STA381BWSTR STMicroelectronics, STA381BWSTR Datasheet - Page 87

• Manufacturer Part Number: STA381BWSTR
• Description: Audio DSPs Sound Terminal 2.1 High EFF Dig Audio
• Manufacturer: STMicroelectronics

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

STA381BWS
6.27
PLL configuration registers (address 0x52; 0x53; 0x54; 0x55;
0x56; 0x57)
By default, the STA381BWS is able to configure the embedded PLL automatically
depending on the MCS bits (reg 0x00). For certain applications and to provide flexibility to
the user, a manual PLL configuration can be used (setting
The output PLL frequency formula is:
where Fin is the input clock frequency from the pad.
Table 80.
PLL_DPD
Reserved
Reserved
NA
D7
D7
D7
D7
D7
D7
0
0
0
0
0
PLL_DITH[1:0]
PLL parameter
FRAC
NDIV
PLL factors
IDIV
PLL_FCT
Reserved
Reserved
NA
D6
D6
D6
D6
D6
D6
0
0
0
0
0
PLL_DIRP
PLL_STB
Reserved
NA
D5
D5
D5
D5
D5
D5
Fin
0
0
0
0
0
Doc ID 018937 Rev 6
×
PLL_STBBYP
⎛
⎝
-------------------------- -
(
PLL_PWD
Reserved
IDIV
(
NA
NDIV
D4
D4
D4
D4
D4
D4
0
0
0
0
0
PLL_FRAC[15:8]
PLL_FRAC[7:0]
Min
+
0
0
5
1
)
BYPSTATE
)
PLL_BYP
+
NA
D3
D3
D3
D3
D3
D3
0
0
0
0
0
⎛
⎝
PLL_NDIV[5:0]
FRAC
---------------- -
65536
Register description: New Map
PLL_DIRP to ‘1’)
PDSTATE
OSC_PD
⎞
⎠
D2
D2
D2
D2
D2
D2
NA
⎞
⎠
0
0
0
0
0
PLL_IDIV[3:0]
Reserved
OSCOK
65535
NA
D1
D1
D1
D1
D1
D1
0
0
0
0
0
Max
55
3
BOOST32K
LOWCK
NA
D0
D0
D0
D0
D0
D0
0
0
0
0
0
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