TMC2246AKEC2 Fairchild Semiconductor, TMC2246AKEC2 Datasheet

TMC2246AKEC2

Manufacturer Part Number

TMC2246AKEC2

Description

Video ICs Image Filter

Manufacturer

Fairchild Semiconductor

Type

Digital Half Band Filtersr

Datasheet

1.TMC2246AKEC2.pdf (18 pages)

Specifications of TMC2246AKEC2

Operating Supply Voltage

- 0.5 V to + 7 V

Supply Current

170 mA

Maximum Operating Temperature

70 C

Package / Case

MQFP-120

Minimum Operating Temperature

0 C

Mounting Style

SMD/SMT

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

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Features

• 60 MHz computation rate

• 60 MHz data and coefﬁcient input

• Four 11 x 10-bit multipliers

• Individual data and coefﬁcient inputs

• 25-Bit accumulator

• Fractional and integer two’s complement data formats

• Input and output data latches with user-conﬁgurable

• Selectable 16-bit rounded output

• Internal 1/2 LSB rounding

• Available in 120-pin CPGA, PPGA, MPGA, or MQFP

Description

The TMC2246A is a video-speed convolutional array com-

posed of four 11 x 10 bit registered multipliers followed by a

summer and an accumulator. All eight multiplier inputs are

accessible to the user and may be updated every clock cycle

with integer or fractional two’s complement data. A pipe-

lined architecture, fully registered input and output ports,

and asynchronous three-state output enable control simplify

the design of complex systems.

TMC2246A

Image Filter

11 x 10 bit, 60 MHz

Logic Symbol

enables

10-0

9-0

TMC2246A

Image Filter

ENB1-4

ENSEL

ACC

FSEL

OCEN

OEN

CLK

15-0

Applications

• Fast pixel interpolation

• Fast image manipulation

• Image mixing and keying

• High-performance FIR ﬁlters

• Adaptive digital ﬁlters

• One- and two-dimensional image processing

The data or coefﬁcient inputs to the multipliers may be held

over multiple clock cycles, providing storage for mixing and

ﬁltering coefﬁcients. The 25-bit internal accumulator path

allows two bits of cumulative word growth and may be inter-

nally rounded to 16 bits. Output data are updated every clock

cycle, or may be held under user control. All data inputs, out-

puts, and controls are TTL compatible and (except for the

three-state output enable) are registered on the rising edge of

CLK.

The TMC2246A is uniquely suited to performing pixel inter-

polation in image manipulation and ﬁltering applications. As

a companion to the Fairchild Semiconductor TMC2301 and

TMC2302 Image Manipulation Sequencers, the TMC2246A

can execute a bilinear interpolation of an image (4-pixel ker-

nels) at real-time video rates. Larger kernels or other, more

complex, functions can be realized with no loss in performance

by utilizing multiple devices.

With unrestricted access to all data and coefﬁcient input

ports, the TMC2246A offers considerable ﬂexibility in appli-

cations performing digital ﬁltering, adaptive FIR ﬁlters, mix-

ers, and other similar systems requiring high-speed

processing.

Fabricated in a submicron CMOS process, the TMC2246A

operates at a guaranteed clock rate of 60 MHz over the full

temperature and supply voltage ranges. It is pin- and func-

tion-compatible with Fairchild’s TMC2246, while providing

higher speed operation and lower power dissipation. It is

available in a 120 pin Plastic Pin Grid Array (PPGA), 120

pin Ceramic Pin Grid Array (CPGA), 120 lead MQFP to

PPGA (MPGA), and a 120 lead Metric Quad FlatPack

(MQFP).

www.fairchildsemi.com

REV. 1.0.3 9/11/00

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TMC2246AKEC2 Summary of contents

Page 1

... CLK. The TMC2246A is uniquely suited to performing pixel inter- polation in image manipulation and ﬁltering applications companion to the Fairchild Semiconductor TMC2301 and TMC2302 Image Manipulation Sequencers, the TMC2246A can execute a bilinear interpolation of an image (4-pixel ker- nels) at real-time video rates. Larger kernels or other, more ...

Page 2

PRODUCT SPECIFICATION Block Diagram D1 9-0 C1 10-0 ENSEL ACC FSEL OCEN CLK OEN Functional Description The TMC2246A Image Filter is a ﬂexible multiplier-summer array which computes the accumulated sum of four 11x10 bit products, allowing word growth up to ...

Page 3

TMC2246A Pin Assignments 120 Pin Plastic Pin Grid Array, H5 Package, 120 Pin Ceramic Pin Grid Array, G1 Package, and 120 Pin Metric Quad FlatPack to 120 Pin Plastic Pin Array, H6 Package ...

Page 4

PRODUCT SPECIFICATION Pin Assignments 120 Lead Metric Quad Flat Pack (KE) Package 120 1 4 Pin Name Pin Name Pin Name Pin 1 CLK FSEL ...

Page 5

TMC2246A Pin Descriptions Pin Number Pin Name CPGA/PPGA/ MPGA Power V F3, H3, L7, C8 12, 20, 46, 102 Supply Voltage. The TMC2246A operates from a single +5V DD GND E3, G3, J3, L6, 8, 16, 24, 42, H11, C7 ...

Page 6

PRODUCT SPECIFICATION Pin Descriptions (continued) Pin Number Pin Name CPGA/PPGA/ MPGA Controls FSEL B2 ENSEL A1 ENB1– C4, A2, A3, B3 118, 117, 116, ENB4 ACC B1 OCEN D3 OEN C2 No Connect NC D4 (Index Pin) Note ...

Page 7

TMC2246A Table 1. Input Register Control ENB1-4 ENSEL Input Register Held 1 1 Data Coefﬁcient Data Formats Fractional Two’s Complement Format (FSEL = LOW ...

Page 8

PRODUCT SPECIFICATION OEN Three-State Outputs Figure 4. Threshold Levels for Three-State Measurement Absolute Maximum Ratings Parameter Supply Voltage Input Voltage 2 Output, Applied Voltage 3,4 Output, Externally Forced Current Output, Short Circuit Duration (single output in HIGH state to ground) ...

Page 9

TMC2246A Electrical Characteristics Parameter I Total Power Supply Current DD I Power Supply Current, DDU Unloaded I Power Supply Current, DDQ Quiescent C I/O Pin Capacitance PIN I Input Current, HIGH IH I Input Current, LOW IL I Hi-Z Output ...

Page 10

PRODUCT SPECIFICATION Timing Diagram CLK D1-4 DA 9-0 CA C1-4 10-0 1 CONTROLS 2 S 15-0 Notes: 1. Except OEN. 2. Assumes OEN = LOW. Application Notes Typical Operation The versatile input clock enables and unrestricted data ...

Page 11

TMC2246A Table 2. Typical TMC2246A Operation Sequence CLK D1 C1 ENB1 D2 C2 ENB2 D1(1) C1(1) 1 D2(1) C2(1) 2 D1( D2(2) C2(2) 3 D1(3) C1(3) 0 D2(3) C2(3) 4 D1(4) ...

Page 12

PRODUCT SPECIFICATION “X” TMC2302A SADR 7-4 SADR 23-8 TADR 11-0 +1 ADDR ADDR Banded Source X,Y X+1,Y Image RAM DOUT DOUT TMC2246A Target Image RAM To Display Figure 5. Bilinear Interpolation Using the TMC2246A TMC2246A Applications ...

Page 13

TMC2246A Data Coefficients Select TMC2246A Figure 6. Using the TMC2246A For FIR Filtering Related Products • TMC2301 Image Resampling Sequencer • TMC2302A Image Manipulation Sequencer • TMC2249A Video Mixer • TMC2242B Half-Band Filter REV. 1.0.3 9/11/ TMC2246A S ...

Page 14

PRODUCT SPECIFICATION Mechanical Dimensions 120-Lead CPGA Package Inches Millimeters Symbol Min. Max. Min. A .080 .160 2.03 A1 .040 .060 1.01 A2 .125 .215 3.17 øB .016 .020 0.40 øB2 .050 NOM. 1.27 NOM. D 1.340 1.380 33.27 D1 1.200 ...

Page 15

TMC2246A Mechanical Dimensions 120-Lead PPGA Package Inches Millimeters Symbol Min. Max. Min. A .080 .160 2.03 A1 .040 .060 1.01 A2 .125 3.17 .215 øB .016 .020 0.40 øB2 .050 NOM. 1.27 NOM. D 1.340 1.380 33.27 D1 1.200 BSC ...

Page 16

PRODUCT SPECIFICATION Mechanical Dimensions 120-Lead Metric Quad Flat Package to Pin Grid Array Package (MPGA) Inches Millimeters Symbol Min. Max. Min. A .309 .311 7.85 A1 .145 .155 3.68 A2 .080 .090 2.03 A3 .050 TYP. 1.27 TYP. øB .016 ...

Page 17

TMC2246A Mechanical Dimensions 120-Lead MQFP Package Inches Millimeters Symbol Min. Max. Min. A — .154 — A1 .010 — .25 A2 .125 .144 3.17 B .012 .018 .30 .009 C .005 .13 D/E 1.219 1.238 30.95 D1/E1 1.098 1.106 27.90 ...

Page 18

... TMC2246AKEC 0°C to 70°C TMC2246AKEC1 0°C to 70°C TMC2246AKEC2 0°C to 70°C DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN; ...

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