AK5370 Просмотр технического описания (PDF) - Asahi Kasei Microdevices
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AK5370 Datasheet PDF : 27 Pages
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ASAHI KASEI
[AK5370]
No.
Signal Name
1 DGND
2 VD
3 DP
4 DN
5 TESTMODE3
6 XTALOUT
7 XTALIN
8 TESTMODE2
9 LFLT2
10 LFLT1
11 VCOM
12 MICIN
13 AMP1O
14 AMP2I
15 VA
16 AGND
17 VREF
18 AMP2O
19 TESTMODE1
20 MICBIAS
21 TEST
22 AGCE
23 AGC
24 RSTN
Pin/Function
I/O Ana / Dig
PD
PD
I/O D
I/O D
ID
OA
IA
IA
OA
OA
OA
IA
OA
IA
PA
PA
OA
OA
IA
OA
ID
ID
OD
ID
Description
Digital Ground
Digital Power Supply, 3.3V
USB bus Non-Inverting pin.
Because AK5370 is full speed mode device, 1.5k Ω resistor will
be connected between D+ node to VD.
USB bus Inverting Pin.
Please tie down to AGND for normal operation.
Crystal Oscillator Output, Connect Crystal Resonator
Crystal Oscillator Input, Connect Crystal Resonator
Please tie down to AGND for normal operation.
System clock PLL loop filter Pin. Connect 18k Ω resistor and
6800pF capacitor in series externally.
adPLL loop filter Pin. Connect 51kΩ resistor and 8200pF
capacitor in series externally.
Analog Common Voltage Reference Pin
Microphone Input
1st Amplifier Output Pin
2nd Amplifier Input Pin
Analog Power Supply, 3.3V
Analog Ground
ADC Common Voltage Reference Pin.
2nd Amplifier Output Pin
Please tie down to AGND for normal oper ation.
Voltage Reference Output for the Microphones bias voltage
When this chip goes into Suspend mode, this pin goes to Hi -Z.
Please tie down to AGND for normal operation.
AGC Enable Control Input Pin.
When the external AGC is used, High level should be applied
to this pin. When Low input is applied, AGC configuration
ROM data is set FALSE. Then AGC output is set to Low.
AGC Control Pin
When the host requests set AGC_CONTROL request, this pin
goes to H.
L level AGCE input prevents this AGC_CONTROL request.
Low level output at SUSPEND. Default output at Reset is
Low.
Reset Pin, Low input makes the chip reset sate.
Schmitt Trigger input.
MS0027-E-00
2
2000/05
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