STA335BWS datasheet(26/68 Pages) STMICROELECTRONICS

26 / 68 page

STA335BWS

26/68

6.1.2

Interpolation ratio select

The STA335BWS has variable interpolation (oversampling) settings such that internal

processing and DDX output rates remain consistent. The first processing block interpolates

by either 2 times or 1 time (pass-through) or provides a 2 times downsample. The

oversampling ratio of this interpolation is determined by the IR bits.

6.1.3

Thermal warning recovery bypass

If the thermal warning adjustment is enabled (TWAB = 0), then the thermal warning

recovery determines if the -3 dB output limit is removed when thermal warning is negative.

If TWRB = 0 and TWAB = 0, then when a thermal warning disappears the -3 dB output limit

is removed and the gain is added back to the system. If TWRB = 1 and TWAB = 0, then

when a thermal warning disappears the -3 dB output limit remains until TWRB is changed to

zero or the device is reset.

Bit

R/W

RST

Name

Description

4:3

R/W

IR[1:0)

Selects internal interpolation ratio based on input I2S

sample frequency

Table 11.

IR bit settings as a function of input sample rate

Input sample rate Fs (kHz)

1st stage interpolation ratio

2 times oversampling

44.1

2 times oversampling

88.2

Pass-through

176.4

2 times downsampling

192

2 times downsampling

Bit

R/W

RST

Name

Description

5R/W

TWRB

0: Thermal warning recovery enabled

1: Thermal warning recovery disabled

STA335BWS 데이터시트(PDF) 26 Page - STMicroelectronics

STA335BWS 데이터시트(HTML) 26 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68

데이터시트 다운로드

링크 URL