전자부품 데이터시트 검색엔진
  Korean  ▼
ALLDATASHEET.CO.KR

X  

Preview PDF HTML

LF2272 데이터시트(PDF) 2 Page - LOGIC Devices Incorporated

부품명 LF2272
상세설명  Colorspace Converter/Corrector (3 x 12-bits)
PDF  9 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
제조업체  LODEV [LOGIC Devices Incorporated]
홈페이지  http://www.logicdevices.com
Logo LODEV - LOGIC Devices Incorporated

LF2272 데이터시트(HTML) 2 Page - LOGIC Devices Incorporated

  LF2272 Datasheet HTML 1Page - LOGIC Devices Incorporated LF2272 Datasheet HTML 2Page - LOGIC Devices Incorporated LF2272 Datasheet HTML 3Page - LOGIC Devices Incorporated LF2272 Datasheet HTML 4Page - LOGIC Devices Incorporated LF2272 Datasheet HTML 5Page - LOGIC Devices Incorporated LF2272 Datasheet HTML 6Page - LOGIC Devices Incorporated LF2272 Datasheet HTML 7Page - LOGIC Devices Incorporated LF2272 Datasheet HTML 8Page - LOGIC Devices Incorporated LF2272 Datasheet HTML 9Page - LOGIC Devices Incorporated  
Zoom Inzoom in Zoom Outzoom out
 2 / 9 page
background image
DEVICES INCORPORATED
LF2272
Colorspace Converter/
Corrector (3 x 12-bits)
Video Imaging Products
08/16/2000–LDS.2272-I
2
SYSTEMS SMALLER THAN 12-BITS
Using a data path less than 12-bits
requires the input data to be right
justified and sign extended to 12-bits
because the LF2272 carries out all
calculations to full precision. Since all
least-significant bits are used, the
desired X, Y, and Z outputs are
rounded correctly and upper-order
output bits are used for overflow.
products will be output five clock
cycles after the input data has been
registered. New output data is
subsequently available every clock
cycle thereafter.
DATA FORMATTING
The data input ports (A, B, C) and
data output ports (X, Y, Z) are 12-bit
integer two’s complement format.
The coefficient input ports (KA, KB,
KC) are 10-bit fractional two’s
complement format. Refer to
Figures 1a and 1b.
BIT WEIGHTING
The internal sum of products of the
LF2272 can grow to 23 bits. However,
in order to keep the output format
identical to the input format, the X, Y,
and Z outputs are rounded to 12-bit
integer words. The rounding is done
only at the final output stage to allow
accuracy, with correct rounding and
overflow, for applications requiring
less than 12-bit integer words. The
user may adjust the bit weighting by
applying an identical scaling correc-
tion factor to both the input and
output data streams.
X(n+4)
= A(n)KA1(n)
+ B(n)KB1(n)
+
C(n)KC1(n)
Y(n+4)
= A(n)KA2(n)
+ B(n)KB2(n)
+
C(n)KC2(n)
Z(n+4)
= A(n)KA3(n)
+ B(n)KB3(n)
+
C(n)KC3(n)
TABLE 1.
LATENCY EQUATIONS
FIGURE 1A.INPUT FORMATS
Data Input
Coefficient Input
98
7
4
3
2
65
10
–2
0 2–1 2–2
2
–5 2–6 2–7
2
–3 2–4
2
–8 2–9
(Sign)
11 10 9
6
5
4
87
3210
–2
11 210 29
2
6
2
5
2
4
2
8
2
7
2
3
2
2
2
1
2
0
(Sign)
Internal Sum
20 19 18
3
2
1
17
0
–2
11 210 29
2
–6 2–7 2–8
2
8
2
–9
(Sign)
DATA OVERFLOW
Because the LF2272’s matched input
and output data formats accommo-
date unity gain (0 dB), input condi-
tions that could lead to numeric
overflow may exist. To ensure that no
overflow conditions occur, the user
must be aware of the maximum input
data and coefficient word sizes
allowable for each specific algorithm
being performed.
FIGURE 1B.OUTPUT FORMAT
Result
11 10 9
6
5
4
87
3210
–2
11 210 29
2
6
2
5
2
4
2
8
2
7
2
3
2
2
2
1
2
0
(Sign)



Html Pages

1 2 3 4 5 6 7 8 9


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