STA381BWSTR STMicroelectronics, STA381BWSTR Datasheet - Page 148
STA381BWSTR
Manufacturer Part Number
STA381BWSTR
Description
Audio DSPs Sound Terminal 2.1 High EFF Dig Audio
Manufacturer
STMicroelectronics
Datasheet
1.STA381BWSTR.pdf
(171 pages)
Specifications of STA381BWSTR
Product Category
Audio DSPs
Rohs
yes
Operating Supply Voltage
4.5 V to 25.5 V
Operating Temperature Range
0 C to + 150 C
Mounting Style
SMD/SMT
Package / Case
VQFN-48
Snr
100 dB
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Register description: Sound Terminal compatibility
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The output PLL frequency formula is:
where Fin is the input clock frequency from the pad.
Table 164. PLL factors
Table 165. PLL register 0x43 bits
Table 166. PLL register 0x44 bits
Bit
Bit
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
PLL parameter
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
FRAC
NDIV
IDIV
RST
RST
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
PLL_DITH(1:0)
PLL_IDIV (3:0)
PLL_STBBYP
Fin
PLL_DPD
PLL_FCT
PLL_STB
Doc ID 018937 Rev 6
Name
Name
NDIV
×
⎛
⎝
-------------------------- -
(
IDIV
(
NDIV
Min
‘00’: PLL clock dithering disabled
‘01’: PLL clock dithering enabled (triangular))
‘10’: PLL clock dithering enabled (rectangular)
‘11’: Reserved
PLL loop divider
‘0’: any PLL dividers change is implemented via PLL
power-down
‘1’: PLL divider change will happen without PLL
power-down
‘0’: PLL use integer ratio
‘1’: PLL use fractional ratio
PLL synchronous divider changes strobe
‘0’: PLL_STB is active
‘1’: PLL_STB control is bypassed
Input PLL divider
+
0
0
5
1
)
)
+
⎛
⎝
FRAC
---------------- -
65536
⎞
⎠
Description
Description
⎞
⎠
65535
Max
55
3
STA381BWS
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