PDSP16488A MA
BIT 0
BIT 1
If this bit is set the expansion data input is delayed
by fourpixelclocksbeforeitisaddedtothepresent
convolver output. It is used in multiple device
systems when the partial window width is 8 pixels.
REGISTER D Bit Allocation
CODE
FUNCTION
BIT
0
0
X15:0 Not delayed
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.
1
X15:0 Delayed
0
0
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.
1
1
1
00
01
10
11
0
3:2
3:2
3:2
3:2
4
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
4
1
XXX
7:5
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]
Waveform - measurement level
Test
Supply voltage Vcc
Input voltage VIN
Output voltage VOUT
-0.5V to 7.0V
-0.5V to Vcc + 0.5V
-0.5V to Vcc + 0.5V
V H
Delay from output
high to output
high impedance
0.5V
Clamp diode current per pin IK (see note 2)
Static discharge voltage (HMB)
Storage temperature TS
Max. junction temperature Military
Package power dissipation
18mA
500V
-65°C to 150°C
Delay from output
low to output
high impedance
150°C
3000mW
5°C/W
0.5V
0.5V
V L
Thermal resistances, junction to case øJC
Delay from output
high impedance to
output low
1.5V
NOTES ON MAXIMUM RATINGS
Delay from output
high impedance to
output high
1. Exceeding these ratings may cause permanent damage.
Functional operation under these conditions is not implied.
2.Maximumdissipationor1secondshouldnotbeexceeded,
only one output to be tested at any one time.
3. Exposure to absolute maximum ratings for extended
periods may affect device reliablity.
0.5V
1.5V
VH - Voltage reached when output driven high
VL - Voltage reached when output driven low
4. Current is defined as negative into the device.
STATIC ELECTRICAL CHARACTERISTICS
Operating Conditions (unless otherwise stated)
Tamb =-55°C to +125°C. Vcc = 5.0v 10%
NOTE: Signal pins PC0, X15, MASTER, SINGLE, BYPASS and 0V have pull-up resistors in the range 15kΩ to 200kΩ.
Signal pins PROG and DS require external pull-up resistors in EPROM mode.
Symbol
Subgroup
Units
Conditions
Characteristic
Value
Typ.
Max.
Min.
VOH
VOL
VIH
VIL
IIN
CIN
IOZ
ISC
1,2,3
1,2,3
1,2,3
1,2,3
1,2,3
V
V
V
IOH = 4mA
IOL = -4mA
Except CLK, RES = 4V
-
2.4
-
2.0
-
Output high voltage
Output low voltage
Input high voltage
Input low voltage
Input leakage current
Input capacitance
Output leakage current
Output S/C current
*
*
*
*
*
†
*
0.4
-
0.8
+10
V
µA
pF
µA
mA
GND < VIN < VCC.No internal pull up
-10
10
1,2,3
GND < VOUT < VCC.No internal pull up
VCC = Max
+50
300
-50
10
†
14
MITEL [ MITEL NETWORKS CORPORATION ]
