PDSP16488AMA Datasheet, PDF (14/30 Pages) Mitel Networks Corporation – Single Chip 2D Convolver with Integral Line Delays

PDSP16488A MA
REGISTER D Bit Allocation
BIT CODE
0
0
0
1
1
0
1
1
3:2
00
3:2
01
3:2
10
3:2
11
4
0
4
1
7:5
XXX
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.
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_IN
-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_S
Max. junction temperature Military
-65°C to 150°C
150°C
Package power dissipation
3000mW
Thermal resistances, junction to case ø_JC
5°C/W
Test
Waveform - measurement level
Delay from output
V_H
high to output
high impedance
0.5V
Delay from output
low to output
high impedance
V_L
0.5V
Delay from output
high impedance to
output low
1.5V
0.5V
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.
Delay from output
high impedance to
output high
1.5V
0.5V
VH - Voltage reached when output driven high
VL - Voltage reached when output driven low
STATIC ELECTRICAL CHARACTERISTICS
Operating Conditions (unless otherwise stated)
T_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 15kΩ to 200kΩ.
Signal pins PROG and DS require external pull-up resistors in EPROM mode.
Characteristic
Symbol
Value
Units Subgroup Conditions
Min. Typ. Max.
* Output high voltage
V
OH
* Output low voltage
V
OL
* Input high voltage
V
IH
* Input low voltage
V
IL
* Input leakage current
I_IN
† Input capacitance
C
IN
* Output leakage current
I_OZ
† Output S/C current
I
SC
2.4
-
2.0
-
-10
10
-50
10
-
V
0.4
V
-
V
0.8
V
+10 µA
pF
+50 µA
300 mA
1,2,3
1,2,3
1,2,3
1,2,3
1,2,3
1,2,3
I_OH = 4mA
I_OL = -4mA
Except CLK, RES = 4V
GND < V_IN < V_CC.No internal pull up
GND < V_OUT < V_CC.No internal pull up
V_CC = Max
14