전자부품 데이터시트 검색엔진
  Korean  ▼
ALLDATASHEET.CO.KR

X  

Preview PDF HTML

STA381BWS 데이터시트(PDF) 154 Page - STMicroelectronics

부품명 STA381BWS
상세설명  Sound Terminal® 2.1-channel high-efficiency digital audio system
PDF  171 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

STA381BWS 데이터시트(HTML) 154 Page - STMicroelectronics

Back Button STA381BWS Datasheet HTML 150Page - STMicroelectronics STA381BWS Datasheet HTML 151Page - STMicroelectronics STA381BWS Datasheet HTML 152Page - STMicroelectronics STA381BWS Datasheet HTML 153Page - STMicroelectronics STA381BWS Datasheet HTML 154Page - STMicroelectronics STA381BWS Datasheet HTML 155Page - STMicroelectronics STA381BWS Datasheet HTML 156Page - STMicroelectronics STA381BWS Datasheet HTML 157Page - STMicroelectronics STA381BWS Datasheet HTML 158Page - STMicroelectronics Next Button
Zoom Inzoom in Zoom Outzoom out
 154 / 171 page
background image
Register description: Sound Terminal compatibility
STA381BWS
154/171
Doc ID 018937 Rev 6
7.23
Bad PWM detection registers (address 0x4D, 0x4E, 0x4F)
The STA381BWS implements a detection on the PWM outputs able to verify if the output
signal has no zero-crossing in a configurable time window. This check can be useful to
detect DC levels in the PWM outputs. To be noted that the checks are performed on logic
level PWM (i.e. not the power bridge ones, nor the PWM on DDX3 and DDX4 I/Os).
In case of ternary modulation, the detection threshold is computed as:
TH=[(BPTH*2+1)/128]*100%
If the measured PWM duty cycle is detected greater than or equal to TH for more than
BPTIM PWM periods, the corresponding PWM bit will be set in register 0x4E.
In case of binary modulation, there are two thresholds:
TH1=[(64+BPTH)/128]*100%
TH2=[(64-BPTH)/128]*100%
In this case if the measured PWM duty cycle is outside the TH1-TH2 range for more than
BPTIM PWM periods, the corresponding bit will be set in register 0x4E.
D7
D6
D5
D4
D3
D2
D1
D0
BPTH[5]
BPTH[4]
BPTH[3]
BPTH[2]
BPTH[1]
BPTH[0]
reserved
reserved
00
11
00
1
0
D7
D6
D5
D4
D3
D2
D1
D0
BP4B
BP4A
BP3B
BP3A
BP2B
BP2A
BP1B
BP1A
00
00
00
0
0
D7
D6
D5
D4
D3
D2
D1
D0
BPTIM[7]
BPTIM[6]
BPTIM[5]
BPTIM[4]
BPTIM[3]
BPTIM[2]
BPTIM[1]
BPTIM[0]
01
01
11
1
0



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 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100  ...More


데이터시트 다운로드

Go To PDF Page


링크 URL



ALLDATASHEET 가 귀하에 도움이 되셨나요?  [ DONATE ] 

Alldatasheet는?   |   광고문의   |   운영자에게 연락하기   |   개인정보취급방침   |   링크 투 데이터시트    |   링크교환   |   제조사별 검색
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com