adsst-21065lks-240 Analog Devices, Inc., adsst-21065lks-240 Datasheet - Page 15

• Manufacturer Part Number: adsst-21065lks-240
• Description: High End, Multichannel, 32-bit Floating-point Audio Processor
• Manufacturer: Analog Devices, Inc.

POWER DISSIPATION
These specifications apply to the internal power portion of V
supply current and total supply current. For a complete discussion of the code used to measure power dissipation, see the technical
note SHARC Power Dissipation Measurements.
Specifications are based on the following operating scenarios:
Operation
Instruction Type
Instruction Fetch
Core Memory Access
Internal Memory DMA
To estimate power consumption for a specific application, use the following equation where % is the amount of time your program
spends in that state:
REV. 0
%
PEAK I
×
DDINPEAK
Parameter
I
I
I
I
I
NOTES
1
2
3
4
5
DDIDLE16
The test program used to measure I
tions. Actual internal power measurements made using typical applications are less than specified.
I
I
IDLE denotes SST-Melody-SHARC state during execution of IDLE instruction.
IDLE16 denotes SST-Melody-SHARC state during execution of IDLE16 instruction.
DDINPEAK
DDINHIGH
DDINLOW
DDIDLE
DDINHIGH
DDINLOW
is a composite average based on a range of low activity code.
is a composite average based on a range of high activity code.
+
%
Peak Activity (I
Multifunction
Cache
2 per Cycle (DM and PM)
1 per Cycle
HIGH I
Supply Current (Internal)
Supply Current (Internal)
Supply Current (Internal)
Supply Current (IDLE)
Supply Current (IDLE16)
Table III. Internal Current Measurement Scenarios
×
DDINHIGH
Table II. Internal Current Measurements
DDINPEAK
DDINPEAK
+
represents worst case processor operation and is not sustainable under normal application condi-
%
LOW I
)
DD
4
5
1
2
3
only. See the Power Dissipation section for calculation of external
–15–
×
DDINLOW
Test Conditions
t
t
t
t
t
t
t
t
V
Internal Memory
High Activity (I
Multifunction
1 per Cycle (DM)
1 per 2 Cycles
CK
CK
CK
CK
CK
CK
CK
CK
DD
= 33 ns, V
= 30 ns, V
= 33 ns, V
= 30 ns, V
= 33 ns, V
= 30 ns, V
= 33 ns, V
= 30 ns, V
= max
+
%
IDLE
DD
DD
DD
DD
DD
DD
DD
DD
= max
= max
= max
= max
= max
= max
= max
= max
DDINHIGH
16
×
I
DDIDLE
)
Max
470
510
275
300
240
260
150
155
50
SST-Melody-SHARC
16
=
Low Activity (I
Single Function
Internal Memory
None
1 per 2 Cycles
Unit
mA
mA
mA
mA
mA
mA
mA
mA
mA
Power Consumption
DDINLOW
)