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A S 3 5 4 2
U l t r a L o w P o w e r St e r e o A ud i o C o d e c w i t h S y s t e m P M U
1 General Description
The AS3542 is an ultra low power stereo audio codec
and is designed for Portable Digital Audio Applications.
It allows CD quality playback with up to 96dBA SNR and
recording in FM quality. With one microphone (including
pre-amplifier and supply for an electret microphone) and
one line input, it allows connecting a variety of audio
inputs. The different audio signals can be mixed via a 6-
channel mixer and fed to either a headphone output for
16 /32 headsets or a line output. The audio outputs
have also an auto fading implemented which performs
the fade-in, fade-out as well as the transition between
specific volume levels automatically with an selectable
timing.
Further the device offers advanced power management
functions. All necessary ICs and peripherals in a Digital
Audio Player are supplied by the AS3542. It features 2
DCDC converters for core and memory/periphery supply
as well as 4 LDOs. Both DCDC converter feature DVM
(dynamic voltage management) with an selectable tim-
ing for the voltage stepping. The different regulated sup-
ply voltages are programmable via the serial control
interface.
The step-up converter for the backlight can operate up
to 15V (with an external transistor even higher) in volt-
age and current control mode. An internal voltage pro-
tection is limiting the output voltage in the case of
external component failures. An automatic dimming
function allows a logarithmic on/off of the backlight with
selectable timing.
AS3542 also contains a Li-Ion battery charger with con-
stant current, constant voltage and trickle charging. The
maximum charging current is 460mA. An integrated bat-
tery switch is separating the battery during charging or
whenever an external power supply is present. With this
switch it is also possible to operate with no or deeply dis-
charged batteries.
The AS3542 has an on-chip, phase locked loop (PLL)
which generates the needed internal CODEC master
clock. I2S Frame and shift-clock have to be applied from
the processor for playback and recording.
The single supply voltage may vary from 2.7V to 5.5V.
www.austriamicrosystems.com
Data Sheet, Strictly Confidential
2 Key Features
Audio
Audio power consumption:
- 5mW: 95dB DAC to Headphone @ 1.8V, 32Ω
Sigma Delta Converters
DAC
- 96dB SNR ('A' weighted) @ 1.8V
ADC
- 85dB SNR ('A' weighted) @ 1.8V
Sampling Frequency
- DAC: 8-48kHz
- ADC: 8-24kHz
High Efficiency Headphone Amplifier
volume control via serial interface
32 steps @1.5dB and MUTE
2x12mW @16Ω driver capability@ 1.8V supply
THD -74dB @16Ω; 1.8V
2x40mW @16Ω driver capability@ 2.9V supply
THD -77dB @16Ω; 2.9V
headphone and over-current detection
Line Output
volume control via serial interface
32 steps @1.5dB and MUTE
0.6Vp @10kΩ
Microphone Input
3 gain pre-setting (30dB/36dB/42dB) and AGC
32 gain steps @1.5dB and MUTE
supply for electret microphone
microphone detection
remote control by switch
Line Input
volume control via serial interface
32 steps @1.5dB and MUTE
stereo or 2x mono
Revision 1.10
1 - 86
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Table of Contents
Summary of Contents for austriamicrosystems AS3542
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Page 1: General Description
U l t r a L o w P o w e r St e r e o A ud i o C o d e c w i t h S y s t e m P M U 1 General Description 2 Key Features The AS3542 is an ultra low power stereo audio codec Audio and is designed for Portable Digital Audio Applications. -
Page 2: Applications
AS3542 3v2 Data Sheet, Strictly Confidential - A p p l i c a t i o n s General Audio Mixer 6 channel input/output mixer with AGC Supervisor mixes line input and microphone with DAC automatic battery monitoring with interrupt genera-... - Page 3 AS3542 3v2 Data Sheet, Strictly Confidential - A p p l i c a t i o n s Figure 1. Block Diagram www.austriamicrosystems.com Revision 1.10 3 - 86...
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Page 4: Table Of Contents
AS3542 3v2 Data Sheet, Strictly Confidential - A p p l i c a t i o n s Contents 1 General Description ..........................1 2 Key Features ............................1 3 Applications ............................2 4 Pinout ..............................6 4.1 Pin Assignment ..............................6... - Page 5 AS3542 3v2 Data Sheet, Strictly Confidential - A p p l i c a t i o n s Revision History Table 1. Revision History Revision Date Owner Description official release 1.00 17.4.2009 added audio characterisation data 1.10 26.5.2009 www.austriamicrosystems.com Revision 1.10...
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Page 6: Pinout
AS3542 3v2 Data Sheet, Strictly Confidential - P i n o u t 4 Pinout Pin Assignment Figure 2. Pin Assignments (Top View) Pin Description Table 2. Pin Description for AS3542 Pin Number Pin Name Type Description Li-Ion Charger Output... - Page 7 AS3542 3v2 Data Sheet, Strictly Confidential - P i n o u t Table 2. Pin Description for AS3542 Pin Number Pin Name Type Description VSSPWR Power Management Neg. Supply Terminal Power Up Input PWRUP DIG IN Digital Pos. Supply (e.g. DAC, …)
- Page 8 AS3542 3v2 Data Sheet, Strictly Confidential - P i n o u t Table 2. Pin Description for AS3542 Pin Number Pin Name Type Description PVDD2 ANA OUT LDO4 Output (PVDD2) ANA OUT LDO3 Output (PVDD1) PVDD1 LDO3 Pos. Supply Terminal...
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Page 9: Absolute Maximum Ratings
AS3542 3v2 Data Sheet, Strictly Confidential - A b s o l u t e M a x i m u m R a t i n g s 5 Absolute Maximum Ratings Stresses beyond those listed in Table 3 may cause permanent damage to the device. - Page 10 AS3542 3v2 Data Sheet, Strictly Confidential - A b s o l u t e M a x i m u m R a t i n g s Table 3. Absolute Maximum Ratings Parameter Units Comments Bump Temperature (soldering)
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Page 11: Electrical Characteristics
AS3542 3v2 Data Sheet, Strictly Confidential - E l e c t r i c a l C h a r a c t e r i s t i c s 6 Electrical Characteristics BVDD=+2.7V...+5.5V, T =-20ºC...+85ºC. Typical values are at BVDD=+3.6V, T =+25ºC, unless otherwise specified. - Page 12 AS3542 3v2 Data Sheet, Strictly Confidential - E l e c t r i c a l C h a r a c t e r i s t i c s Table 4. Electrical Characteristics (Continued) Symbol Parameter Condition...
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Page 13: Audio Specification
AS3542 3v2 Data Sheet, Strictly Confidential - E l e c t r i c a l C h a r a c t e r i s t i c s Audio Specification BVDD=+3.6V, VDD27=+2.7V, HPVDD=FVDD=1.8V, VDD17=+1.7V, f =48kHz, T =+25ºC, unless otherwise specified. -
Page 14: Typical Operating Characteristics
AS3542 3v2 Data Sheet, Strictly Confidential - Ty p i c a l O p e r a t i n g C h a r a c t e r i s t i c s 7 Typical Operating Characteristics BVDD = +3.6V, T... -
Page 15: Detailed Description - Audio Functions
AS3542 3v2 Data Sheet, Strictly Confidential - D e t a i l e d D e s c r i p t i o n - A u d i o F u n c t i o n s... -
Page 16: Microphone Input
AS3542 3v2 Data Sheet, Strictly Confidential - D e t a i l e d D e s c r i p t i o n - A u d i o F u n c t i o n s 8.1.3... - Page 17 AS3542 3v2 Data Sheet, Strictly Confidential - D e t a i l e d D e s c r i p t i o n - A u d i o F u n c t i o n s 8.2.4...
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Page 18: Line Output
AS3542 3v2 Data Sheet, Strictly Confidential - D e t a i l e d D e s c r i p t i o n - A u d i o F u n c t i o n s 8.2.7... -
Page 19: Headphone Output
AS3542 3v2 Data Sheet, Strictly Confidential - D e t a i l e d D e s c r i p t i o n - A u d i o F u n c t i o n s 8.3.4... - Page 20 AS3542 3v2 Data Sheet, Strictly Confidential - D e t a i l e d D e s c r i p t i o n - A u d i o F u n c t i o n s 8.4.1...
- Page 21 AS3542 3v2 Data Sheet, Strictly Confidential - D e t a i l e d D e s c r i p t i o n - A u d i o F u n c t i o n s Figure 9.
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Page 22: Dac, Adc And I2S Digital Audio Interface
AS3542 3v2 Data Sheet, Strictly Confidential - D e t a i l e d D e s c r i p t i o n - A u d i o F u n c t i o n s Table 12. - Page 23 AS3542 3v2 Data Sheet, Strictly Confidential - D e t a i l e d D e s c r i p t i o n - A u d i o F u n c t i o n s 8.5.3...
- Page 24 AS3542 3v2 Data Sheet, Strictly Confidential - D e t a i l e d D e s c r i p t i o n - A u d i o F u n c t i o n s 8.5.6...
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Page 25: Audio Output Mixer
AS3542 3v2 Data Sheet, Strictly Confidential - D e t a i l e d D e s c r i p t i o n - A u d i o F u n c t i o n s 8.5.7... -
Page 26: 2-Wire-Serial Control Interface
Stop condition 1 bit WA++ Increment word address internally during acknowledge AS3542 (=slave) receives data AS3542 (=slave) transmits data Figure 13. Byte Write Figure 14. Page Write Byte Write and Page Write formats are used to write data to the slave. - Page 27 AS3542 3v2 Data Sheet, Strictly Confidential - D e t a i l e d D e s c r i p t i o n - A u d i o F u n c t i o n s For reading data from the slave device, the master has to change the transfer direction.
- Page 28 AS3542 3v2 Data Sheet, Strictly Confidential - D e t a i l e d D e s c r i p t i o n - A u d i o F u n c t i o n s 8.7.3...
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Page 29: Detailed Description - Power Management Functions
AS3542 3v2 Data Sheet, Strictly Confidential - D e t a i l e d D e s c r i p t i o n - P o w e r M a n a g e m e n t F u n c t i o n s... - Page 30 AS3542 3v2 Data Sheet, Strictly Confidential - D e t a i l e d D e s c r i p t i o n - P o w e r M a n a g e m e n t F u n c t i o n s 9.1.4...
- Page 31 AS3542 3v2 Data Sheet, Strictly Confidential - D e t a i l e d D e s c r i p t i o n - P o w e r M a n a g e m e n t F u n c t i o n s Figure 20.
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Page 32: Dcdc Step-Down Converter (2X)
AS3542 3v2 Data Sheet, Strictly Confidential - D e t a i l e d D e s c r i p t i o n - P o w e r M a n a g e m e n t F u n c t i o n s DCDC Step-Down Converter (2x) 9.2.1... - Page 33 AS3542 3v2 Data Sheet, Strictly Confidential - D e t a i l e d D e s c r i p t i o n - P o w e r M a n a g e m e n t F u n c t i o n s Low ripple, low noise operation: In this mode there is no minimum coil current necessary before switching off the PMOS.
- Page 34 AS3542 3v2 Data Sheet, Strictly Confidential - D e t a i l e d D e s c r i p t i o n - P o w e r M a n a g e m e n t F u n c t i o n s 9.2.3...
- Page 35 AS3542 3v2 Data Sheet, Strictly Confidential - D e t a i l e d D e s c r i p t i o n - P o w e r M a n a g e m e n t F u n c t i o n s Output voltage vs.
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Page 36: Step-Up Dcdc Converter
AS3542 3v2 Data Sheet, Strictly Confidential - D e t a i l e d D e s c r i p t i o n - P o w e r M a n a g e m e n t F u n c t i o n s 15V Step-Up DCDC Converter 9.3.1... - Page 37 AS3542 3v2 Data Sheet, Strictly Confidential - D e t a i l e d D e s c r i p t i o n - P o w e r M a n a g e m e n t F u n c t i o n s Table 23.
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Page 38: Charger
AS3542 3v2 Data Sheet, Strictly Confidential - D e t a i l e d D e s c r i p t i o n - P o w e r M a n a g e m e n t F u n c t i o n s 9.3.5... - Page 39 AS3542 3v2 Data Sheet, Strictly Confidential - D e t a i l e d D e s c r i p t i o n - P o w e r M a n a g e m e n t F u n c t i o n s Figure 28.
- Page 40 AS3542 3v2 Data Sheet, Strictly Confidential - D e t a i l e d D e s c r i p t i o n - P o w e r M a n a g e m e n t F u n c t i o n s Table 25.
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Page 41: Battery Switch
AS3542 3v2 Data Sheet, Strictly Confidential - D e t a i l e d D e s c r i p t i o n - P o w e r M a n a g e m e n t F u n c t i o n s Battery Switch 9.5.1... -
Page 42: Detailed Description - System Functions
AS3542 3v2 Data Sheet, Strictly Confidential - D e t a i l e d D e s c r i p t i o n - S Y S T E M F u n c t i o n s 10 Detailed Description - SYSTEM Functions 10.1... - Page 43 AS3542 3v2 Data Sheet, Strictly Confidential - D e t a i l e d D e s c r i p t i o n - S Y S T E M F u n c t i o n s 10.1.3 Start-up Sequence...
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Page 44: Hibernation
AS3542 3v2 Data Sheet, Strictly Confidential - D e t a i l e d D e s c r i p t i o n - S Y S T E M F u n c t i o n s 10.1.5 Register Description... -
Page 45: Supervisor
AS3542 3v2 Data Sheet, Strictly Confidential - D e t a i l e d D e s c r i p t i o n - S Y S T E M F u n c t i o n s 10.3... - Page 46 AS3542 3v2 Data Sheet, Strictly Confidential - D e t a i l e d D e s c r i p t i o n - S Y S T E M F u n c t i o n s STATUS CHANGE The IRQ gets active when the source-state changes.
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Page 47: Real Time Clock
AS3542 3v2 Data Sheet, Strictly Confidential - D e t a i l e d D e s c r i p t i o n - S Y S T E M F u n c t i o n s 10.5... -
Page 48: Gpio Pins
AS3542 3v2 Data Sheet, Strictly Confidential - D e t a i l e d D e s c r i p t i o n - S Y S T E M F u n c t i o n s 10.6.3 Parameter... -
Page 49: 12-24Mhz Oscillator
AS3542 3v2 Data Sheet, Strictly Confidential - D e t a i l e d D e s c r i p t i o n - S Y S T E M F u n c t i o n s Using a capacitor on this pin will delay the XRES signal. -
Page 50: Register Definition
11 Register Definition Table 42. I2C Register Overview Addr Name Audio Registers reserved reserved LOUT MUX_C<1:0> OUTR_VOL<4:0> OUT_R 0: HP; 0: SUM; 1: DAC; Gain from MUX_C to HPR/LOUTR= -40.5dB...+6dB 1: LOUT 2: LIN; 3: MIC OUTL_VOL<4:0> OUT_L MUTE_K_ON STAGE_ON HPDET_ON Gain from MUX_C to HPL/LOUTL= -40.5dB…+6dB reserved... - Page 51 Table 42. I2C Register Overview Addr Name I2S_ATTEN SDI_ATTEN<4:0> DAC_IF I2S_DIRECT I2S_LOOP 0: NoAtten Attenuation of I2S input data = -48dB...-1.5dB 1: AttenON reserved AudioSet1 ADC_ON DAC_ON DAC_GST_ON SDI_MUTE LIN_ON MIC_ON GAIN_STEP<1:0> VMICS<1:0> SUM_AGC_OF AudioSet2 BIAS_OFF SUM_OFF 0: 2ms; 1: 4ms; 0: VDD17*20/17, 1: VDD17*20/22 2: 8ms;...
- Page 52 Table 42. I2C Register Overview Addr Name VSEL_AVDD27<3:0> 18h-6 AVDD27 PRG_AVDD27 0x0 – 0x2: 2.3V 0x3 – 0xF: 2.0V + VSEL* 100mV ->(2.3V – 3.5V) VSEL_AVDD17<4:0> 18h-7 AVDD17 AVDD17_OFF PRG_AVDD17 0x00 – 0x1F: 1.65V + VSEL * 50mV -> (1.65V – 3.2V) CHG_I<2:0>...
- Page 53 Table 42. I2C Register Overview Addr Name PMU_WR_ENABLE <2:0> DC_TEST_MUX <3:0> SubRegister addresses for registers: 0: open; 1: VDD27; 2: VDD17; 0x17: DCDC regulators PMU_Enable PMU_GATE 3: PVDD1; 4: PVDD2; 5: CVDD1; 0x18: LDOs regulators 6: CVDD2; 7: RVDD; 8: FVDD; 0x19: Charger 9: PWGD;...
- Page 54 Table 42. I2C Register Overview Addr Name UID Register UID_0 ID<7:0> UID_1 ID<15:8> UID_2 ID<23:16> UID_3 ID<31:24> UID_4 ID<39:32> UID_5 ID<47:40> UID_6 ID<55:48> UID_7 ID<63:56>...
- Page 55 AS3542 3v2 Data Sheet, Strictly Confidential - R e g i s t e r D e f i n i t i o n Table 43. OUT_R Register Name Base Default OUT_R 2-wire serial Right HP/Line Output Register Configures MUX_C and the audio gain from MUX_C output to HPR/LOUTR output Offset: 02h and switches between the headphone and line output.
- Page 56 AS3542 3v2 Data Sheet, Strictly Confidential - R e g i s t e r D e f i n i t i o n Table 45. MIC_R Register Name Base Default MIC_R 2-wire serial Right Microphone Input Register Configures MUX_C and the audio gain from MUX_C output to HPR/LOUTR output Offset: 06h and switches between the headphone and line output.
- Page 57 AS3542 3v2 Data Sheet, Strictly Confidential - R e g i s t e r D e f i n i t i o n Table 47. LINE_IN_R Register Name Base Default LINE_IN_R 2-wire serial Right Line Input Register Configures the gain from right analog line input MUX E to mixer input (Σ) and controls Offset: 0Ah MUTE switch B.
- Page 58 AS3542 3v2 Data Sheet, Strictly Confidential - R e g i s t e r D e f i n i t i o n Table 49. DAC_R Register Name Base Default DAC_R 2-wire serial Right DAC Output Register Configures the gain from DAC output to mixer input (Σ).
- Page 59 AS3542 3v2 Data Sheet, Strictly Confidential - R e g i s t e r D e f i n i t i o n Table 51. ADC_R Register Name Base Default ADC_R 2-wire serial Right ADC Input Register Configures MUX_A and the gain from MUX_A output to the ADC/mixer input (Σ).
- Page 60 AS3542 3v2 Data Sheet, Strictly Confidential - R e g i s t e r D e f i n i t i o n Table 53. DAC_IF Register Name Base Default DAC_IF 2-wire serial DAC Interface Register Offset: 12h Configures the DAC interface and digital gain on the I2S input stream.
- Page 61 AS3542 3v2 Data Sheet, Strictly Confidential - R e g i s t e r D e f i n i t i o n Table 55. AudioSet2 Register Name Base Default AudioSet2 2-wire serial Second Audio Set Register Offset: 15h Control of various audio blocks.
- Page 62 AS3542 3v2 Data Sheet, Strictly Confidential - R e g i s t e r D e f i n i t i o n Table 57. CVDD1 Register Name Base Default CVDD1 2-wire serial CVDD1 DC/DC Buck Regulator Control Register Offset: 17h-1 This is an extended register and needs to be enabled by writing 001b to Reg.
- Page 63 AS3542 3v2 Data Sheet, Strictly Confidential - R e g i s t e r D e f i n i t i o n Table 59. Hibernation Register Name Base Default Hinbernation 2-wire serial PMU Hibernation Control Register Hibernation starts when writing this register.
- Page 64 AS3542 3v2 Data Sheet, Strictly Confidential - R e g i s t e r D e f i n i t i o n Table 60. DCDC_Cntr Register Name Base Default DCDC_Cntr 2-wire serial DC/DC Step Down Control Register Offset: 17h-7 This is an extended register and needs to be enabled by writing 111b to Reg.
- Page 65 AS3542 3v2 Data Sheet, Strictly Confidential - R e g i s t e r D e f i n i t i o n Table 62. PVDD2 Register Name Base Default PVDD2 2-wire serial PVDD2 Control Register Offset: 18h-2 This is an extended register and needs to be enabled by writing 010b to Reg.
- Page 66 AS3542 3v2 Data Sheet, Strictly Confidential - R e g i s t e r D e f i n i t i o n Table 64. AVDD17 Register Name Base Default AVDD17 2-wire serial AVDD17 Control Register Offset: 18h-7 This is an extended register and needs to be enabled by writing 111b to Reg.
- Page 67 AS3542 3v2 Data Sheet, Strictly Confidential - R e g i s t e r D e f i n i t i o n Table 66. CHGVBUS2 Register Name Base Default CHGVBUS2 2-wire serial Charger / VBUS 2 Control Register Offset: 19h-2 This is an extended register and needs to be enabled by writing 010b to Reg.
- Page 68 AS3542 3v2 Data Sheet, Strictly Confidential - R e g i s t e r D e f i n i t i o n Table 67. Out_Cntr1 Register Name Base Default Out_Cntr1 2-wire serial PWGD and XRES Output Control Register Offset: 1Ah-1 This is an extended register and needs to be enabled by writing 001b to Reg.
- Page 69 AS3542 3v2 Data Sheet, Strictly Confidential - R e g i s t e r D e f i n i t i o n Table 69. In_Cntr Register Name Base Default In_Cntr 2-wire serial HBT and Dimming Input Control Register Offset: 1Ah-4 This is an extended register and needs to be enabled by writing 100b to Reg.
- Page 70 AS3542 3v2 Data Sheet, Strictly Confidential - R e g i s t e r D e f i n i t i o n Table 71. PWM_Cntr Register Name Base Default PWM_Cntr 2-wire serial PWM Control Register Offset: 1Ah-6 This is an extended register and needs to be enabled by writing 110b to Reg.
- Page 71 AS3542 3v2 Data Sheet, Strictly Confidential - R e g i s t e r D e f i n i t i o n Table 73. DCDC15 Register Name Base Default DCDC15 2-wire serial DCDC15 Register Offset: 1Bh-1 This is an extended register and needs to be enabled by writing 001b to Reg. 1Ch first.
- Page 72 AS3542 3v2 Data Sheet, Strictly Confidential - R e g i s t e r D e f i n i t i o n Table 75. PMU_Enable Register Name Base Default PMU_Enable 2-wire serial PMU_Enable Register Selects the extended register on address 17h to 1Bh and enables writng to these PMU Offset: 1Ch-2 register.
- Page 73 AS3542 3v2 Data Sheet, Strictly Confidential - R e g i s t e r D e f i n i t i o n Table 76. SYSTEM Register Name Base Default SYSTEM 2-wire serial SYSTEM Register Offset: 20h This register is reset at a AVDD27-POR.
- Page 74 AS3542 3v2 Data Sheet, Strictly Confidential - R e g i s t e r D e f i n i t i o n Table 78. First Interrupt Register Name Base Default IRQENRD_0 2-wire serial First Interrupt Register Please be aware that writing to this register will enable/disable the...
- Page 75 AS3542 3v2 Data Sheet, Strictly Confidential - R e g i s t e r D e f i n i t i o n Table 79. Second Interrupt Register Name Base Default IRQENRD_1 2-wire serial Second Interrupt Register Please be aware that writing to this register will enable/disable the...
- Page 76 AS3542 3v2 Data Sheet, Strictly Confidential - R e g i s t e r D e f i n i t i o n Table 80. Thrid Interrupt Register Name Base Default IRQENRD_2 2-wire serial Third Interrupt Register Please be aware that writing to this register will enable/disable the...
- Page 77 AS3542 3v2 Data Sheet, Strictly Confidential - R e g i s t e r D e f i n i t i o n Table 80. Thrid Interrupt Register Name Base Default IRQENRD_2 2-wire serial Third Interrupt Register Please be aware that writing to this register will enable/disable the...
- Page 78 AS3542 3v2 Data Sheet, Strictly Confidential - R e g i s t e r D e f i n i t i o n Table 81. Fourth Interrupt Register Name Base Default IRQENRD_3 2-wire serial Fourth Interrupt Register Please be aware that writing to this register will enable/disable the...
- Page 79 AS3542 3v2 Data Sheet, Strictly Confidential - R e g i s t e r D e f i n i t i o n Table 82. Fifth Interrupt Register Name Base Default IRQENRD_4 2-wire serial Fifth Interrupt Register Please be aware that writing to this register will enable/disable the...
- Page 80 AS3542 3v2 Data Sheet, Strictly Confidential - R e g i s t e r D e f i n i t i o n Table 83. RTC_Cntr Register Name Base Default RTC_Cntr 2-wire serial RTC Control Register Offset: 28h This register is reset at a RVDD-POR.
- Page 81 AS3542 3v2 Data Sheet, Strictly Confidential - R e g i s t e r D e f i n i t i o n Table 86. UID_0 to UID_7 Register Name Base Default UID_0 to UID7 2-wire serial UNIQUE ID Register Offset: 38h to 3Fh This is a read only register and gets not reset.
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Page 82: Application Information
AS3542 3v2 Data Sheet, Strictly Confidential - A p p l i c a t i o n I n f o r m a t i o n 12 Application Information Figure 30. Typical Application Schematic www.austriamicrosystems.com Revision 1.10... -
Page 83: Package Drawings And Markings
AS3542 3v2 Data Sheet, Strictly Confidential - P a c k a g e D r a w i n g s a n d M a r k i n g s 13 Package Drawings and Markings Figure 31. MLF56 Marking Table 87. - Page 84 AS3542 3v2 Data Sheet, Strictly Confidential - P a c k a g e D r a w i n g s a n d M a r k i n g s Figure 32. MLF56 0.4mm pitch www.austriamicrosystems.com Revision 1.10...
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Page 85: Ordering Information
AS3542 3v2 Data Sheet, Strictly Confidential - O r d e r i n g I n f o r m a t i o n 14 Ordering Information Table 88. Ordering Information Model Description Delivery Form Package Ultra Low Power Stereo Audio Codec with System Tape &... - Page 86 The information furnished here by austriamicrosystems AG is believed to be correct and accurate. However, austriamicrosystems AG shall not be liable to recipient or any third party for any damages, including but not limited to personal injury, property damage, loss of profits, loss of use, interruption of business or indirect, special, incidental or consequential damages, of any kind, in connection with or arising out of the furnishing, performance or use of the tech- nical data herein.
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