CH (48-Pin LQFP) J1 C1 105 L1 Fbead L2 Fbead 2 1 REAR_OUT_R LINE_IN_R C2 C7 101 R3 47K LINE_OUT_R 4 C18 102 C21 104 CD IN C23 104 CD_INL CD_COM MONO_OUT AUX_INL REAR_OUT_R C37 104 C38 104 MONO_OUT AVdd2 REAR_OUT_L TEST0# REAR_OUT_R AVss2 NC NC RESERVED RESERVED EAPD NC/SPDIFO VIDEO_R VIDEO_L VIDEO IN R22 47K PHONE IN GND GND MONO OUT R20 OPEN(0) C52 104 PHONE_IN 4 3 2 1 R24 0 Y1 24.576MHz C53 104 MONO_OUT Internal MODEM Connection C45 20pF C54 101 C55 101 R25 47K C26 C27 102 C28 102 + LINE_IN_R LINE_IN_L MIC2 MIC1 CD_R CD_GND CD_L VIDEO_R VIDEO_L AUX_IN_R AUX_IN_L PHONE LINE_IN_R LINE_IN_L 24 23 22 21 20 19 18 17 16 15 14 13 MICIN XCDR XCDG XCDL VIDEO_R VIDEO_L AUX_INR AUX_INL PHONE_IN +3.3VD 0 MSTRCLK J10 C25 104 ASYNC ARST# PC_BEEP R21 47K CMI9738-LQFP-48 ASDIN C43 101 FRONT OUT OPEN(104) 1 2 3 4 5 6 7 8 9 10 11 12 C42 101 U2 ASDOUT R23 4 3 2 1 C24 104 DVdd1 XTL_IN XTL_OUT DVss1 SDATA_OUT BIT_CLK DVss2 SDATA_IN DVdd2 SYNC RESET# PC_BEEP R19 47K J8 R GND GND L 37 38 39 40 41 42 43 44 45 46 47 48 REAR_OUT_L AUX IN R18 47K C41 101 Vrefout 36 35 34 33 32 31 30 29 28 27 26 25 AUX_INR C31 104 C34 101 2 1 +5VA C30 104 4 3 2 1 C33 101 Fbead CD_INR R15 47K J5 R GND GND L L10 C39 220uF/16V C19 472 LINE_OUT_R LINE_OUT_L NC NC NC NC XADCHR XADCHL Vrefout Vref AVss1 AVdd1 R14 47K Fbead C40 101 LINE_OUT_R LINE_OUT_L C20 104 4 3 2 1 R13 47K L9 J7 LINE_OUT_L C11 105 J3 REAR OUT MICIN MIC IN R GND GND L C51 101 4 3K3 MIN 2 1 C50 101 C36 220uF/16V R9 Fbead C49 105 R4 47K R7 10K 2 1 Fbead L12 REAR_OUT_L +5VA J2 L11 J9 105 LINE IN/REAR OUT C6 101 4 C44 105 LINE_IN_L + 4 ABITCLK C46 20pF C47 104 C48 104 R26 47K +5VA R1 4K7 PC_BEEP C3 104 R2 P1 47K L3 Fbead +12VD + C9 10uF/16V R5 4K7 +3.3VD ASDOUT ARST# + C14 104 C13 10uF/16V MSTRCLK B1 B2 B3 B4 B5 B6 B7 B8 B9 B10 B11 B12 B13 B14 B15 B16 B17 B18 B19 B20 B21 B22 B23 AUDIO_PWRDN MONO_PHONE RSCD RSCD RSCD GND +5Vdual/+5VSB USB_OC# GND USB+ USB- AUDIO_MUTE# GND MONO_OUT/PC_BEEP RSVD RSVD PRIMARY_DN# -12V GND +12V GND +5VD GND S/PDIF_IN GND +3.3Vdual/+3.3VSB GND AC97_SYNC GND AC97_SDATA_IN1 GND AC97_SDATA_IN0 GND AC97_BITCLK GND RSVD RSVD +3.3VD GND AC97_SDATA_OUT AC97_RESET# AC97_SDATA_IN3 GND AC97_SDATA_IN2 GND AC97_MSTRCLK A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 A19 A20 A21 A22 A23 ASYNC R8 OPEN(47) R10 47 ABITCLK AMR BUS C-MEDIA Electronics Inc. 6F, 100, Sec. 4, Civil Boulevard, Taipei, Taiwan, R.O.C. 106 TEL: 886-2-8773-1100 FAX: 886-2-8773-2211 E-mail:cmedia@ms4.hinet.net Revision Date1/2001 ASDIN CMI 9738 Integrated Multi-channel AC`97 Circuit Diagram for CMI9738-4CH (24-Pin SOP) +12VD P1 +5VA U1 78L05 VIN 3 VOUT B1 B2 B3 B4 B5 B6 B7 B8 B9 B10 B11 GND 1 + + C5 104 2 C4 10uF/16V C8 10uF/16V +12VD +3.3VD ASDOUT ARST# + C14 104 C13 10uF/16V MSTRCLK B12 B13 B14 B15 B16 B17 B18 B19 B20 B21 B22 B23 AUDIO_PWRDN MONO_PHONE RSCD RSCD RSCD GND +5Vdual/+5VSB USB_OC# GND USB+ USB- AUDIO_MUTE# GND MONO_OUT/PC_BEEP RSVD RSVD PRIMARY_DN# -12V GND +12V GND +5VD GND S/PDIF_IN GND +3.3Vdual/+3.3VSB GND AC97_SYNC GND AC97_SDATA_IN1 GND AC97_SDATA_IN0 GND AC97_BITCLK GND RSVD RSVD +3.3VD GND AC97_SDATA_OUT AC97_RESET# AC97_SDATA_IN3 GND AC97_SDATA_IN2 GND AC97_MSTRCLK A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 A19 A20 A21 A22 A23 ASYNC R8 OPEN(47) R10 47 ABITCLK AMR BUS J1 C1 4 105 L1 Fbead L2 Fbead 2 1 LINE_IN_R J5 LINE_IN_L C2 R GND GND L 105 LINE IN/REAR OUT C6 101 C7 101 R3 47K R4 47K C30 104 4 3 2 1 C31 104 AUX_INR AUX_INL AUX IN C33 101 C34 101 R18 47K R19 47K +5VA R7 10K J2 4 R9 2 1 3K3 MIN MICIN C11 105 C18 102 C19 472 LINE_OUT_R LINE_OUT_L R GND GND L C20 104 4 3 2 1 C21 104 CD IN C23 104 L9 Fbead L10 Fbead C39 220uF/16V CD_INR 2 1 C40 101 + C36 220uF/16V J3 4 + MIC IN C41 101 J7 FRONT OUT CD_INL CD_COM +3.3VD +5VA R13 47K R14 47K R15 47K U2 ASDIN ASYNC ARST# AUX_INL AUX_INR XCDL XCDG XCDR MICIN LINE_IN_L LINE_IN_R C26 OPEN(104) 1 2 3 4 5 6 7 8 9 10 11 12 SDATA_IN SYNC RESET# AUX_IN_L AUX_IN_R CD_L CD_GND CD_R MIC1 LINE_IN_L LINE_IN_R VREF_OUT C48 104 BIT_CLK SDATA_OUT XTL_OUT XTL_IN DVsdd Vss TEST0# AVdd LINE_OUT_R LINE_OUT_L XADCHR XADCHL 24 23 22 21 20 19 18 17 16 15 14 13 CMI9738-SOP-24 C-MEDIA Electronics Inc. 6F, 100, Sec. 4, Civil Boulevard, Taipei, Taiwan, R.O.C. 106 TEL: 886-2-8773-1100 FAX: 886-2-8773-2211 E-mail:cmedia@ms4.hinet.net C47 104 C24 104 R23 0 ABITCLK ASDOUT MSTRCLK R20 OPEN(0) Y1 24.576MHz C27 102 C28 102 C45 20pF Revision LINE_OUT_R LINE_OUT_L C46 20pF Date1/2001 ASDIN CMI 9738 Integrated Multi-channel AC`97 ORDERING INFORMATION Part Number CMI9738 CMI9738 Package 48-Pin LQFP 24 Pin-TSSOP Outline Dimensions 9mmx7mmx1.6mm 7.9mmx6.5mmx1.1mm Temperature Range Supply Range 0 o C to +70 o C 0 o C to +70 o C DVdd = 3.3V or 5V, AVdd = 5V DVdd = 3.3V or 5V, AVdd = 5V Dimensions shown in inches and mm 48-Lead Thin Plastic Quad Flatpack (LQFP) (ST-48) 24-Lead Plastic TSSOP (RU-24) C-Media reserves the right to change specifications without notice. C-MEDIA Electronics Inc. 6F, 100, Sec. 4, Civil Boulevard, Taipei, Taiwan, R.O.C. 106 TEL: 886-2-8773-1100 FAX: 886-2-8773-2211 E-mail:cmedia@ms4.hinet.net Revision Date1/2001