STA381BWSTR STMicroelectronics, STA381BWSTR Datasheet - Page 58

• 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

Register description: New Map
Note:
6.13.2
6.13.3
58/171
Table 28.
(*): Clock is BICKI
Interpolation ratio selection
Table 29.
The STA381BWS has variable interpolation (oversampling) settings such that internal
processing and FFX output rates remain consistent. The first processing block interpolates
by either 3 times
provides a 2-times downsample. The oversampling ratio of this interpolation is determined
by the IR bits.
Table 30.
Fault-detect recovery bypass
Table 31.
32, 44.1, 48
88.2, 96
176.4, 192
sampling rate
Bit
Bit
4:3
7
Input sampling rate fs (kHz)
fs (kHz)
Input
R/W
R/W
R/W
R/W
Input sampling rates
Internal interpolation ratio
IR bit settings as a function of the input sampling rate
Fault-detect recovery bypass
176.4
44.1
88.2
192
32
48
96
1X
(Table 83: PLL register 0x56 bits
00
01
IR
RST
RST
0
00
64*fs(*)
64*fs(*) 32*fs(*)
64*fs(*) 32*fs(*)
111
IR [1:0]
Name
Doc ID 018937 Rev 6
Name
FDRB
110
NA
00
00
00
01
01
10
10
IR
Selects internal interpolation ratio based on input I
sampling frequency
576 * fs 128 * fs 256 * fs 384 * fs 512 * fs 768 * fs
101
NA
NA
0: fault-detect recovery enabled
1: fault-detect recovery disabled
64 * fs
32 * fs
100
D0), 2 times or 1 time (pass-through) or
MCS[2:0]
1st stage interpolation ratio
2-times downsampling
2-times downsampling
128 * fs 192 * fs 256 * fs 384 * fs
2-times oversampling
2-times oversampling
2-times oversampling
64 * fs
011
Description
Pass-through
Pass-through
Description
96 * fs
010
128 * fs 192 * fs
001
STA381BWS
2
000
S