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EKA8561A
USB Audio Controller
Product Specification
DOC. VERSION 0.1
ELAN MICROELECTRONICS CORP.
April 2006
Trademark Acknowledgments: IBM is a registered trademark and PS/2 is a trademark of IBM. Windows is a trademark of Microsoft Corporation. ELAN and ELAN logo are trademarks of ELAN Microelectronics Corporation.
Copyright (c) 2006 by ELAN Microelectronics Corporation
All Rights Reserved
Printed in Taiwan
The contents of this specification are subject to change without further notice. ELAN Microelectronics assumes no responsibility concerning the accuracy, adequacy, or completeness of this specification. ELAN Microelectronics makes no commitment to update, or to keep current the information and material contained in this specification. Such information and material may change to conform to each confirmed order. In no event shall ELAN Microelectronics be made responsible for any claims attributed to errors, omissions, or other inaccuracies in the information or material contained in this specification. ELAN Microelectronics shall not be liable for direct, indirect, special incidental, or consequential damages arising from the use of such information or material. The software (if any) described in this specification is furnished under a license or nondisclosure agreement, and may be used or copied only in accordance with the terms of such agreement. ELAN Microelectronics products are not intended for use in life support appliances, devices, or systems. Use of ELAN Microelectronics product in such applications is not supported and is prohibited. NO PART OF THIS SPECIFICATION MAY BE REPRODUCED OR TRANSMITTED IN ANY FORM OR BY ANY MEANS WITHOUT THE EXPRESSED WRITTEN PERMISSION OF ELAN MICROELECTRONICS.
ELAN MICROELECTRONICS CORPORATION
Headquarters: No. 12, Innovation Road 1 Hsinchu Science Park Hsinchu, TAIWAN 30077 Tel: +886 3 563-9977 Fax: +886 3 563-9966 http://www.emc.com.tw Hong Kong: Elan (HK) Microelectronics Corporation, Ltd. Rm. 1005B, 10/F Empire Centre 68 Mody Road, Tsimshatsui Kowloon , HONG KONG Tel: +852 2723-3376 Fax: +852 2723-7780 elanhk@emc.com.hk Shenzhen: Elan Microelectronics Shenzhen, Ltd. SSMEC Bldg., 3F, Gaoxin S. Ave. Shenzhen Hi-Tech Industrial Park Shenzhen, Guandong, CHINA Tel: +86 755 2601-0565 Fax: +86 755 2601-0500 USA: Elan Information Technology Group (U.S.A.) 1821 Saratoga Ave., Suite 250 Saratoga, CA 95070 USA Tel: +1 408 366-8225 Fax: +1 408 366-8220
Europe: Elan Microelectronics Corp. (Europe) Siewerdtstrasse 105 8050 Zurich, SWITZERLAND Tel: +41 43 299-4060 Fax: +41 43 299-4079 http://www.elan-europe.com
Shanghai: Elan Microelectronics Shanghai, Ltd. 23/Bldg. #115 Lane 572, Bibo Road Zhangjiang Hi-Tech Park Shanghai, CHINA Tel: +86 21 5080-3866 Fax: +86 21 5080-4600
Contents
Contents
1 2 3 4 5 6 7 8 General Description .................................................................................................. 1 Features ..................................................................................................................... 1 Applications............................................................................................................... 2 Pin Configuration ...................................................................................................... 2 Pin Description.......................................................................................................... 3 Function Description ................................................................................................ 5 Absolute Maximum Rating ....................................................................................... 5 Electrical Characteristic ........................................................................................... 6 8.1 8.2 9 10 11 DC Electrical Characteristic................................................................................ 6 Analog Electrical Characteristic.......................................................................... 7
Application Circuit .................................................................................................... 8 I S Interface Signal.................................................................................................... 9 Package.................................................................................................................... 10
2
Product Specification (V0.1) 04.21.2006
* iii
Contents
Specification Revision History
Doc. Version 0.1 Revision Description Initial Preliminary Version Date 2006/04/21
iv *
Product Specification (V0.1) 04.21.2006
EKA8561A
USB Audio Controller
1
General Description
The EKA8561A is a USB digital audio controller with audio data processing that supports 16-bit 2-channel format at 48 kHz sampling rate. The device has an 2 integrated USB transceiver, USB core, DAC, ADC, and I S Input/Output. It can handle a high-level USB protocol, and manages user interface via HID I/O pins.
2
Features
USB Specification v1.1 Compliant USB Audio and Human Interface Device (HID) Class v1.1 Compliant Supports 12 Mbits/s Full Speed Serial Data Transmission Supports 48K, 44.1kHz, 32kHz, 8kHz sampling rate Single oscillator: 6MHz Audio buffer size: 192x16 bits x 2 Total of four Endpoints: Endpoint 0 for control transfer , Endpoint 1 for audio streaming out , Endpoint 2 for streaming in , Endpoint 3 for HID Supports stereo/mono playback Built-in 2-channel D/A Converter with 10-bit resolution Built-in 1-channel A/D converter with 10-bit resolution Alternative settings supported by the audio streaming-out interface: ALT-0: (default setting) zero isochronous bandwidth ALT-1: 16-bit PCM 2 channel Alternative settings supported by the audio streaming-in interface: ALT-0: (default setting) zero isochronous bandwidth ALT-1: 16-bit PCM stereo 2 LED direct sink pins with internal serial resistor RC Oscillator with internal RC Total of 3 HID control pins (Mute Speaker, Volume Down, Volume Up) Wake-up pin in HID control pin Package: 48-pin LQFP
Product Specification (V0.1) 04.21.2006
(This specification is subject to change without further notice)
*1
EKA8561A
USB Audio Controller
3
Applications
USB Speaker USB Microphone USB Telephone
4
Pin Configuration
48 47 46 45 44 43 42 41 40 39 38 37 1 2 3 4 5 6 7 8 9 10 11 12 NC NC NC NC DGND DM DP VBUS CMP1_IN CMP2_IN VPHY AGND
Fig 4-1 48-Pin Configuration of EKA8561A LQFP Type
2*
13 14 15 16 17 18 19 20 21 22 23 24
NC NC NC NC VolDn VolUp Mute RECORD_SEL OSCO OSCI Test PLLC
FS_SEL0 FS_SEL1 MCLKE MCLK BCLK LRCLK SDATA I_MCLK I_BCLK I_LRCLK I_SDATA LED
F_LOUT VDA1 VDA2 F_ROUT NC AGND2 ALC AMPO OPNF MIC_IN VAD VD
36 35 34 33 32 31 30 29 28 27 26 25
Product Specification (V0.1) 04.21.2006
(This specification is subject to change without further notice)
EKA8561A
USB Audio Controller
5
Pin Description
Symbol Pin No. I/O I S Sample Frequency. Sample Frequency MCLK 8.192MHz 2.048MHz 11.2896MHz 12.288MHz
2
Function
FS_SEL0 FS_SEL1
00 1, 2 I 01 10 11
32kHz 8kHz 44.1kHz 48kHz
Pull-high resistors are connected to VD. External MCLK enable pin. MCLKE 3 I 0 : use external MCLK and MCLK pin is input pin 1 : use internal MCLK and MCLK pin is output pin A pull-high resistor is connected to VD. MCLK BCLK LRCLK SDATA I_MCLK I_BCLK I_LRCLK I_SDATA P57 (PlayLED) 4 5 6 7 8 9 10 11 12 I O O O I I I I O Crystal oscillator I/O pin BCLK for I S interface LRCLK for I S interface I S interface for FL, FR output MCLK input pin BCLK for I S interface LRCLK for I S interface I S interface for FL, FR input LED output pin Play/Pause: flash LED Stop: LED On LED output pin P56(PowerLED) 13 O Suspend: LED off Power On: LED On LED output pin P55 (RecordLED) P54, P53 (NC) P52 (VolDn) P51 (VolUp) P50 (Mute) 14 15-16 17 18 19 I I I Volume down control pin Volume up control pin Mute control pin Record select pin RECORD_SEL 20 I 0 : ADC record 1 : I S record A pull-low resistor is connected to DGND
2 2 2 2 2 2 2
O
Record: LED On Non-record: LED Off
Product Specification (V0.1) 04.21.2006
(This specification is subject to change without further notice)
*3
EKA8561A
USB Audio Controller
Symbol OSCO OSCI
Pin No. 21 22
I/O O I Crystal output Crystal input Test mode select pin Test =0, enter normal mode Test=1, enter test mode
Function
Test
23
I
A pull-low resistor is connected to DGND. PLLC VD VAD MIC_IN OPNF AMPO ALC AGND2 NC F_ROUT VDA2 VDA1 F_LOUT AGND VPHY CMP2_IN CMP1_IN VBUS DP DM DGND NC 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45-48 I PWR PWR I I O I O PWR PWR O PWR PWR I I PWR I/O I/O PWR External capacitor for PLL 5V digital power supply pin ADC analog power supply pin Microphone analog input pin Non-inverting type amplifier. Normally, a feedback resistor connects from AMPO to OPNF and a gain resistor connects to MIC. Gain amplifier output and negative feedback terminal for MIC Automatic Level Control adjustment pin for MIC Analog Ground Pin 2 No connection Front right channel analog audio output pin DAC analog power supply Pin 2 DAC analog power supply Pin 1 Front left channel analog audio output pin Analog ground pin Phy and PLL power supply pin Comparator 2 Input (FR) Comparator 1 Input (MIC) USB bus power supply pin USB plus data line interface USB minus data line interface Digital ground pin No connection
4*
Product Specification (V0.1) 04.21.2006
(This specification is subject to change without further notice)
EKA8561A
USB Audio Controller
6
Function Description
The EKA8561A is a USB Audio Controller that transmits/receives audio data stream to/from the host through its Audio Streaming interface. The Audio Data Format supports 16-bit, 2-channel, and 48kHz PCM. It has three interfaces. Interface 1 supports three sampling frequencies. The sampling rate is changed when "Set Endpoint Control Request" is issued. If user plays other format audio data, the application software transforms it to 48kHz data and then transmit to this device. For Interface 2, this device transmits data at a rate that is locked to frame timing. When user use the recording format (ex. 8kHz) to record speech other than 48kHz stereo format, the application software transforms 48kHz data to 8kHz data. Interface 3 is HID pipe which is used to read button status. The volume and mute control can be activated via host (audio device class requests) or via I/O pins (HID plus audio device class requests). When this function is activated via host, the host manages the audio PCM data directly. The EKA8561A device just playback the audio data. Otherwise, when it is activated via I/O pins, the EKA8561A sends the controlled feature (Volume, Mute) message through HID pipe and signals the host to manage the audio PCM data directly.
7
Absolute Maximum Rating
Symbol Temperature under bias Storage temperature Input voltage Output voltage Min 0 -65 -0.5 -0.5 Max 70 150 6.0 6.0 Unit C C V V
Product Specification (V0.1) 04.21.2006
(This specification is subject to change without further notice)
*5
EKA8561A
USB Audio Controller
8
Electrical Characteristic
8.1 DC Electrical Characteristic
Ta=0C~70C, VBus=5V, DGND=0V
Symbol IL VIH VIL VIHX VILX VOH VOL1 VOL2 IPH IPL ISB1 ISB2 ICC
2
Parameter Input Leakage Current Input High Voltage Input Low Voltage Clock Input High Voltage Clock Input Low Voltage Output High Voltage 2 (I S Interface Pin) Output Low Voltage 2 (I S Interface Pin) Output Low Voltage (LED driver ) Pull-high Current (Input and Sel_Vref pin) Pull-low Current (Test pin) Power Down Current Power Down Current Operating Supply Current OSCI OSCI
Condition VIN = VBus, DGND -
Min 2.0 2.5 2.4 -10% -20% -20% -
Typ 1.3 -125 125 -
Max 1 0.8 1.0 0.4 +10% +20% +20% 50 100 10
Unit A V V V V V V V A A A A mA
IOH = -10.0mA IOL = 10.0mA IOL = 10.0mA VBus = 5V Pull-high active, input pin at DGND (PH resistor = 25 K) Test pin at VBus (PL resistor = 25 K) All input and I/O pin at VBus, Output pin floating, WDT disabled All input and I/O pin at VBus, Output pin floating, WDT enabled Fosc= 6.0 MHz , output pin floating
6*
Product Specification (V0.1) 04.21.2006
(This specification is subject to change without further notice)
EKA8561A
USB Audio Controller
8.2 Analog Electrical Characteristic
Parameter ADC ADC Resolution ADC Sampling Frequency Internal High Reference Voltage for ADC Internal Low Reference Voltage for ADC Pre-Amplifier Spec. Pre-Amplifier Voltage Gain Gain Amplifier Spec. Voltage Amplifier Gain Output Voltage Swing Output Voltage ALC Circuit Spec. ALC Detection Level ALC Operating Range LPF Spec Pass-Band Ripple Pass-Band Cutoff Frequency Stop-Band Attenuation @ 24kHz Stop-Band Attenuation @ 48kHz DAC DAC Resolution DAC Sampling Frequency Reference Voltage (Vref) Minimum Analog Output Voltage Maximum Analog Output Voltage Full Scale Voltage Range Analog Output Impedance at Each Output Pin Analog Output Capacitance at Each Output Pin External Load Impedance Volume Control Step VDA=3.3V 1.45 0.99 2.15 -5% 10 48 1.65 1.04 2.26 1.2 32 16 1.85 1.09 2.37 +5% 200 20 Bits kHz V V V V pF Step 70 90 4 0.5 dB kHz dB dB MIC input = 7.5mV -40 36 40 44 dBm dB 49 0.85 50 1.6 2.45 51 dB Vp-p V 19.5 20 20.5 dB 10 48 2.55 0.75 Bits kHz V V Condition Min Typ Max Unit
Product Specification (V0.1) 04.21.2006
(This specification is subject to change without further notice)
*7
EKA8561A
USB Audio Controller
9
Application Circuit
Fig 9-1 EKA8561A 48-pin, Audio Circuit 8* Product Specification (V0.1) 04.21.2006
(This specification is subject to change without further notice)
EKA8561A
USB Audio Controller
10 I S Interface Signal
LRCLK
0
2
Left Channel
31 0
Right Channel
31
BCLK
SDA TA
MSB -1
-2
-3
+3 +2 +1 LSB
MSB -1
-2
-3
+3 +2 +1 LSB
Fig 10-1 I 2S Justified Audio Stream Format
LRCLK
0
Left Channel
31 0
Right Channel
31
BCLK
SDA TA
MSB -1
-2
-3
+3 +2 +1 LSB
MSB -1
-2
-3
+3 +2 +1 LSB
Fig 10-2 Left Justified Audio Stream Format
LRCLK
0
Left Channel
31 0
Right Channel
31
BCLK
SDA TA
MSB -1
-2
-3
+3 +2 +1 LSB
MSB -1
-2
-3
+3 +2 +1 LSB
Fig 10-3 Right Justified Audio Stream Format
The LRCLK and BCLK are derived from MCLK. The frequency ratio is MCLK: LRCLK: BCLK = 256: 1: 64 The frequency of LRCLK equals the sampling rate of 48kHz, 44.1kHz, 32kHz or 8kHz based on FS_SEL0 and FS_SEL1 pins status.
Product Specification (V0.1) 04.21.2006
(This specification is subject to change without further notice)
*9
EKA8561A
USB Audio Controller
11 Package
10 *
Product Specification (V0.1) 04.21.2006
(This specification is subject to change without further notice)

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