參數(shù)資料
型號(hào)： TMC2330AH5C
廠商： RAYTHEON SEMICONDUCTOR
元件分類： 數(shù)字信號(hào)處理外設(shè)
英文描述： Coordinate Transformer 16 x 16 Bit, 40 MOPS
中文描述： 32-BIT, DSP-COORDINATE TRANSFORM PROCESSOR, PPGA121
文件頁數(shù)： 11/18頁
文件大小： 164K
代理商： TMC2330AH5C
TMC2330A
PRODUCT SPECIFICATION
REV. 1.1.8 10/31/00
11
Table 3a. X-Dimensional Marginal Over
fl
ows
In all cases, RTP=0 (Polar-To-Rectangular mode) and
XRIN=8000 (incoming radius=32768).
Table 3b. Maximal Over
fl
ow (Radius In=65535)
In all cases, RTP=0 (Polar-To-Rectangular mode) and
XRIN=7FFF (incoming radius=65535, which will always
overflow).
Numeric Under
fl
ow
In RTP=1 (Rectangular-To-Polar) mode, if XRIN=YPIN=0, the
angle is undefined. Under these conditions, the TMC2330A
will output the expected radius of 0 (RXOUT= 0000) and an
angle of 1.744 radians (PYOUT=4707). This angle is an artifact
of the CORDIC algorithm and is not flagged as an error,
since the angle of any 0 length vector is arbitrary.
Performing Scan Conversion with
the TMC2330A
Medical Imaging Systems such as Ultrasound, MRI, and
PET, and phased array Radar and Sonar systems generate
radial-format coordinates (range or distance, and bearing)
which must be converted into raster-scan format for further
processing and display. Utilizing the TMC2302A Image
Resampling Sequencer, a minimum chipcount Scan Con-
verter can be implemented which utilizes the trigonometric
translation performed by the TMC2330A to backwards-map
from a Cartesian coordinate set into the Polar source image
buffer address space.
As shown in Figure 2, the TMC2330A transforms the Carte-
sian source image addresses from the TMC2302A directly to
vector distance and angle coordinates, while the TMC2302A
writes the resulting resampled pixel values into the target
memory in raster fashion. Note that the ability to perform
this spatial transformation in either direction gives the user
the freedom to process images in either coordinate space,
with little restriction. Image manipulation such as zooms or
tilts can easily be included in the transformation by program-
ming the desired image manipulation into the TMC2302A’s
transformation parameter registers.
TC
0
0
1
1
YPIN
0000 = 0
8000 =
π
0000 = 0
8000 =
π
OV
1
1
1
0
RXOUT
0000 = +0
8000 = -0
8000 = -32768
8000 = -32768
CORRECT X
+32768
-32768
+32768
-32768
TC
0
0
1
1
YPIN
0000 = 0
8000 =
π
0000 = 0
8000 =
π
OV
1
1
1
1
RXOUT
7FFF = +32767
FFFF = -32767
FFFF = -1
0001 = +1
CORRECT X
+65535
-65535
+65535
-65535
Figure 1. First Quadrant Coordinate Relationships
65535
32767
C
B
A
R
θ
X
32767
65535
Y
π
/2
X = R (Cos
θ
)
Y = R (Sin
θ
)
and
R = X2 + Y2
θ
= Tan-1 (Y/X)
If R
≤
32767, overflow will not occur (Region A).
If R > 32767, overflow will not occur (Region B) if |X|
≤
32767 and |Y|
≤
32767.
If R > 32767, overflow will occur (Region C) if |X|
≥
32768 or |Y|
≥
32768.
相關(guān)PDF資料
PDF描述
TMC2330AH5C1 Coordinate Transformer 16 x 16 Bit, 40 MOPS
TMC2330A Coordinate Transformer 16 x 16 Bit, 40 MOPS
TMC2330AG1C Coordinate Transformer 16 x 16 Bit, 40 MOPS
TMC2330AG1C1 Coordinate Transformer 16 x 16 Bit, 40 MOPS
TMC2330AH6C JT 7C 7#20 SKT PLUG
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TMC2330AH5C1 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Coordinate Transformer 16 x 16 Bit, 40 MOPS
TMC2330AH6C 功能描述:視頻 IC Coord. Transformer RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel
TMC2330AH6C1 功能描述:視頻 IC Coord. Transformer RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel
TMC2330AKEC 功能描述:視頻 IC Coord. Transformer RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel
TMC2330AKEC1 功能描述:視頻 IC Coord. Transformer RoHS:否 制造商:Fairchild Semiconductor 工作電源電壓:5 V 電源電流:80 mA 最大工作溫度:+ 85 C 封裝 / 箱體:TSSOP-28 封裝:Reel
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