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DATA SHEET

Preliminary speciﬁcation

File under Integrated Circuits, IC01

1999 May 10

INTEGRATED CIRCUITS

UDA1325

Universal Serial Bus (USB) CODEC

Summary of content (52 pages)

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INTEGRATED CIRCUITS DATA SHEET UDA1325 Universal Serial Bus (USB) CODEC Preliminary specification File under Integrated Circuits, IC01 1999 May 10
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Philips Semiconductors Preliminary specification Universal Serial Bus (USB) CODEC UDA1325 FEATURES Audio recording channel General • One isochronous input endpoint • High Quality USB-compliant Audio/HID device • Supports multiple audio data formats (8, 16 and 24 bits) • Supports 12 Mbits/s serial data transmission • Twelve selectable sample rates (4, 8, 16 or 32 kHz; 5.5125, 11.025, 22.05 or 44.1 kHz; 6, 12, 24 or 48 kHz) via analog PLL (APLL).
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Philips Semiconductors Preliminary specification Universal Serial Bus (USB) CODEC UDA1325 All I2S inputs and I2S outputs support standard I2S-bus format and the LSB justified serial data format with word lengths of 16, 18 and 20 bits. APPLICATIONS • USB monitors • USB speakers Via the digital I/O module with its I2S input and output, an external DSP can be used for adding extra sound processing features for the audio playback channel.
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Philips Semiconductors Preliminary specification Universal Serial Bus (USB) CODEC UDA1325 QUICK REFERENCE DATA SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT Supplies VDDE supply voltage periphery 4.75 5.0 5.25 V VDDI supply voltage core 3.0 3.3 3.6 V IDD(tot) total supply current − 60 tbf mA IDD(tot)(ps) total supply current in power-saving note 1 mode − 360 − µA − −90 −80 dB − 0.0032 0.01 % − −30 −20 dB − 3.2 10 % 95 − dBA 0.
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Philips Semiconductors Preliminary specification Universal Serial Bus (USB) CODEC UDA1325 BLOCK DIAGRAM handbook, full pagewidth VSSX 24 (19) XTAL1b 25 (20) XTAL2b VDDX 26 (21) VDDA3 52 (39) XTAL2a 53 (40) XTAL1a 54 (41) VSSA3 55 (42) GP2/DO 63 (4) D+ D− P0.7 to P0.0 P2.0 to P2.
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Philips Semiconductors Preliminary specification Universal Serial Bus (USB) CODEC UDA1325 PINNING PIN QFP64 PIN SDIP42 I/O DESCRIPTION GP3/WSO 1 5 I/O general purpose pin 3 or word select output GP4/BCKO 2 6 I/O general purpose pin 4 or bit clock output P0.5 3 − I/O Port 0.5 of the microcontroller SHTCB 4 7 I P0.6 5 − I/O Port 0.6 of the microcontroller D− 6 8 I/O negative data line of the differential data bus, conforms to the USB standard P0.7 7 − I/O Port 0.
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Philips Semiconductors Preliminary specification Universal Serial Bus (USB) CODEC UDA1325 PIN QFP64 PIN SDIP42 I/O VDDA1 38 29 − analog supply voltage 1 VSSA1 39 30 − analog ground 1 Vref(DA) 40 31 O reference voltage output DAC Vref(AD) 41 32 O reference voltage output ADC VDDA2 42 33 − analog supply voltage 2 VINL 43 34 I input signal left channel PGA VSSA2 44 35 − analog ground 2 n.c. 45 − − not connected n.c.
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Philips Semiconductors Preliminary specification 52 VDDA3 53 XTAL2a 54 XTAL1a 55 VSSA3 56 P0.0 57 DA UDA1325 58 P0.1 59 WS 60 P0.2 61 BCK 62 P0.3 64 P0.4 handbook, full pagewidth 63 GP2/DO Universal Serial Bus (USB) CODEC GP3/WSO 1 51 VRP GP4/BCKO 2 50 ALE P0.5 3 49 VRN SHTCB 4 48 EA P0.6 5 47 VINR D− 6 46 n.c. P0.7 7 45 n.c. D+ 8 44 VSSA2 VDDI 9 43 VINL UDA1325H VSSI 10 42 VDDA2 VSSE 11 41 Vref(AD) VDDE 12 40 Vref(DA) GP1/DI 13 39 VSSA1 P2.
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Philips Semiconductors Preliminary specification Universal Serial Bus (USB) CODEC UDA1325 FUNCTIONAL DESCRIPTION The Universal Serial Bus (USB) Data and power is transferred via the USB over a 4-wire cable. The signalling occurs over two wires and point-to-point segments. The signals on each segment are differentially driven into a cable of 90 Ω intrinsic impedance. The differential receiver features input sensitivity of at least 200 mV and sufficient common mode rejection.
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Philips Semiconductors Preliminary specification Universal Serial Bus (USB) CODEC UDA1325 Memory Management Unit (MMU) and integrated RAM The Analog-to-Digital Interface (ADIF) The MMU and integrated RAM handle the temporary data storage of all USB packets that are received or sent over the bus. The ADIF is used for sampling an analog input signal from a microphone or line input and sending the audio samples to the USB interface.
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Philips Semiconductors Preliminary specification Universal Serial Bus (USB) CODEC UDA1325 The clock source of the analog-to-digital interface The clock source of the ADIF is the analog PLL or the ADC oscillator. The preferred clock source can be selected. The ADC clock used for the ADC and decimation filters is obtained by dividing the clock signal coming from the analog PLL or from the ADC oscillator by a factor Q. Using the analog PLL the user can select 3 basic APLL clock frequencies (see Table 1).
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Philips Semiconductors Preliminary specification Universal Serial Bus (USB) CODEC UDA1325 Table 4 The Asynchronous Digital-to-Analog Converter (ADAC) The ADAC receives audio data from the USB processor or from the digital I/O-bus. The ADAC is able to reconstruct the sample clock from the rate at which the audio samples arrive and handles the audio sound processing. After the processing, the audio signal is upsampled, noise-shaped and converted to analog output voltages capable of driving a line output.
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Philips Semiconductors Preliminary specification Universal Serial Bus (USB) CODEC UDA1325 USB ENDPOINT DESCRIPTION The UDA1325 has following six endpoints: • USB control endpoint 0 • USB control endpoint 1 • USB status interrupt endpoint 1 • USB status interrupt endpoint 2 • Isochronous data sink endpoint • Isochronous data source endpoint. Table 5 Endpoint description ENDPOINT NUMBER 0 ENDPOINT INDEX 0 ENDPOINT TYPE control (default) out in 8 control out 8 in 8 1 1 2 MAX.
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Philips Semiconductors Preliminary specification Universal Serial Bus (USB) CODEC Table 6 UDA1325 Selection of data transfer type BIT1 BIT0 DATA TRANSFER TYPE 0 0 audio feature registers (volume left, volume right, bass and treble) 0 1 not used 1 0 control registers 1 1 not used Data bits 7 to 2 represent a 6-bit device address, with bit 7 being the MSB and bit 2 the LSB. The address of the ADAC is 000101 (bits 7 to 2).
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Philips Semiconductors Preliminary specification Universal Serial Bus (USB) CODEC Table 7 UDA1325 ADAC audio feature registers BIT7 BIT6 BIT5 BIT4 BIT3 BIT2 BIT1 BIT0 REGISTER 0 0 VR5 VR4 VR3 VR2 VR1 VR0 volume right 0 1 VL5 VL4 VL3 VL2 VL1 VL0 volume left 1 0 X BB4 BB3 BB2 BB1 BB0 bass 1 1 X TR4 TR3 TR2 TR1 TR0 treble The sequence for controlling the ADAC audio feature registers via the L3-bus is given in the figure below.
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Philips Semiconductors Preliminary specification Universal Serial Bus (USB) CODEC Table 8 UDA1325 ADAC general control registers REGISTER Control register 0 BIT DESCRIPTION VALUE 0 reset ADAC 0 = not reset 1 = reset 1 soft mute control 0 = not muted 1 = mutes 2 synchronous/asynchronous 0 = asynchronous 1 = synchronous 3 channel manipulation 0 = L -> L, R -> R 1 = L -> R, R -> L 4 de-emphasis 0 = de-emphasis off 1 = de-emphasis on 6 and 5 audio mode 7 Control register 1 1 and 0 seri
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Philips Semiconductors Preliminary specification Universal Serial Bus (USB) CODEC UDA1325 Volume control The volume of the UDA1325 can be controlled from 0 dB down to −60 dB (in steps of 1 dB). Below −60 dB the audio signal is muted (−∞ dB). The setting of 0 dB is always referenced to the maximum available volume setting. Independant volume control of the left and right channel is possible (balance control).
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Philips Semiconductors Preliminary specification Universal Serial Bus (USB) CODEC UDA1325 Treble control For the playback channel, treble can be regulated in three audio modes: minimum, flat and maximum mode. In flat mode the audio is not influenced. In minimum and maximum mode, the treble range is from 0 to 6 dB in steps of 2 dB. The programmable treble filter is implemented digitally and has a fixed corner frequency of 3000 Hz for the minimum mode and 1500 Hz for the maximum mode.
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Philips Semiconductors Preliminary specification Universal Serial Bus (USB) CODEC UDA1325 Table 12 Bass boost settings BASS (dB) BB4 BB3 BB2 BB1 BB0 FLAT SET MIN. SET MAX. SET 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 1 0 0 0 0 0 1 0 0 0 1.1 1.7 0 0 1 0 1 0 1.1 1.7 0 0 1 1 0 0 2.4 3.6 0 0 1 1 1 0 2.4 3.6 0 1 0 0 0 0 3.7 5.4 0 1 0 0 1 0 3.7 5.4 0 1 0 1 0 0 5.2 7.4 0 1 0 1 1 0 5.2 7.
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Philips Semiconductors Preliminary specification Universal Serial Bus (USB) CODEC UDA1325 Filter characteristics playback channel The overall filter characteristic of the UDA1325 in flat mode is given in Fig.4 (de-emphasis off). The overall filter characteristic of the UDA1325 includes the filter characteristics of the DSP in flat mode plus the filter characteristic of the FSDAC (fs = 44.
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Philips Semiconductors Preliminary specification Universal Serial Bus (USB) CODEC UDA1325 DSP extension port for enhanced playback audio processing An external DSP can be used for adding extra sound processing features via the I2S inputs and outputs of the digital I/O module. The UDA1325 supports the standard I2S-bus data protocol and the LSB-justified serial data input format with word lengths of 16, 18 and 20 bits.
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Philips Semiconductors Preliminary specification Universal Serial Bus (USB) CODEC UDA1325 PORT DEFINITION 80C51 Port 1 Table 13 Port 1 of the 80C51 microcontroller 8 BIT PORT 1 BIT FUNCTION 1.0 ADAC_error 1.1 GP1 1.2 GP2 1.3 GP3 1.4 GP4 1.5 GP5 1.6 SCL 1.7 SDA LOW HIGH no error COMMENT error general purpose pins I2C-bus Port 3 Table 14 Port 3 of the 80C51 microcontroller 8 BIT PORT 3 BIT FUNCTION LOW HIGH COMMENT 3.0 ASR_error no error error 3.
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Philips Semiconductors Preliminary specification Universal Serial Bus (USB) CODEC UDA1325 MEMORY AND REGISTER SPACE 80C51 ADDRESS Overview registers REGISTER RESET VALUE Port registers Table 15 Register location and recommended values after Power-on reset ADDRESS REGISTER 80h P0 FFh RESET VALUE 90h P1 FFh A0h P2 FFh B0h P3 FFh 0800h PGA gain 09 0801h ADIF control 5C 1000h clock shop settings 00 1001h reset control and APLL settings 00 1002h IO selection register 01 100
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Philips Semiconductors Preliminary specification Universal Serial Bus (USB) CODEC UDA1325 Internal registers Table 17 PGA gain registers ADDRESS 0800h REGISTER PGA gain register COMMENTS reserved PGA input selection BIT VALUE 7 X 6 0 (do not change it) PGA gain right channel 5, 4 and 3 000 = −3 dB 001 = 0 dB 010 = 3 dB 011 = 9 dB 100 = 15 dB 101 = 21 dB 110 = 27 dB 111 = 27 dB PGA gain left channel 2, 1 and 0 000 = −3 dB 001 = 0 dB 010 = 3 dB 011 = 9 dB 100 = 15 dB 101 = 21 dB 110 = 27 dB 11
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Philips Semiconductors Preliminary specification Universal Serial Bus (USB) CODEC UDA1325 Table 19 Clock shop register ADDRESS 1000h REGISTER clock shop settings COMMENTS selection ADC clock source BIT 7 VALUE 0 = ADC clock from APLL 1 = ADC clock from OSCAD divide factor Q 6 and 5 00 = ADC clock divided-by-1 01 = ADC clock divided-by-2 10 = ADC clock divided-by-4 11 = ADC clock divided-by-8 clock ADAC 4 0 = enable 1 = disable clock 48 MHz internal 3 0 = enable 1 = disable clock recovered
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Philips Semiconductors Preliminary specification Universal Serial Bus (USB) CODEC UDA1325 Table 21 I/O selection register ADDRESS 1002h REGISTER I/O selection register COMMENTS microcontroller control on 48 MHz oscillator BIT 7 VALUE 0 = UPC control disabled (48 MHz oscillator is enabled) 1 = UPC control enabled audio format 6 and 5 00 = 4-pins I2S 01 = 6-pins I2S 10 = 3-pins I2S (only input) 11 = 3-pins I2S (only input) GP4 I/O if BIT0 = 1 4 0 = output 1 = input GP3 I/O if BIT0 = 1 3 0 = o
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Philips Semiconductors Preliminary specification Universal Serial Bus (USB) CODEC UDA1325 Table 23 ASR control register ADDRESS 2000h REGISTER ASR control register COMMENTS robust word clock BIT 7 serial I2S-bus output format digital I/O interface 6 and 5 VALUE 0 = off (not recommended) 1 = on (recommended) 00 = I2S-bus 01 = 16-bit LSB justified 10 = 18-bit LSB justified 11 = 20-bit LSB justified phase inversion (on right mono output) bits per sample modi 4 0 = mono phase inversal off 1 = mono
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Philips Semiconductors Preliminary specification Universal Serial Bus (USB) CODEC UDA1325 AT INITIALISATION TIME • Bit 7of the power control register (mux_ctrl_suspend) must be set to ‘1’, in order to connect the CLK_ON of the USB processor with P3.1 of the microcontroller • Bit 6 of the power control register (mux_ctrl_int1) must be set to ‘0’, in order to connect the PSIE_MMU_INT output pin of the USB processor with P3.
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Philips Semiconductors Preliminary specification Universal Serial Bus (USB) CODEC UDA1325 COMMAND SUMMARY COMMAND NAME RECIPIENT CODING DATA PHASE Initialization commands Set address/enable device D0h write 1 byte Read address/enable device D0h read 1 byte Set endpoint enable device D8h write 1 byte Read endpoint enable device D8h read 1 byte Set mode device F3h write 1 byte Read interrupt register device F4h read 1 byte Select endpoint control OUT 00h read 1 byte (optiona
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Philips Semiconductors Preliminary specification Universal Serial Bus (USB) CODEC UDA1325 COMMAND DESCRIPTIONS Table 24 Command procedure BIT This chapter describes the commands that can be used by the microcontroller to control the USB processor. There are three basic types of commands: DESCRIPTION Address the value written becomes the device address Enable a ‘1’ enables this function • Initialization commands • Data flow commands READ ADDRESS/ENABLE • General commands. Command: D0h.
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Philips Semiconductors Preliminary specification Universal Serial Bus (USB) CODEC 7 6 5 4 3 2 1 UDA1325 An interrupt is also generated after a bus reset. When the interrupt register consists of all zeros, and an interrupt was generated, there was a bus reset. The interrupt is cleared when the interrupt register is read.
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Philips Semiconductors Preliminary specification Universal Serial Bus (USB) CODEC UDA1325 Table 26 Error codes ERROR CODE SET ENDPOINT STATUS Command: 40h + endpoint index. RESULT Data: write 1 byte. 0000 no error 0001 PID encoding error; bits 7 to 4 in the PID token are not the inversion of bits 3 to 0 0010 PID unknown; PID encoding is valid, but PID does not exist This command is used to stall or unstall an endpoint. Only the least significant bit has a meaning.
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Philips Semiconductors Preliminary specification Universal Serial Bus (USB) CODEC UDA1325 acknowledged explicitly that it has seen the SETUP packet. The data in the buffer are organized as follows: Byte 0: transfer successful, number of data bytes (MSB) If the microcontroller is reading the data from a SETUP packet, and a new SETUP packet arrives, the device must accept this new SETUP packet. So the data, currently being read by the microcontroller, is overwritten with the new packet.
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Philips Semiconductors Preliminary specification Universal Serial Bus (USB) CODEC UDA1325 VALIDATE BUFFER S1CON register Command: FAh. The CPU can read from and write to this 8-bit SFR. Two bits are effected by the SIO1 hardware: the SI bit is set when a serial interrupt is requested, and the STO bit is cleared when a STOP condition is present on the I2C-bus. The STO bit is also cleared when ENS1 = ‘0’. Reset initializes S1CON to 00h. Data: none.
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Philips Semiconductors Preliminary specification Universal Serial Bus (USB) CODEC UDA1325 LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 134). SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT All digital I/Os VI/O DC input/output voltage range IO output current VDDE = 5.0 V −0.
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Philips Semiconductors Preliminary specification Universal Serial Bus (USB) CODEC UDA1325 DC CHARACTERISTICS VDDE = 5.0 V; VDD = 3.3 V; Tamb = 25 °C; fosc = 48 MHz; fs = 44.1 kHz; unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT Supplies VDDE digital supply voltage periphery 4.75 5.0 5.25 V VDDI digital supply voltage core 3.0 3.3 3.6 V VDDA1 analog supply voltage 1 3.0 3.3 3.6 V VDDA2 analog supply voltage 2 3.0 3.3 3.
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Philips Semiconductors Preliminary specification Universal Serial Bus (USB) CODEC SYMBOL PARAMETER UDA1325 CONDITIONS MIN. TYP. MAX. UNIT PGA and ADC Vref(AD) reference voltage PGA and ADC − 0.5VDDA2 − V Vref(ADC)(pos) positive reference voltage of the ADC − VDDA2 − V Vref(ADC)(neg) negative reference voltage of the ADC − 0.0 − V VI(PGA) DC input voltage VINL and VINR of the PGA − 0.5VDDA2 − V RI(PGA) DC input resistance at VINL and VINR of the PGA − 12.
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Philips Semiconductors Preliminary specification Universal Serial Bus (USB) CODEC UDA1325 AC CHARACTERISTICS VDDE = 5.0 V; VDDI = 3.3 V; Tamb = 25 °C; fosc = 48 MHz; fs = 44.1 kHz; unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX.
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Philips Semiconductors Preliminary specification Universal Serial Bus (USB) CODEC SYMBOL PARAMETER UDA1325 CONDITIONS MIN. TYP. MAX. UNIT SDA and SCL lines for 100 kHz I2C devices fSCL SCL clock frequency 0 − 100 kHz tBUF bus free time between a STOP and START condition 4.7 − − µs tHD;STA hold time (repeated) START condition 4.0 − − µs tLOW LOW period of the SCL clock 4.7 − − µs tHIGH HIGH period of the SCL clock 4.
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Philips Semiconductors Preliminary specification Universal Serial Bus (USB) CODEC SYMBOL PARAMETER UDA1325 CONDITIONS MIN. TYP. MAX. UNIT Analog PLL (for ADC clock) fclk(PLL) PLL clock frequency 8.1920 11.2896 12.
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Philips Semiconductors Preliminary specification Universal Serial Bus (USB) CODEC SYMBOL PARAMETER UDA1325 CONDITIONS MIN. TYP. MAX. UNIT Filter stream DAC RES resolution 16 − − bits Vo(FS)(rms) full-scale output voltage (RMS value) VDD = 3.3 V − 0.66 − V SVRR supply voltage ripple rejection at VDDA and VDDO fripple = 1 kHz Vripple(p-p) = 0.1 V − 60 − dB ∆Vo channel unbalance maximum volume − 0.
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Philips Semiconductors Preliminary specification Universal Serial Bus (USB) CODEC UDA1325 APPLICATION INFORMATION +VA handbook, full pagewidth +VA R35 1Ω C34 47 µF (16 V) C38 GP0/BCKI BCKI GP5/WSI WSI GP1/DI DI BCK BCK digital input recording WS WS DA DA 47 µF (16 V) C21 100 nF (63 V) 100 nF (63 V) VSSA1 VDDA1 VSSA2 39 digital input playback R27 1Ω C32 38 44 VDDA2 42 17 15 13 61 59 57 +VC L1 X4 1 2 3 4 R48 1.
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Philips Semiconductors Preliminary specification Universal Serial Bus (USB) CODEC +VA handbook, full pagewidth +VA R10 1Ω C7 55 R8 1Ω C11 47 µF (16 V) C19 100 nF (63 V) VSSA3 UDA1325 100 nF (63 V) VDDA3 VRN 52 49 VRP 51 56 58 60 62 64 3 5 7 50 P0.0 D7 P0.1 D6 P0.2 D5 P0.3 D4 P0.4 D3 P0.5 D2 P0.6 D1 P0.
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Philips Semiconductors Preliminary specification Universal Serial Bus (USB) CODEC UDA1325 PACKAGE OUTLINES seating plane SDIP42: plastic shrink dual in-line package; 42 leads (600 mil) SOT270-1 ME D A2 L A A1 c e Z b1 (e 1) w M MH b 22 42 pin 1 index E 1 21 0 5 10 mm scale DIMENSIONS (mm are the original dimensions) UNIT A max. A1 min. A2 max. b b1 c D (1) E (1) e e1 L ME MH w Z (1) max. mm 5.08 0.51 4.0 1.3 0.8 0.53 0.40 0.32 0.23 38.9 38.4 14.0 13.7 1.
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Philips Semiconductors Preliminary specification Universal Serial Bus (USB) CODEC UDA1325 QFP64: plastic quad flat package; 64 leads (lead length 1.95 mm); body 14 x 20 x 2.8 mm SOT319-2 c y X 51 A 33 52 32 ZE e E HE A A2 (A 3) A1 θ wM pin 1 index Lp bp L 20 64 detail X 19 1 ZD w M bp e v M A D B HD v M B 0 5 10 mm scale DIMENSIONS (mm are the original dimensions) UNIT A max. A1 A2 A3 bp c D (1) E (1) e HD HE L Lp v w y mm 3.20 0.25 0.05 2.90 2.
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Philips Semiconductors Preliminary specification Universal Serial Bus (USB) CODEC UDA1325 Typical reflow peak temperatures range from 215 to 250 °C. The top-surface temperature of the packages should preferable be kept below 230 °C. SOLDERING Introduction This text gives a very brief insight to a complex technology. A more in-depth account of soldering ICs can be found in our “Data Handbook IC26; Integrated Circuit Packages” (document order number 9398 652 90011).
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Philips Semiconductors Preliminary specification Universal Serial Bus (USB) CODEC UDA1325 Suitability of IC packages for wave, reflow and dipping soldering methods SOLDERING METHOD MOUNTING PACKAGE WAVE REFLOW(1) DIPPING Through-hole mount DBS, DIP, HDIP, SDIP, SIL suitable(2) − suitable Surface mount not suitable suitable − suitable − suitable − not recommended(4)(5) suitable − not recommended(6) suitable − BGA, SQFP suitable(3) HLQFP, HSQFP, HSOP, HTSSOP, SMS not PLCC(4), S
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Philips Semiconductors Preliminary specification Universal Serial Bus (USB) CODEC UDA1325 DEFINITIONS Data sheet status Objective specification This data sheet contains target or goal specifications for product development. Preliminary specification This data sheet contains preliminary data; supplementary data may be published later. Product specification This data sheet contains final product specifications.
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Philips Semiconductors – a worldwide company Argentina: see South America Australia: 34 Waterloo Road, NORTH RYDE, NSW 2113, Tel. +61 2 9805 4455, Fax. +61 2 9805 4466 Austria: Computerstr. 6, A-1101 WIEN, P.O. Box 213, Tel. +43 1 60 101 1248, Fax. +43 1 60 101 1210 Belarus: Hotel Minsk Business Center, Bld. 3, r. 1211, Volodarski Str. 6, 220050 MINSK, Tel. +375 172 20 0733, Fax. +375 172 20 0773 Belgium: see The Netherlands Brazil: see South America Bulgaria: Philips Bulgaria Ltd.