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Stereo Audio Codec with USB Interface, Single-Ended Analog Input/Output and S/PDIF
V2902
1
1. General Description
The V2902 is a single-chip USB stereo audio codec with USB-compliant full-speed protocol controller and S/PDIF. The USB protocol controller works with no software code, but the USB descriptors can be modified in some areas (e.g., vendor ID/product ID). The V2902 employs SpActTM architecture, an unique system that recovers the audio clock from USB packet data. On-chip analog PLLs with SpAct enable playback and record with low clock jitter and with independent playback and record sampling rates. It is mainly be used in many areas, such as USB Audio Speaker, USB Headset, USB Monitor and USB Audio Interface Box.
Features:
With S/PDIF
• On-Chip USB Interface– With Full-Speed Transceivers– Fully Compliant With USB 1.1 Specifi cation– Certifi ed by USB-IF– Partially Programmable Descriptors– USB Adaptive Mode for Playback– USB Asynchronous Mode for Record– Bus Powered
• 16-Bit Delta Sigma ADC and DAC• Sampling Rate
– DAC: 32, 44.1, 48 kHz– ADC: 8, 11.025, 16, 22.05, 32, 44.1, 48 kHz
• With Single 12-MHz Clock Source• Single Power Supply: 5 V TYP (VBUS)• Stereo ADC
– Analog Performance at VBUS = 5 V– THD+N = 0.01%– SNR = 89 dB– Dynamic Range = 89 dB– Decimation Digital Filter– Pass-Band Ripple = ±0.05 dB– Stop-Band Attenuation = –65 dB– Single-Ended Voltage Input– Antialiasing Filter Included– Digital LCF Included
V2902
2
• Stereo DAC– Analog Performance at VBUS = 5 V– THD+N = 0.005%– SNR = 96 dB– Dynamic Range = 93 dB– Oversampling Digital Filter– Pass-Band Ripple = ±0.1 dB– Stop-Band Attenuation = –43 dB– Single-Ended Voltage Output– Analog LPF Included
• Multifunctions:– Human Interface Device (HID) Volume ± Control and Mute Control– Suspend Flag
• Package: 28-Pin SSOP
V2902
3
2. Block Diagram and Pin Description
2.1 Block Diagram
VCCCI VCCP1I VCCP2I VCCXI VDDI AGNDC
DIN S/PDIF Decoder
S/PDIF Decoder
Selector
AnalogPLL
ISO-InEnd-Point
PowerManager
ISO-OutEnd-Point
HIDEnd-Point
USBProtocol
Controller
USB
SIE
XCVR
D+
SSPND
VBUS
D-
SEL0SEL1
HID0HID1HID2
Tracker(SpAct)PLL (x8)
96 MHz
12 MHz XTOXTI
ControlEnd-Point
AnalogPLL
FIFO
FIFO
5-V to 3.3-V Voltage Regulator
Lock
ADC
DAC
VINL
VOUTL
VINR
VOUTR
VCOM
DOUT
AGNDP AGNDX DGND DGNDU
V2902
4
2.2 PIn Configurations
2.3 Pin Description
D+D-
DGNDUHID0HID1HID2SEL0SEL1
AGNDC
VBUS
VCCCI
VCOM
VINLVINR
12
456789
11
3
10
14
1213
2827
252423222120
18
26
19
15
1716
SSPNDVDDI
DOUTDINVCCXI
AGNDXXTIXTO
AGNDP
DGND
VCCP2I
VOUTR
VCCP1I
VOUTL
Pin No. Pin Name I/O Description
1 D+ I/O USB differential input/output plus (1)
2 D– I/O USB differential input/output minus (1)
3 VBUS — Connect to USB power (VBUS)
4 DGNDU — Digital ground for USB transceiver
5 HID0 I HID key state input (mute), active high (3)
6 HID1 I HID key state input (volume up), active high (3)
7 HID2 I HID key state input (volume down), active high (3)
8 SEL0 I Must be set to high (6)
9 SEL1 I Must be set to high (6)
10 VCCCI — Internal analog power supply for codec (4)
11 AGNDC — Analog ground for codec
12 VINL I ADC analog input for L-channel
13 VINR I ADC analog input for R-channel
14 VCOM — Common for ADC/DAC (VCCCI/2) (4)
15 VOUTR O DAC analog output for R-channel
16 VOUTL O DAC analog output for L-channel
17 VCCP1I — Internal analog power supply for PLL (4)
18 AGNDP — Analog ground for PLL
19 VCCP2I — Internal analog power supply for PLL (4)
20 XTO O Crystal oscillator output
21 XTI I Crystal oscillator input (2)
22 AGNDX — Analog ground for oscillator
23 VCCXI — Internal analog power supply for oscillator (4)
24 DIN I S/PDIF input (5)
25 DOUT O S/PDIF output
26 DGND — Digital ground
27 VDDI — Internal digital power supply (4)
28 SSPND O Suspend flag, active low (Low: suspend, High: operational)
V2902
5
(1) LV-TTL level.
(2) 3.3-V CMOS level input.
(3) 3.3-V CMOS level input with internal pull-down. This pin informs the PC of serviceable control signals such as mute, volume up, or volume down, which has no connection with the internal DAC or ADC directly.
(4) Connect a decouple capacitor to GND.
(5) 3.3-V CMOS level input with internal pull-down, 5 V tolerant.
(6) TTL Schmitt trigger, 5 V tolerant.
3. Electrical Parameter
3.1 Absolute Maximum Ratings
(Tamb = 25 °C, All voltage referenced to GND, unless otherwise specified)
Characteristic Symbol Conditions Value Unit
Power Supply Voltage VBUS –0.3 to 6.5 V
Ground voltage AGNDC, AGNDP,
AGNDX, DGND, DGNDU±0.1 V
Input Current ICC ±10 mA
Digital input voltage
SEL0, SEL1, DIN −0.3 ~ 6.5 V
D+, D-, HID0, HID1, HID2, XTI, XTO,DOUT, SSPND
−0.3 ~ (VDDI+0.3) <4
Analog input voltage
VINL, VINR, VCOM, VOUTR, VOUTL
−0.3 ~ (VcccI+0.3) <4 V
VCCCI, VCCP1I, VCCP2I, VCCXI, VDDI
−0.3 ~ 4
Operating Temperature Topr −40 ~ 125 °C
Storage Temperature Tstg −55 ~ 150 °C
Soldering Temperature TL 5s 260 °C
V2902
6
3.2 Electrical Characteristics
3.2.1 DC Characteristics (All specifications at TA = 25 °C, VBUS = 5 V, fS = 44.1 kHz, fIN = 1 kHz, 16-bit data, unless otherwise noted)
Parameter Symbol Pins Conditions Min. Typ. Max. Unit
High-level input voltage VIH
D+, D− 2 3.3
VXTI, HID0, HID1, HID2 2.52 3.3
SEL0, SEL1 2 5.25
DIN 2.52 5.25
Low-level input voltage VIL
D+, D− 0.8
VXTI, HID0, HID1, HID2 0.9
SEL0, SEL1 0.8
DIN 0.9
High-level input current IIH
D+,D−,XTI, SEL0, SEL1 VIN = 3.3 V ±10
μAHID0, HID1, HID2 VIN = 3.3 V 50 80
DIN VIN = 3.3 V 65 100
Low-level input current IIL
D+,D−,XTI, SEL0, SEL1 VIN = 0 V ±10
μAHID0, HID1, HID2 VIN = 0 V ±10
DIN VIN = 0 V ±10
High-level output voltage VOH
D+, D− 2.8
VDOUT IOH = –4 mA 2.8
SSPND IOH= –2 mA 2.8
Low-level output voltage VOL
D+, D− 0.3
VDOUT IOL = 4 mA 0.5
SSPND IOL =2 mA 0.5
Input clock frequency XTI 11.994 12 12.006 MHz
V2902
7
3.2.2 AC Characteristics (All specifi cations at TA = 25°C, VBUS = 5 V, fS = 44.1 kHz, fIN = 1 kHz, 16-bit data, unless otherwise noted)
Parameter Symbol Conditions Min. Typ. Max. Unit
Dynamic Performance
Total harmonic distortion plus noise THD+N
VCCCI =3.67 V,VIN = –0.5 dB
0.01 0.02
%VIN = –0.5 dB 0.1
VIN = –60 dB 5
Dynamic range A-weighted 81 89 dB
Signal-to-noise ratio SNR A-weighted 81 89 dB
Channel separation 80 89 dB
Analog Input
Input voltage 0.6 VCCCI VP-P
Center voltage 0.5 VCCCI V
Input impedance 30 kΩ
−3 dB 150 kHz
fIN = 20 kHz −0.08 dB
Digital Filter Performance
Pass band 0.454 fS Hz
Stop band 0.583 fS Hz
Pass-band ripple ±0.05 dB
Stop-band attenuation −65 dB
Delay time td 17.4/fS s
Clock Frequency
Sampling frequency 32, 44.1, 48 kHz
Dynamic Performance
Total harmonic distortion plus noise THD+NVOUT = 0 dB 0.005 0.016
%VOUT = –60 dB 3
Dynamic range EIAJ, A-weighted 87 93 dB
Signal-to-noise ratio SNR EIAJ, A-weighted 90 96 dB
Channel separation 86 92 dB
Analog Output
Output voltage VO 0.6 VCCCI VP-P
Center voltage 0.5 VCCCI V
Load impedance AC coupling 10 kΩ
LPF frequency response–3 dB 250 kHz
f = 20 kHz −0.03 dB
Digital Filter Performance
Pass band 0.445 fS Hz
Stop band 0.555 fS Hz
Pass-band ripple ±0.1 dB
Stop-band attenuation −43 dB
Delay time td 14.3 fS s
V2902
8
4. Characteristic Curve
ADC
Parameter Symbol Conditions Min. Typ. Max. Unit
Power Supply Requirements
Voltage range VBUS 4.35 5 5.25 VDC
Supply current56 67 mA
Suspend mode 210 μA
Power dissipation PD
ADC, DAC operation
280 352 mW
Suspend mode 1.05 mW
Internal power supply voltageVCCCI, VCCP1I,
VCCP2I, VCCXI, and VDDI
3.25 3.35 3.5 VDC
TOTAL HARMONIC DISTORTION + NOISE at -0.5 dBvs
FREE-AIR TEMPERATURE
Figure 1 Figure 2
Figure 3
VBUS - Supply Voltage - V VBUS - Supply Voltage - V
Dynamic Range
SNR
Dynamic Range
SNR
Dyn
amic
Ran
ge a
nd S
NR
- dB
Dyn
amic
Ran
ge a
nd S
NR
- dB
THD
+N -
Tota
l Har
mon
ic D
isto
rtio
n +
Noi
se -
%TH
D+N
- To
tal H
arm
onic
Dis
tort
ion
+ N
oise
- %
TA - Free Air Temperature - °C TA - Free Air Temperature - °C
Figure 4
TOTAL HARMONIC DISTORTION + NOISE at -0.5 dBvs
SUPPLY VOLTAGE
DYNAMIC RANGE and SNRvs
FREE-AIR TEMPERATURE
DYNAMIC RANGE and SNRvs
SUPPLY VOLTAGE
0.010
0.009
0.008
0.007
0.006
0.005
0.004
0.003
0.010
0.009
0.008
0.007
0.006
0.005
0.004
0.003
95
90
85
80
75
95
90
85
80
75
-50 -25 0 25 50 75 100
4.0 4.5 5.0 5.5 4.0 4.5 5.0 5.5
-50 -25 0 25 50 75 100
V2902
9
DAC
TOTAL HARMONIC DISTORTION + NOISE at 0 dBvs
FREE-AIR TEMPERATURE
THD
+N -
Tota
l Har
mon
ic D
isto
rtio
n +
Noi
se -
%
TOTAL HARMONIC DISTORTION + NOISE at 0 dBvs
SUPPLY VOLTAGE
THD
+N -
Tota
l Har
mon
ic D
isto
rtio
n +
Noi
se -
%
TOTAL HARMONIC DISTORTION + NOISE at 0 dBvs
SAMPLING FREQUENCY
THD
+N -
Tota
l Har
mon
ic D
isto
rtio
n +
Noi
se -
%
Dyn
amic
Ran
ge a
nd S
NR
- dB
DYNAMIC RANGE and SNRvs
FREE-AIR TEMPERATURE
Dyn
amic
Ran
ge a
nd S
NR
- dB
DYNAMIC RANGE and SNRvs
SUPPLY VOLTAGED
ynam
ic R
ange
and
SN
R - d
B
DYNAMIC RANGE and SNRvs
SAMPLING FREQUENCY
Figure 7 Figure 8
Figure 9
VBUS - Supply Voltage - V VBUS - Supply Voltage - V
TA - Free Air Temperature - °C TA - Free Air Temperature - °C
Figure 10
Figure 11
fS - Sampling Frequency - kHz fS - Sampling Frequency - kHz
Figure 12
0.008
0.007
0.006
0.005
0.004
0.003
0.008
0.007
0.006
0.005
0.004
0.003
0.008
0.007
0.006
0.005
0.004
0.003
-50 -25 0 25 50 75 100 -50 -25 0 25 50 75 100
98
96
97
94
95
92
93
90
91
98
96
97
94
95
92
93
90
91
98
96
97
94
95
92
93
90
91
4.0 4.5 5.0 5.5
30 35 40 45 50 30 35 40 45 50
4.0 4.5 5.0 5.5
Dynamic Range
SNR
Dynamic Range
SNR
Dynamic Range
SNR
V2902
10
SUPPLY CURRENT
OPERATIONAL and SUSPENDSUPPLY CURRENT
vsSUPPLY VOLTAGE
SUSPEND SUPPLY CURRENTvs
FREE-AIR TEMPERATURE
OPERATIONAL SUPPLY CURRENTvs
SAMPLING FREQUENCY
Figure 14fs - Sampling Frequency - kHz
Figure 15TA - Free-Air Temperature - °C
Figure 13VBUS - Supply Voltage- V
I CC -
Ope
rati
onal
Sup
ply
Curr
ent -
mA
I CC -
Susp
end
Supp
ly C
urre
nt -
mA
I CC -
Ope
rati
onal
Sup
ply
Curr
ent -
mA
I CC -
Susp
end
Supp
ly C
urre
nt -
mA
70
50
60
40
30
20
0.30
0.26
0.28
0.24
0.22
0.204.00 4.25 4.50 4.75 5.00 5.25 5.50
30 35 40 45 50 -40 0 40 80-20 20 60 100
60
70
50
40
30
20
0.30
0.40
0.35
0.25
0.20
0.15
0.10
ADC and DAC
USB Spec Limit for Device (0.3mA)
Suspend
Operational
V2902
11
ADC DIGITAL DECIMATION FILTER FREQUENCY RESPONSE
ADC DIGITAL HIGH-PASS FILTER FREQUENCY RESPONSE
OVERALL CHARACTERISTICS STOP-BAND ATTENUATION
TRANSITION-BAND RESPONSEPASS-BAND RIPPLE
Am
plit
ude
- dB
Am
plit
ude
- dB
Am
plit
ude
- dB
Am
plit
ude
- dB
Am
plit
ude
- dB
Frequency [x fS]
0
-20
-40
-60
-80
-100
-120
-140
-160
Am
plit
ude
- dB
0
-30
-20
-10
-40
-50
-60
-70
-80
-90
-100
-30
-20
-10
0
-40
-50
-60
-70
-80
-90
-100
0.0
0.2
-0.2
-0.4
-0.6
-0.8
-4
0
-8
-12
-16
-20
-0.2
0.0
-0.4
-0.6
-0.8
-1.0
0 8 16 24 32
0.0 0.1 0.2 0.3 0.4 0.5
0.0 0.1 0.2 0.3 0.4 0 1 2 3 4
0.46 0.48 0.50 0.52 0.54
0.0 0.2 0.4 0.6 0.8 1.0
Figure 16
STOP-BAND CHARACTERISTIC PASS-BAND CHARACTERISTIC
Frequency [x fS]
Figure 18
Frequency [x fS]
Figure 19
Frequency [x fS/1000]
Figure 20
Frequency [x fS/1000]
Figure 21
Frequency [x fS]
Figure 17
OVERALL CHARACTERISTICS STOP-BAND ATTENUATION
TRANSITION-BAND RESPONSEPASS-BAND RIPPLE
Am
plit
ude
- dB
Am
plit
ude
- dB
Am
plit
ude
- dB
Am
plit
ude
- dB
Am
plit
ude
- dB
Frequency [x fS]
0
-20
-40
-60
-80
-100
-120
-140
-160
Am
plit
ude
- dB
0
-30
-20
-10
-40
-50
-60
-70
-80
-90
-100
-30
-20
-10
0
-40
-50
-60
-70
-80
-90
-100
0.0
0.2
-0.2
-0.4
-0.6
-0.8
-4
0
-8
-12
-16
-20
-0.2
0.0
-0.4
-0.6
-0.8
-1.0
0 8 16 24 32
0.0 0.1 0.2 0.3 0.4 0.5
0.0 0.1 0.2 0.3 0.4 0 1 2 3 4
0.46 0.48 0.50 0.52 0.54
0.0 0.2 0.4 0.6 0.8 1.0
Figure 16
STOP-BAND CHARACTERISTIC PASS-BAND CHARACTERISTIC
Frequency [x fS]
Figure 18
Frequency [x fS]
Figure 19
Frequency [x fS/1000]
Figure 20
Frequency [x fS/1000]
Figure 21
Frequency [x fS]
Figure 17
V2902
12
ADC ANALOG ANTIALIASING FILTER FREQUENCY RESPONSE
DAC DIGITAL INTERPOLATION FILTER FREQUENCY RESPONSE
STOP-BAND CHARACTERISTIC PASS-BAND CHARACTERISTIC
STOP-BAND ATTENUATION PASS-BAND RIPPLE
Am
plit
ude
- dB
f - Frequency - kHz
0
-10
-20
-30
-40
-501 10 100 1k 10k
Figure 22
f - Frequency - kHz
Figure 23
Frequency[x fS]
Figure 24
Frequency[x fS]
Figure 25
PASS-BAND RIPPLE
Frequency[x fS]
Figure 26
Am
plit
ude
- dB
-30
-20
-10
0
-40
-50
-60
-70
-80
-90
-100
-6
-4
-2
0
-8
-10
-12
-14
-16
-18
-20
0 1 2 3 4 0.0 0.1 0.2 0.3 0.4 0.5
0.46 0.47 0.48 0.49 0.50 0.51 0.52 0.53 0.54
Am
plit
ude
- dB
Am
plit
ude
- dB
0.0
0.2
-0.2
-0.4
-0.6
-0.8
Am
plit
ude
- dB
-0.2
0.0
-0.4
-0.6
-0.8
-1.00.01 0.1 1 10 100
STOP-BAND CHARACTERISTIC PASS-BAND CHARACTERISTIC
STOP-BAND ATTENUATION PASS-BAND RIPPLE
Am
plit
ude
- dB
f - Frequency - kHz
0
-10
-20
-30
-40
-501 10 100 1k 10k
Figure 22
f - Frequency - kHz
Figure 23
Frequency[x fS]
Figure 24
Frequency[x fS]
Figure 25
PASS-BAND RIPPLE
Frequency[x fS]
Figure 26
Am
plit
ude
- dB
-30
-20
-10
0
-40
-50
-60
-70
-80
-90
-100
-6
-4
-2
0
-8
-10
-12
-14
-16
-18
-20
0 1 2 3 4 0.0 0.1 0.2 0.3 0.4 0.5
0.46 0.47 0.48 0.49 0.50 0.51 0.52 0.53 0.54
Am
plit
ude
- dB
Am
plit
ude
- dB
0.0
0.2
-0.2
-0.4
-0.6
-0.8
Am
plit
ude
- dB
-0.2
0.0
-0.4
-0.6
-0.8
-1.00.01 0.1 1 10 100
V2902
13
DAC ANALOG FIR FILTER FREQUENCY RESPONSE
DAC ANALOG LOW-PASS FILTER FREQUENCY RESPONSE
STOP-BAND CHARACTERISTIC
STOP-BAND CHARACTERISTIC PASS-BAND CHARACTERISTIC
PASS-BAND CHARACTERISTIC
Am
plit
ude
- dB
Am
plit
ude
- dB
-10
0
-20
-30
-40
-50
Am
plit
ude
- dB
-10
0
-20
-30
-40
-50
0 8 16 24 32
Frequency [x fS]
Figure 27
f - Frequency - kHz
Figure 29
f - Frequency - kHz
Figure 30
Frequency [x fS]
Figure 28
0.0
0.2
-0.2
-0.4
-0.6
-0.80.0 0.1 0.2 0.3 0.4 0.5
1 10 100 1k 10k
Am
plit
ude
- dB
-0.2
0.0
-0.4
-0.6
-0.8
-1.00.01 0.1 1 10 100
STOP-BAND CHARACTERISTIC
STOP-BAND CHARACTERISTIC PASS-BAND CHARACTERISTIC
PASS-BAND CHARACTERISTIC
Am
plit
ude
- dB
Am
plit
ude
- dB
-10
0
-20
-30
-40
-50
Am
plit
ude
- dB
-10
0
-20
-30
-40
-50
0 8 16 24 32
Frequency [x fS]
Figure 27
f - Frequency - kHz
Figure 29
f - Frequency - kHz
Figure 30
Frequency [x fS]
Figure 28
0.0
0.2
-0.2
-0.4
-0.6
-0.80.0 0.1 0.2 0.3 0.4 0.5
1 10 100 1k 10k
Am
plit
ude
- dB
-0.2
0.0
-0.4
-0.6
-0.8
-1.00.01 0.1 1 10 100
V2902
14
5. INTERFACE SEQUENCE
5.1 Power On, Attach, and Playback Sequence
The V2902 is ready for setup when the reset sequence has finished and the USB bus is attached. After connection has been established by setup, the V2902 is ready to accept USB audio data. While waiting, the audio data (idle state) and analog output are set to bipolar zero (BPZ).
When receiving the audio data, the V2902 stores the first audio packet, which contained 1-ms audio data, into the internal storage buffer. The V2902 starts playing the audio data when detecting the following start of frame (SOF) packet.
Figure 31.Initial Sequence
Figure 32.Play, Stop, and Detach
VBUS(Pin 3)
VBUS(Pin 3)
700μs
VOUTLVOUTR
VOUTLVOUTR
0 V
D+/D-
D+/D-
Bus Idle
Internal ResetReady for Setup Ready for Playback
Device Setup 1 ms
1 ms
BPZ
SOF
SOF SOF SOF SOF SOF
Detach
SOF SOF
2nd Audio Data1st Audio Data
Audio Data Audio Data Last Audio Data
Set Con�gurationBus Reset
2.5 V (Typ.)
5 V(Typ.)
Figure 31. Initial Sequence
Figure 32. Play, Stop, and Detach
SSPND
V2902
15
5.2 Play, Stop, and Detach Sequence
When the host finishes or aborts the playback, the V2902 stops playing after the last audio data has played.
5.3 Record Sequence
The V2902 starts the audio capture into the internal memory after receiving the SET_INTERFACE command.
Figure 31.Initial Sequence
Figure 32.Play, Stop, and Detach
VBUS(Pin 3)
VBUS(Pin 3)
700μs
VOUTLVOUTR
VOUTLVOUTR
0 V
D+/D-
D+/D-
Bus Idle
Internal ResetReady for Setup Ready for Playback
Device Setup 1 ms
1 ms
BPZ
SOF
SOF SOF SOF SOF SOF
Detach
SOF SOF
2nd Audio Data1st Audio Data
Audio Data Audio Data Last Audio Data
Set Con�gurationBus Reset
2.5 V (Typ.)
5 V(Typ.)
Figure 31. Initial Sequence
Figure 32. Play, Stop, and Detach
SSPND
Figure 33.Record Sequence
Figure 34.Suspend and Resume
SET_INTERFACE IN Token
D+/D-
D+/D-
Active 5 ms Suspend
Idle
Active
VINLVINR
SOF SOF
1 ms
Figure 33. Record Sequence
Figure 34. Suspend and Resume
SOF SOF SOF
IN Token IN TokenAudio Data Audio Data Audio Data
SSPND
V2902
16
5.4 Suspend and Resume Sequence
The V2902 enters the suspend state after it sees a constant idle state on the USB bus, approximately 5 ms. While the V2902 enters the suspend state, SSPND flag (pin 28) is asserted. The V2902 wakes up immediately when detecting the non-idle state on the USB bus.
6. Typical Application Circuit And Application Note
6.1 TYPICAL CIRCUIT CONNECTION 1
Figure 35 illustrates a typical circuit connection for a high-performance application. The circuit illustrated is for information only. The whole board design should be considered to meet the USB specification as a USB−compliant product.
Figure 33.Record Sequence
Figure 34.Suspend and Resume
SET_INTERFACE IN Token
D+/D-
D+/D-
Active 5 ms Suspend
Idle
Active
VINLVINR
SOF SOF
1 ms
Figure 33. Record Sequence
Figure 34. Suspend and Resume
SOF SOF SOF
IN Token IN TokenAudio Data Audio Data Audio Data
SSPND
D+1
2
3
4
5
6
7
8
9
10
11
12
13
14C2
C7
C6
C5
C4
C3
C8
C11
C12
C1
3.6 V −
22 kΩ
1.5 kΩ x 3 1.5 kΩ
22 Ω
22 Ω
IC1IN OUT GND ADJ EN1 2 3 4 5
12 kΩ
1 MΩ
12 MHz
LPF,Amp
MUTE/PowerDown
LPF,Amp
3.85V
C10
C9
28
27
26
25
24
23
22
21
20
19
18
17
16
15
D-
DGNDU
AGNDC
HID0
HID1
HID2
SEL0
SEL1
VBUS
D+
D-
GND
VBUS
VINL
VINR
VCOM
VCCCI
VCCC1I
VDDI
DOUT
AGNDP
DIN
VCCXI
AGNDX
XTI
XTO
DGND
VOUTL
VOUTR
VCCC2I
SSPND
NOTE:
C1, C2: 10 μFC3, C4, C7, C8: 1 μF (These capacitors must be less than 2 μF)C5, C6: 10 pF to 33 pF (depending on crystal resonator)C9, C10, C11, C12: The capacitance may vary depending on design.
Figure 35. Bus-Powered Con�guration for High-Performance Application
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17
6.2 TYPICAL CIRCUIT CONNECTION 2
Figure 36 illustrates a typical circuit connection for a simple application. The circuit illustrated is for information only. The whole board design should be considered to meet the USB specification as a USB−compliant product.
C7
C6
C5
C4
C3
C8
C11
C12
1 MΩ
12 MHz
LPF,Amp
MUTE/PowerDown
LPF,Amp
D+
D-
DGNDU
AGNDC
HID0
HID1
HID2
SEL0
SEL1
VBUS
VINL
VINR
VCOM
VCCCI
VCCC1I
VDDI
DOUT
AGNDP
DIN
VCCXI
AGNDX
XTI
XTO
DGND
VOUTL
VOUTR
VCCC2I
SSPND1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15C2
C1
C10
C9
22 Ω
22 Ω
1.5 kΩ x 4
D+
D-
GND
VBUS
NOTE:
C1, C2: 10 μFC3, C4, C7, C8: 1 μF (These capacitors must be less than 2 μF.)C5, C6: 10 pF to 33 pF (depending on crystal resonator)C9, C10, C11, C12: The capacitance may vary depending on design.In this case analog perfomance of the A/D converter may degrade.
Figure 36.Bus-Powered Con�guration
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7. Package Information
7.1 SSOP28
DIM/PINS** 14 16 20 24 28 30 38
A MAX 6,50 6,50 7,50 8,50 10,50 10,50 12,90
A MIN 5,90 5,90 6,90 7,90 9,90 9,90 12,30
A
2, 00 MAX 0, 05 MIN 0, 10
0, 25
0° − 8°
0, 65 0, 15
Seating Plane
Gage Plane
1 14
0, 380, 22
28 15
5, 605, 00
8, 207, 40
0, 950, 55
0, 250, 09
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19
8. Statements And Notes:
8.1 The name and content of Hazardous substances or Elements in the product
8.2 Notion:
Recommended carefully reading this information before the use of this product;
The information in this document are subject to change without notice;
This information is using to the reference only, the company is not responsible for any loss;
The company is not responsible for the any infringement of the third party patents or other rights of the responsibility.
Part name
Hazardous substances or Elements
Lead and leadcompounds
Mercury andmercury
compounds
Cadmiumand cadmiumcompounds
Hexavalentchromium
compounds
Polybrominatedbiphenyls
Polybrominatedbiphenyl ethers
Lead frame ○ ○ ○ ○ ○ ○
Plastic resin ○ ○ ○ ○ ○ ○
Chip ○ ○ ○ ○ ○ ○
The lead ○ ○ ○ ○ ○ ○
Plastic sheet installed ○ ○ ○ ○ ○ ○
explanation
○: Indicates that the content of hazardous substances or elements in the detection limit of the followingthe SJ/T11363-2006 standard.
×: Indicates that the content of hazardous substances or elements exceeding the SJ/T11363-2006Standard limit requirements.
