STA381BWSTR STMicroelectronics, STA381BWSTR Datasheet - Page 110

• 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: Sound Terminal compatibility
110/171
Table 109. Supported serial audio input formats for LSB-first (SAIFB = 1)
To make the STA381BWS work properly, the serial audio interface LRCKI clock must be
synchronous to the PLL output clock which means that:
●
●
If these two conditions are not met, and the IDE bit (reg 0x05 bit 2) is set to 1, the
STA381BWS will immediately mute the I
and it will freeze any active processing task.
To avoid any audio side effects (like pop noise), it is strongly recommended to soft-mute any
audio streams flowing into the STA381BWS data path before the desynchronization event
the frequency of PLL clock / frequency of LRCKI = N ±4 cycles, where N depends on
the settings in
the PLL must be locked.
32 * fs
48 * fs
64 * fs
BICKI
Table 30 on page 58
SAI [3:0]
1100
1110
0100
0100
1000
1100
0001
0101
1001
1101
0010
0110
1010
1110
0000
0100
1000
1100
0001
0101
1001
1101
0010
0110
1010
1110
Doc ID 018937 Rev 6
SAIFB
2
S PCM data out (provided to the processing block)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
I
Left/right-justified 16-bit data
I
I
I
LSB first I
Left-justified 24-bit data
Left-justified 20-bit data
Left-justified 18-bit data
Left-justified 16-bit data
Right-justified 24-bit data
Right-justified 20-bit data
Right-justified 18-bit data
Right-justified 16-bit data
I
I
I
LSB first I
Left-justified 24-bit data
Left-justified 20-bit data
Left-justified 18-bit data
Left-justified 16-bit data
Right-justified 24-bit data
Right-justified 20-bit data
Right-justified 18-bit data
Right-justified 16-bit data
2
2
2
2
2
2
2
S 15-bit data
S 23-bit data
S 20-bit data
S 18-bit data
S 24-bit data
S 20-bit data
S 18-bit data
2
2
S 16-bit data
S 16-bit data
Interface format
STA381BWS