PDSP16488AAC datasheet, PDF - EEWORLD Datasheet

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PDSP16488AAC: DescriptionSingle Chip 2D Convolver with Integral Line Delays; File Size335KB，33 Pages; ManufacturerZarlink Semiconductor (Microsemi); Websitehttp://www.zarlink.com/

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PDSP16488AAC Overview

Single Chip 2D Convolver with Integral Line Delays

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PDSP16488A

Single Chip 2D Convolver with Integral Line Delays

Advance Information

DS3713

ISSUE 6.4

December 1997

The PDSP16488A is a fully integrated, application specific,

image processing device. It performs a two dimensional convo-

lution between the pixels within a video window and a set of

stored coefficients. An internal multiplier accumulator array can

be multi-cycled at double or quadruple the pixel clock rate. This

then gives the window size options listed in Table 1.

An internal 32kbit RAM can be configured to provide either

four or eight line delays. The length of each delay can be

programmed to the users requirement, up to a maximum of 1024

pixels per line. The line delays are arranged in two groups,which

may be internally connected in series or may be configured to

accept separate pixel inputs. This allows interlaced video or

frame to frame operations to be supported.

The 8-bit coefficients are also stored internally and can be

downloaded from a host computer or from an EPROM. No

additional logic is required to support the EPROM and a single

device can support up to 16 convolvers.

The PDSP16488A contains an expansion adder and delay

network which allows several devices to be cascaded. Con-

volvers with larger windows can then be fabricated as shown in

Table 2.

Intermediate 32-bit precision is provided to avoid any danger

of overflow, but the final result will not normally occupy all bits.

The PDSP16488A thus provides a gain control block in the

output path, which allows the user to align the result to the most

significant end of the 32-bit word.

COMPOSITE

DATA

PIXEL

CLOCK

GEN

SYNC

ODD FIELD

POWER

EPROM

ADDR DATA RESET

CLK

HRES

BYPASS

RES

DELOP

SYNC

EXTRACT

DELAYED

SYNC

PDSP16488A

ADC

OPTIONAL

FIELD

DELAY

L7:0

D15:0

OUTPUT

DATA

IP7:0

Fig. 1 Typical stand-alone real time system

Pixel Window size

size Width Depth

Maximum pixel

rate (MHz)

Line delays

431024

83512

43512

FEATURES

The PDSP16488A is a replacement for the

PDSP16488 (see Note below)

8 or 16-bit Pixels with rates up to 40 MHz

Window Sizes up to 838 with a Single Device

Eight Internal Line Delays

Supports Interlace and Frame-to-Frame Operations

Coefficients Supplied from an EPROM or Remote Host

Expandable in both X and Y for Larger Windows

Gain Control and Pixel Output Manipulation

84-pin PGA or 132-pin QFP Package Options

Note:

PDSP16488A devices are not guaranteed to cascade with

PDSP16488 devices. Zarlink Semiconductor do not recommend

that PDSP16488A be mixed with PDSP16488 devices in a single

equipment design. The PDSP16488A requires external pullup

resistors in EPROM Mode (see Static Electrical Characteristics).

Table 1 Single PDSP16488A configurations

Max.

No. of PDSP16488As for N3N window size

pixel Pixel

rate size

3 5

5 7

7 9

9 11311 15315 23323

(MHz)

ORDERING INFORMATION

Commercial (0

C to

170

PDSP16488A / C0 / AC (PGA)

Industrial (240

C to

185

PDSP16488A / B0 / AC (PGA)

PDSP16488A / B0 / GC (QFP)

Military (255

C to

1125

PDSP16488A / A0 / AC (PGA)

PDSP16488A / A0 / GC (QFP)

PDSP16488A / MA / ACBR (PGA) MIL-STD-883 Class B*

PDSP16488A / MA / GCPR (QFP) MIL-STD-883 Class B*

See Notes following Static Electrical CharacteristicsTable

*Maximum rate is limited to 30MHz by line store expansion delays

Table 2 PDSP16488As needed to implement typical window sizes

PDSP16488AAC Related Products

	PDSP16488AAC	PDSP16488AB0	PDSP16488AC0	PDSP16488AMA	PDSP16488AGCPR	PDSP16488AGC	PDSP16488AACBR
Description	Single Chip 2D Convolver with Integral Line Delays	Single Chip 2D Convolver with Integral Line Delays	Single Chip 2D Convolver with Integral Line Delays	Single Chip 2D Convolver with Integral Line Delays	Single Chip 2D Convolver with Integral Line Delays	Single Chip 2D Convolver with Integral Line Delays	Single Chip 2D Convolver with Integral Line Delays

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