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STA321 数据表(PDF) 11 Page - STMicroelectronics

部件名 STA321
功能描述  4-channel digital audio system with FFX??driver
PDF  157 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

STA321 数据表(HTML) 11 Page - STMicroelectronics

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STA321
Pin description
Doc ID 15351 Rev 3
11/157
17
-
CLKOUT
Out (digital)
Buffered clock output
18
-
SDA
In/Out (digital)
I2C serial data
19
H
MUTE
In (digital)
Mute (active high)
21
-
REG_BYPASS
In (analog)
DC regulator bypass:
0: normal operation, regulator enabled
1: regulator bypassed
24
-
BIAS
In/Out (analog)
ADC microphone bias voltage
26
-
VLO
In (analog)
ADC low reference voltage
27
-
VHI
In (analog)
ADC high reference voltage
29
-
INR1
In/Out (analog)
ADC right channel line input1
30
-
INR2
In/Out (analog)
ADC right channel line input2
31
-
VCM
In/Out (analog)
ADC common mode voltage
32
-
INL2
In (analog)
ADC left channel line input2 or microphone input2
33
-
INL1
In (analog)
ADC left channel line input1 or microphone input1
34
H
RSTN
In (digital)
Reset:
0: reset state
1: normal operation
35
-
STBY
In (digital)
Standby mode:
0: normal operation
1: power-down
36
-
EAPWM4
Out (digital)
External amplifier PWM 4B
37
-
EAPWM3
Out (digital)
External amplifier PWM 4A
38
-
EAPWM2
Out (digital)
External amplifier PWM 3B
39
-
EAPWM1
Out (digital)
External amplifier PWM 3A
40
H
EAFTN
Out (digital)
External power fault signal:
0: fault
1: normal operational mode
41
-
EATSN
Out (digital)
External amplifier control:
0: active
1: 3-state
42
-
EAPDN
Out (digital)
External amplifier powerdown (active low)
43
-
ACLK
In (digital), schmitt tr Reserved pin, connect to ground
44
L
I2CDIS
In (digital)
I2C disable:
0: I2C enabled
1: I2C disabled
48
L
TM
In (digital)
Test mode:
0: normal operation
51
-
NC
-
Not connected
Table 2.
Pin list (continued)
Pin Pull
Name
Type
Description



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