STA321TR View Datasheet(PDF) - STMicroelectronics
Part Name
Description
Manufacturer
STA321TR Datasheet PDF : 157 Pages
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Pin description
STA321
Table 2. Pin list (continued)
Pin Pull
Name
Type
Description
52 - XTO
Out (digital), 1.8 V Crystal output
53 - XTI
In (digital), 1.8 V
Crystal input or master clock input
54 -
55 -
MCLK
SDATAI2
In (digital), schmitt tr Master clock input 3.3-V compatible, schmitt input
In (digital)
Input serial audio interface data
56 - SDATAI1
In (digital)
Input serial audio interface data
57 - SDATAO2
Out (digital)
Output serial audio interface data
58 - SDATAO1
Out (digital)
Output serial audio interface data
59 -
60 -
LRCLKI2
LRCLKI1
In/Out (digital)
In/Out (digital)
Input serial audio interface L/R-clock
Input serial audio interface L/R-clock
61 - LRCLKO
In/Out (digital)
Output serial audio interface L/R-clock
(volume DOWN when I2CDIS=1)
62 - BICLKI2
In/Out (digital)
Input serial audio interface bit clock
63 -
64 -
BICLKI1
BICLKO
In/Out (digital)
In/Out (digital)
Input serial audio interface bit clock
Output serial audio interface bit clock
(volume UP when I2CDIS=1)
Table 3. Power supply pin list
Number
Name
Type
Description
2
VCC1
Supply CMOS bridge channel 1 supply
4
GND1
5
GND2
Ground CMOS bridge channel 1 ground
Ground CMOS bridge channel 2 ground
7
VCC2
Supply CMOS bridge channel 2 supply
8
VCC3
Supply CMOS bridge channel 3 supply
10
GND3
Ground CMOS bridge channel 3 ground
15
GND33
16
VCC33
Ground CMOS bridge level shifter ground
Supply CMOS bridge level shifter supply
20
DGND1
Ground Digital ground
22
VDD_REG1
Supply DC regulator unit supply
23
VDDIO1
25
AGND
Supply 3.3-V IO supply
Ground ADC analog ground
28
AVDD
Supply ADC analog supply
45
DGND2
Ground Digital ground
46
VDD_REG2
Supply DC regulator unit supply
47
VDDIO2
49
PVDD
Supply
Supply
3.3-V IO supply
PLL analog supply
50
PGND
Ground PLL analog ground
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Doc ID 15351 Rev 3
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