PDSP16540 Zarlink Semiconductor, PDSP16540 Datasheet - Page 8

• Manufacturer Part Number: PDSP16540
• Description: 32K BUCKET BUFFER
• Manufacturer: Zarlink Semiconductor

PDSP16540
a particular application, and is usually subject to some com-
promise. If the above maximum writing rates are marginally
not adequate, the amount of overlap can possibly be reduced
to achieve the required performance. Mode control inputs
MD2:1 should then all be tied high, and outputs D9:5 used as
inputs during reset to define the number of new words to be
written.
SUPPORTING REAL ONLY TRANSFORMS
PDSP16510 when two concurrent 1024 point real transa-
forms are to be performed. It does not suppoprt block overlap-
ping in this mode.
ABSOLUTE MAXIMUM RATINGS [See Notes]
Supply voltage Vcc
Input voltage V
Output voltage V
Clamp diode current per pin I
Static discharge voltage (HMB)
Storage temperature T
Ambient temperature with power applied T
Junction temperature
Package power dissipation
Thermal resistances
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 positive into the device.
STATIC ELECTRICAL CHARACTERISTICS
6
Operating Conditions (unless otherwise state)
The amount of overlapping is dependent on the needs of
If MD5 is tied high the PDSP16540 will support the
Junction to case ø
Tamb = 0 C to +70 C.
Vcc = 5.0v
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
IN
OUT
10%
S
JC
K
(see note 2)
Symbol
-0.5V to Vcc + 0.5V
-0.5V to Vcc + 0.5V
V
V
V
C
V
I
I
AMB
I
OZ
SC
IN
OH
OL
IH
IN
IL
-65 C to 150 C
-0.5V to 7.0V
0 C to 70 C
3000mW
Min.
-10
-50
2.4
2.8
10
5 C/W
150 C
18mA
-
-
500V
Value
Typ.
10
inputs, and the IP31:16 inputs are redundant. Two blocks of
data are acquired before DAV goes active, and both blocks are
then read in parallel using all thirty two outputs.
1024 words which totally consist of new data. The RMF flag is
not needed by the PDSP16510, but will actually go active after
the defined number of words in the second block have been
loaded. Control Register Bits 8:6 in the PDSP16510 must be
set to 101 in order to expect data on both its real and imaginary
inputs.
Max.
Real only data is written to the buffer using the IP15:0
MD0,1, and 2 must be tied low in order to define blocks of
+10
+50
300
0.4
0.8
Delay from output
high to output
high impedance
Delay from output
low to output
high impedance
Delay from output
high impedance to
output low
Delay from output
high impedance to
output high
V
V
-
H
L
- Voltage reached when output driven high
- Voltage reached when output driven low
Test
Units
mA
pF
V
V
V
V
A
A
1.5V
1.5V
V
V
Waveform - measurement level
H
L
Conditions
I
I
GND < V
GND < V
V
OH
OL
CC
= -4mA
= 4mA
= Max
IN
OUT
< V
< V
CC
0.5V
0.5V
0.5V
0.5V
CC