Best Single Chip USB Audio Controller for PC Entertainment CM102-A/102S USB 2CH Audio Controller Data Sheet Version 1.5 VP Project Leader Product Manager Engineer Test Engineer Eric Cheng Lawrence Ding Deko Tsai William Liu Yi-Sung Lin C-MEDIA ELECTRONICS INC. TEL: 886-2-8773-1100 FAX: 886-2-8773-2211 6F, 100, Sec. 4, Civil Boulevard, Taipei, Taiwan 106, R.O.C. For detailed product information, please contact [email protected] CM102-A/102S Integrated 2 Channel USB Audio Controller NOTICES THIS DOCUMENT IS PROVIDED “AS IS” WITH NO WARRANTIES WHATSOEVER, INCLUDING ANY WARRANTY OF MERCHANTABILITY, NONINFRINGEMENT, FITNESS FOR ANY PARTICULAR PURPOSE, OR ANY WARRANTY OTHERWISE ARISING OUT OF ANY PROPOSAL, DOCUMENT OR SAMPLE. ALL RIGHTS RESERVED. NO PART OF THIS DOCUMENT MAY BE REPRODUCED OR TRANSMITTED IN ANY FORM OR BY ANY MEANS, ELECTRONIC OR MECHANICAL, INCLUDING INFORMATION STORAGE AND RETRIEVAL SYSTEMS, WITHOUT PERMISSION IN WRITING FROM THE C-MEDIA ELECTRONICS, INC. Third-party brands and names are the property of their respective owners. Copyright 2002-2003 © C-Media Electronics Inc. *C-Media reserves the right to modify the specifications without further notice* Date: 10/17/2003 Version: -1- 1.5 CM102-A/102S Integrated 2 Channel USB Audio Controller 1.DESCRIPTION AND OVERVIEW CM102 series is a highly integrated single chip for USB speaker application. Minimum external components are needed for building an USB speaker system, which makes CM102-A/S a simple and very cost-effective solution. Since no driver is necessary for audio playback on all major OS; CM102-A/S provides a truly plug-and-play feature for external digital audio playback. For energy saving, USB suspend mode and resume is supported by CM102-A/S. With power amplifier enable pin and volume control VR input pin, a traditional speaker front panel design can be built. More flexible and customized design is possible with GPIO pin, which is accessible by USB vendor specific request. Features z USB 2.0 Full Speed Compatible z USB audio device class specification v1.0 Compatible z USB bus powered 500mA operation with suspend mode support z Single 12MHz crystal input with on-chip PLL and embedded USB transceiver z USB audio function topology has 1 input terminal, 1 output terminal, and 1 feature unit z Alternate zero bandwidth setting for releasing bandwidth on USB bus during inactive operation z Isochronous transfer using adaptive synchronization with internal PLL z High performance 48KHz sampling rate for audio playback z Embedded high performance 16 bit audio DAC z Embedded class AB power amplifier for speaker driving z Embedded power on reset block and Power amplifier enable / disable control pin z Volume control input with simple external VR circuit z GPIO pin for application specific usage z S/PDIF output interface z Single 5V external power supply with internal power regulation z 3.3V IO with 5V tolerance; 3.3V core logics design z Compatible with Win 98SE / Win ME / Win 2000 / Win XP, and Mac OS 9 / OS X without additional driver z Compact 18 pin SOP package z Target application: multimedia USB audio box, decoder integrated, pen driver z Software Xear 3D Sound Technology With HRTF 3D, EAXTM, Speaker Shifter and Virtual 5.1CH effects Date: 10/17/2003 Version: -2- 1.5 CM102-A/102S Integrated 2 Channel USB Audio Controller PIN DESCRIPTIONS CM102-A/102S PIN # 1 2 3 4 5 6 7 8 9 Signal Name PAEN GPIO XO XI DVDD1 DVDD2 USBDP USBDM DVSS PIN # 10 11 12 13 14 15 16 17 18 Signal Name TEST VREF VOLADJ AVDD LOL LOR AVSS SPDIF Out PDSW Figure 1. Pin Assignments (Top View) Date: 10/17/2003 Version: -3- 1.5 CM102-A/102S Integrated 2 Channel USB Audio Controller Pin # Symbol z Type Description Power amplifier enable; 1 PAEN DI, PD 2 GPIO DIO, PD 3 XO AO Clock output pin for 12MHz oscillator 4 XI AI Clock input pin for 12MHz oscillator 5 DVDD1 P 5V digital power H – normal mode, L – power down power amplifier GPIO pin, default is input mode after reset; accessible by USB vendor specific request 3.3V voltage from internal regulator for decouple capacitor connection 6 DVDD2 P 7 USBDP AIO USB data D+ 8 USBDM AIO USB data D- 9 DVSS P 10 TEST DI, PD 11 VREF AO Connect to external decouple capacitor for embedded bandgap 12 VOLADJ AI 0 ~ 2.25V input for volume adjustment by external VR; pull high to disable VR volume adjustment function 13 AVDD P 5V analog power 14 LOL AO Line out left channel 15 LOR AO Line out right channel 16 AVSS P 17 SPDIF Out DO 18 PDSW DO, 4mA It is not affected by power down mode and can be used to connect USB pull up resistor. 5V digital ground Test mode select pin; pull low in normal mode operation 5V analog ground SPDIF Out Power down switch control 1: normal mode, 0: power down mode Note: DI – digital input pin , DO – digital output pin, DIO – digital bi-directional pin, P – power pin, PD – pull down with 100K Ohm resistor, AI – analog input, AO – analog output Date: 10/17/2003 Version: -4- 1.5 CM102-A/102S Integrated 2 Channel USB Audio Controller Block Diagram of CM102-A/102S PAEN TEST PDSW GPIO DVDD2 control block power on reset 5V to 3.3V regulator SRAM USB protocol processing USB TRX USB IF +21 ~ -33 dB ISO out processing PLL1 48 MHz PLL2 line out power amp 16 bit DAC 12.288 MHz 6 bit ADC bandgap VREF VR input Figure 2：Block Diagram Of CM102-A/102S Vendor Specific Request for GPIO Access GPIO write Offset 0 1 Field bmRequestType bRequest Size 1 1 Value 43 01 2 wValue 2 Value 4 6 wIndex wLength 2 2 0000 0000 Offset 0 1 Field bmRequestType bRequest Size 1 1 Value C3 81 2 wValue 2 Value 4 6 wIndex wLength 2 2 0000 0001 Description Bit 0: GPIO value Bit 1: 1: output; 0: input GPIO read Date: 10/17/2003 Description Bit 0: GPIO value Bit 1: 1: output; 0: input Version: -5- 1.5 CM102-A/102S Integrated 2 Channel USB Audio Controller 2. ORDERING INFORMATION Model Number Package CM102-A/102S 18-Pin PDIP 18-Pin SOP Outline of Dimensions Operating Ambient Temperature 0 o C to +70 o C 0 o C to +70 o C Supply Range DVdd = 4.5V, AVdd = 5.5V DVdd = 4.5V, AVdd = 5.5V Dimensions shown in inches and (mm) 18- Plastic dual-in-line packaging (PDIP) Figure 3：Mechanical Dimension of CM102-A 18- Pin SOP Figure 4：Mechanical Dimension of CM102S Date: 10/17/2003 Version: -6- 1.5 CM102-A/102S Integrated 2 Channel USB Audio Controller TABLE OF CONTENTS 1. DESCRIPTION AND OVERVIEW 2 2. ORDERING INFORMATION 6 3. PIN/SIGNAL DESCRIPTIONS 9 3.1 CLOCK PIN 9 3.2 ANALOG I/O 9 3.3 POWER / GROUND 9 3.4 CONFIGURATION / GPIO 10 4. VR MAPPING TABLE 11 5. VENDOR SPECIFIC REQUEST FOR GPIO ACCESS 12 6. USB DESCRIPTORS 13 6.1 DEVICE DESCRIPTORS 13 6.2 CONFIGURATION DESCRIPTOR 13 6.3 USB AUDIO TOPOLOGY DIAGRAM 14 7. ELECTRICAL CHARACTERISTICS 15 7.1 ABSOLUTE MAXIMUM RATING 15 7.2 OPERATION CONDITIONS 15 7.3 ELECTRICAL PARAMETERS 15 7.4 AUDIO PERFORMANCE 16 8. FREQUENCY RESPONSE GRAPHS 17 8.1 AUDIO PERFORMANCE 17 8.2 LINE OUTPUT SERIES CAPACITORS: 1000ΜF 17 9. APPLICATION CIRCUIT REFERENCE Date: 10/17/2003 18 Version: -7- 1.5 CM102-A/102S Integrated 2 Channel USB Audio Controller 10. LIST OF FIGURES Figure 1：Pin Assignments (Top View) Figure 2：Block Diagram Of CM102-A/102S Figure 3：Mechanical Dimension of CM102-A Figure 4：Mechanical Dimension of CM102S Figure 5：Topology Diagram Figure 6：Frequency Response of CM102-A/S with 220μF Series Capacitor Figure 7：Frequency Response of CM102-A/S with 1000μF Series Capacitor Figure 8：Application Circuit of CM102 Rev 1.6 Date: 10/17/2003 3 5 6 6 14 17 17 18 Version: -8- 1.5 CM102-A/102S Integrated 2 Channel USB Audio Controller 3. PIN/SIGNAL DESCRIPTIONS 3.1 Clock Pin These signals connect CM102-A/CM102S to external clock source signal. Signal Name XO XI Type O I Pin No 3 4 Description Clock output pin for 12MHz oscillator. Clock input pin for 12MHz oscillator. 3.2 Analog I/O These signals connect CM102-A/CM102S to analog signals, external VR, and decouple capacitor. Signal Name Type Pin No VREF O 11 VOLADJ I 12 LOL LOR USBDP USBDM O O I/O I/O 14 15 7 8 Description Connect to external decouple capacitor for embedded bandgap. 0 ~ 2.25V input for volume adjustment by external VR; pull high to disable VR volume adjustment function. Line out left channel. Line out right channel. USB data D+. USB data D-. 3.3 Power / Ground Analog VDD is 5V, Digital VDD is 3.3V and 5V. Analog ground plane and digital ground plane should be separated well. Signal Name DVDD1 Type I Pin No 5 DVDD2 O 6 DVSS AVDD AVSS I I I 9 13 16 Description 5V digital power. 3.3V voltage from internal regulator for decouple capacitor connection. It is not affected by power down mode and can be used to connect USB pull up resistor. Digital ground. 5V analog power. 5V analog ground. Date: 10/17/2003 Version: -9- 1.5 CM102-A/102S Integrated 2 Channel USB Audio Controller 3.4 Configuration / GPIO These signals are for various configuration and GPIO. Signal Name Type Pin No PAEN I 1 GPIO I/O 2 TEST I 10 SPDIF Out O 17 PDSW O 18 Description Power amplifier enable; H – Normal mode, L – Power down power amplifier. GPIO pin, default is input mode after reset; accessible by USB vendor specific request. Test mode select pin; pull low in normal mode operation. This pin is used for SPDIF Out. Power down switch control. H - Normal mode, L - Power down mode. PAEN / GPIO / TEST: Internal pull down via 100KΩ resistor. Date: 10/17/2003 Version: - 10 - 1.5 CM102-A/102S Integrated 2 Channel USB Audio Controller 4. VR MAPPING TABLE VOLADJ (pin 12) can be pulled high to disable external VR volume adjustment function. Voltage level set by external VR can change the CM102-A/CM102S volume control value according to the following table. Input DC voltage relative to 2.25V >= 96.5 % 95 ~ 96.5 % 93.5 ~ 95 % 92 ~ 93.5 % 90.5 ~ 92 % 89 ~ 90.5 % 87.5 ~ 89 % 86 ~ 87.5 % 84.5 ~ 86 % 83 ~ 84.5 % 81.5 ~ 83 % 80 ~ 81.5 % 78.5 ~ 80 % 77 ~ 78.5 % 75.5 ~ 77 % 74 ~ 75.5 % 72.5 ~ 74 % 71 ~ 72.5 % 69.5 ~ 71 % 68 ~ 69.5 % 66.5 ~ 68 % 65 ~ 66.5 % 63.5 ~ 65 % 62 ~ 63.5 % 60.5 ~ 62 % 59 ~ 60.5 % 57.5 ~ 59 % 56 ~ 57.5 % 54.5 ~ 56 % 53 ~ 54.5 % 51.5 ~ 53 % 50 ~ 51.5 % Adjust value added to volume control (unit : DAC step) -37 (MUTE) -30 -29 -28 -27 -26 -25 -24 -23 -22 -21 -20 -19 -18 -17 -16 -15 -14 -13 -12 -11 -10 -9 -8 -7 -6 -5 -4 -3 -2 -1 0 Input DC voltage relative to 2.25V 48.5 ~ 50 % 47 ~ 48.5 % 45.5 ~ 47 % 44 ~ 45.5 % 42.5 ~ 44 % 41 ~ 42.5 % 39.5 ~ 41 % 38 ~ 39.5 % 36.5 ~ 38 % 35 ~ 36.5 % 33.5 ~ 35 % 32 ~ 33.5 % 30.5 ~ 32 % 29 ~ 30.5 % 27.5 ~ 29 % 26 ~ 27.5 % 24.5 ~ 26 % 23 ~ 24.5 % 21.5 ~ 23 % 20 ~ 21.5 % 18.5 ~ 20 % 17 ~ 18.5 % 15.5 ~ 17 % 14 ~ 15.5 % 12.5 ~ 14 % 11 ~ 12.5 % 9.5 ~ 11 % 8 ~ 9.5 % 6.5 ~ 8 % 5 ~ 6.5 % 3.5 ~ 5 % <=3.5 % Date: 10/17/2003 Adjust value added to volume control (unit : DAC step) 0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +10 +11 +12 +13 +14 +15 +16 +17 +18 +19 +20 +21 +22 +23 +24 +25 +26 +27 +28 +29 +30 +37 Version: - 11 - 1.5 CM102-A/102S Integrated 2 Channel USB Audio Controller 5. VENDOR SPECIFIC REQUEST FOR GPIO ACCESS GPIO Write Offset Field Size 0 bmRequestType 1 Value (Hex) 43 1 bRequest 1 01 2 wValue 2 Value 4 wIndex 2 0000 6 wLength 2 0000 Offset Field Size 0 bmRequestType 1 Value (Hex) C3 1 bRequest 1 81 2 wValue 2 Value 4 wIndex 2 0000 6 wLength 2 0001 Description Bit 0: GPIO value Bit 1: 1: output; 0: input GPIO Read Date: 10/17/2003 Description Bit 0: GPIO value Bit 1: 1: output; 0: input Version: - 12 - 1.5 CM102-A/102S Integrated 2 Channel USB Audio Controller 6. USB DESCRIPTORS The audio and control data are transferred to CM102-A/CM102S via USBDP (Pin 7) and USBDM (Pin8) in full-speed, which correspond to D+ and D- in the USB specification. The descriptors are listed for design reference. 6.1 Device Descriptors Offset Field Size Value (Hex) 0 bLength 1 12 Total 18 Bytes. 1 bDescriptorType 1 01 Device Descriptor. 2 bcdUSB 2 0110 4 bDeviceClass 1 00 5 bDeviceSubClass 1 00 6 bDeviceProtocol 1 00 7 bMaxPacketSize0 1 08 8 idVendor 2 0D8C Vendor ID. 10 idProduct 2 0001 Product ID. 12 bcdDevice 2 0010 14 iManufacturer 1 01 Index of string descriptor describing manufacturer. 15 iProduct 1 02 Index of string descriptor describing product. Description USB Specification comptible. Endpoint zero Size = 8 bytes. 16 iSerialNumber 1 00 Index of string descriptor describing the device’s serial number. 17 bNumConfiguratio ns 1 01 Configurations number = 1. 6.2 Configuration Descriptor The following information is described in the configuration descriptor. Date: 10/17/2003 Version: - 13 - 1.5 CM102-A/102S Integrated 2 Channel USB Audio Controller Offset Field Size 0 bLength 1 1 bDescriptorType 1 wTotalLength 2 bNumInterfaces 4 bConfigurationValu 5 e Value Description (Hex) 09 Total 9 Bytes. 02 Configuration Descriptor. 006e Total length of data returned for this configuration: 110 Bytes. 1 02 Number of interfaces supported by this Configuration: 0: control interface. 1: ISO-OUT interface. 1 01 2 6 iConfiguration 1 00 7 bmAttributes 1 80 bus Power and non support Remote Wakeup. FA Maximum power consumption of the USB Device: 500mA. bMaxPower 8 2 6.3 USB audio topology diagram IT feature unit OT speaker USB Figure 5：Topology Diagram Date: 10/17/2003 Version: - 14 - 1.5 CM102-A/102S Integrated 2 Channel USB Audio Controller 7. ELECTRICAL CHARACTERISTICS 7.1 Absolute maximum rating Symbol Parameter Value Unit Dvmin Dvmax Avmin Avmax Min digital supply voltage Max digital supply voltage Min analog supply voltage Max analog supply voltage Voltage on any digital input or output pin Voltage on any analog input or output pin Storage temperature range ESD human body mode ESD machine mode – 0.3 +6 – 0.3 +6 V V V V –0.3 to +5.5 V –0.3 to +5.5 V -40 to +125 3500 200 ℃ V V Dvinout Avinout Tstg ESD (HBM) ESD (MM) 7.2 Operation conditions Parameter Min Typ Max Unit Analog supply voltage Digital supply voltage Total power consumption Operating ambient temperature 4.5 4.5 0 5.0 5.0 - 5.5 5.5 50 70 V V mA ℃ Min Typ Max Unit 2.25 bit V 12.006 - MHz MHz MHz +6 - dB Steps 7.3 Electrical Parameters Parameter Resolution Input range Clock input frequency PLL1 output frequency PLL2 output frequency Volume control level Volume control step(1) VR Input 5 0 Clock 11.994 12 48 12.288 Amplification -33 37 Note: 1) with an additional mute step Date: 10/17/2003 Version: - 15 - 1.5 CM102-A/102S Integrated 2 Channel USB Audio Controller 7.4 Audio Performance Parameter Min Typ Max Unit - 16 - bits THD + N (-3dBr) -66 - - dB SNR 82.1 - - dB Silent SNR 90.5 - - dB Dynamic range 82.7 - - dB 20 - 20K Hz Output voltage (rms) - 1.1 - Vrms Output voltage swing 0.7 - 3.8 V 4.5 5.0 5.5 V -53.5 - - dB 82 - - dB Silent SNR 103 - - dB Dynamic range 83.4 - - dB Output voltage (rms) - 1.34 - Vrms Output voltage swing - - 4.50 Vpp V 0.308 - 0.427 W 0.291 - 0.368 W 0.248 - 0.316 W DAC Resolution Frequency response Power amplifier Power supply THD + N (-3dBr) SNR Maximum output power per channel (RMS value, 4 ohm load) Maximum output power per channel (RMS value, 6 ohm load) Maximum output power per channel (RMS value, 8 ohm load) Date: 10/17/2003 Version: - 16 - 1.5 CM102-A/102S Integrated 2 Channel USB Audio Controller 8. FREQUENCY RESPONSE GRAPHS 8.1 Line Output Series Capacitors : 220µF C -m edia D igital P layback (P C -D -A ) for Line O utput Frequency R esponse 01/29/01 18:06:34 +1 +0 -1 d B r -2 -3 A -4 -5 -6 30 50 100 200 500 1k 2k 5k 10k Hz C o lo r L ine Style Th ick D a ta Axis C yan Ye llo w Solid Solid 3 3 Fa s tte s t.C h .1 Am pl!N o rm alize Fa s tte s t.C h .2 Am pl!N o rm alize L eft L eft WL-Mu ltitone -4 8k.at2 Figure 6：Frequency Response of CM102-A/S with 220µF Series Capacitor 8.2 Line Output Series Capacitors : 1000µF C -Media D igital Playback (PC-D -A) for Line O utput Frequency R esponse 01/29/01 18:16:17 30 5k +1 +0 d B r -1 -2 -3 A -4 -5 -6 50 100 200 500 1k 2k 10k Hz C olor Line Style Thick D ata Axis C yan Yellow Solid Solid 3 3 Fas ttes t.C h.1 Am pl!N orm alize Fas ttes t.C h.2 Am pl!N orm alize Left Left WL-Multitone-48k.at2 Figure 7：Frequency Response of CM102-A/S with 1000µF Series Capacitor Date: 10/17/2003 Version: - 17 - 1.5 CM102-A/102S Integrated 2 Channel USB Audio Controller 9. APPLICATION CIRCUIT REFERENCE Figure 8：Application Circuit of CM102-A/S Rev 1.6 Date: 10/17/2003 Version: - 18 - 1.5 CM102-A/102S Integrated 2 Channel USB Audio Controller 10. REFERENCE USB-IF, USB Specification, Revision 1.1 and 2.0, and USB Audio Device Class Specification, Revision 1.0,. －End of Specifications－ C-MEDIA ELECTRONICS INC. 6F., 100, Sec. 4, Civil Boulevard, Taipei, Taiwan 106 R.O.C. TEL:886-2-8773-1100 FAX:886-2-8773-2211 E-mail：[email protected] URL：http://www.cmedia.com.tw Date: 10/17/2003 Version: - 19 - 1.5