PDSP16488AMA datasheet(14/30 Pages) MITEL

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PDSP16488A MA

FUNCTION

X15:0 Not delayed

X15:0 Delayed

Internal sum not shifted

Internal sum multiplied by 256

I/P to line stores not delayed

I/P to line stores delayed by 4

I/P to line stores delayed by 8

I/P to line stores delayed by 12

Un-signed pixel data input

2's complement pixel data input

Add 0 to 7 clock delays to DELOP

output.

CODE

XXX

BIT

3:2

7:5

BIT 0

If this bit is set the expansion data input is delayed

by four pixel clocks before it is added to the present

convolver

output. It is used in multiple device

systems when the partial window width is 8 pixels.

BIT 1

When this bit is set the internal sum is shifted to the

left by 8 places before being added to the expan-

sion input. It is used when two devices are used,

each in an 8 bit pixel mode, to fabricate a 16 bit

pixel mode.

BITS 3::2 These bits define the delays on both sets of pixel

inputs before entering the line stores. The delays

are always identical on both sets.

BIT 4

When this bit is set the convolver interprets 8 or 16

bit pixels as 2's complement signed numbers

BIT 7:5

These bits add 0 to 7 additional clock delays to

those selected by Register C, bits 3:1.

ABSOLUTE MAXIMUM RATINGS [See Notes]

Supply voltage Vcc

-0.5V to 7.0V

Input voltage V

-0.5V to Vcc + 0.5V

Output voltage V

OUT

-0.5V to Vcc + 0.5V

Clamp diode current per pin I

K (see note 2)

18mA

Static discharge voltage (HMB)

500V

Storage temperature T

-65

°C to 150°C

Max. junction temperature Military

150

°C

Package power dissipation

3000mW

Thermal resistances, junction to case ø

°C/W

NOTES ON MAXIMUM RATINGS

1. Exceeding these ratings may cause permanent damage.

Functional operation under these conditions is not implied.

2. Maximum dissipation or 1 second should not be exceeded,

only one output to be tested at any one time.

3. Exposure to absolute maximum ratings for extended

periods may affect device reliablity.

4. Current is defined as negative into the device.

Characteristic

Output high voltage

Output low voltage

Input high voltage

Input low voltage

Input leakage current

Input capacitance

Output leakage current

Output S/C current

STATIC ELECTRICAL CHARACTERISTICS

Operating Conditions (unless otherwise stated)

amb =-55°C

to +125

°C. V

cc = 5.0v ± 10%

NOTE: Signal pins

PC0, X15, MASTER, SINGLE, BYPASS and 0V have pull-up resistors in the range 15k

Ω to 200kΩ.

Signal pins

PROG and DS require external pull-up resistors in EPROM mode.

Conditions

OH = 4mA

OL = -4mA

Except CLK,

RES = 4V

GND < V

IN < VCC.No internal pull up

GND < V

OUT < VCC.No internal pull up

CC = Max

Min.

2.4

2.0

-10

-50

Value

Typ.

Symbol

Max.

0.4

0.8

+10

+50

300

Units

µA

Subgroup

1,2,3

†

Delay from output

high to output

high impedance

Test

Waveform - measurement level

Delay from output

low to output

high impedance

0.5V

1.5V

0.5V

1.5V

0.5V

Delay from output

high impedance to

output low

Delay from output

high impedance to

output high

- Voltage reached when output driven high

- Voltage reached when output driven low

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