PNX1300EH NXP Semiconductors, PNX1300EH Datasheet - Page 40
PNX1300EH
Manufacturer Part Number
PNX1300EH
Description
Manufacturer
NXP Semiconductors
Datasheet
1.PNX1300EH.pdf
(548 pages)
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PNX1300/01/02/11 Data Book
1.9.7
The power consumption of PNX1300 Series is depen-
dent on the activity of the DSPCPU, the amount of pe-
ripherals being used, the frequency at which the system
is running as well as the loads on the pins.
The first section presents the power consumption for
known applications. The other power related sections
present the maximum power consumption. These maxi-
mum values are obtained with a ‘fake’ application that
turns on all the peripherals and runs intensive compute
on the CPU.
1.9.7.1
The
sumption for two typical applications:
• The DVD playback includes video display using the
• The MPEG4 application includes video and audio
Table 1-1. Power Consumption of Example Applications for PNX1300/01/02 (Vdd = 2.5V)
Table 1-2. Power Consumption of Example Applications for PNX1311(Vdd = 2.2V)
As previously mentioned the
show that the final power consumption for a realistic ap-
plication may be lower than the values reported in the
next section.
Based on these results and the following section, the
power consumption of PNX1300 Series, using an artifi-
1-14
DVD Playback
H.263 Vconf
MPEG4 (CIF) A/V
Playback
H.263 Vconf
APPLICATIONS
APPLICATIONS
VO peripheral and audio streaming using AO periph-
eral. The bitstream is brought into the TM-1300 sys-
tem over the PCI peripheral. The VLD co-processor
is used to perform the bitstream parsing. The bit-
stream is not scrambled therefore the DVDD co-pro-
cessor is not used and it is turned off.
playback of an enocded CIF stream. The bit stream
is brought into the PNX1300 system over the PCI
peripheral. The Video and Audio subsystems of the
PNX1300 were used to render the video and sound
from the decoded stream into the video monitor and
speakers.
Table 1-1
PNX1300 Series Power Consumption
Power Consumption for
Applications on PNX1300 Series
and
OPTIMIZATIONS
OPTIMIZATIONS
Table 1-2
PRELIMINARY SPECIFICATION
POWER
POWER
AFTER
AFTER
2.2 W
1.7 W
1.2 W
1.5 W
Table 1-1
present the power con-
3.0 W @ 180 MHz
2.9 W @ 166 MHz
2.5 W @ 166 MHz
2.4 W @ 166 MHz
OPTIMIZATIONS
OPTIMIZATIONS
WITHOUT
WITHOUT
POWER
POWER
and
Table 1-2
2.6 W @ 180 MHz
2.7 W @ 166 MHz
2.1 W @ 166 MHz
2.2 W @ 166 MHz
Peripherals
Peripherals
Turned Off
Turned Off
Unused
Unused
• The H263 video conferencing application includes
Three main technics may be applied to reduce the ‘Out
of the Box’ power consumption.
• Turn off the unused peripherals. Refer to
• Run the system at the required speed, i.e. some
• Powerdown the system or the DSPCPU each time
A more detailed description can be found in the applica-
tion note ‘TM-1300 Power Saving Features’ available at
the following website:
http://www.semiconductors.philips.com/trimedia/
cial scenario depicting an extremely demanding applica-
tion, for commonly used speeds, is as follows:
• PNX1300/01/02 is < 3.4 W @ 166:133 MHz
• PNX1311 is < 2.9 W @ 166:133 MHz
• PNX1302 is < 4.0 W @ 200:133 MHz
the following steps. It captures a CCIR656 video
stream at 30 frames/second using the VI peripheral.
The incoming video stream is downscaled, on the fly,
to SIF resolution by VI. The captured frames are then
downscaled to a QSIF resolution using the ICP co-
processor. The resulting QSIF image is sent over the
PCI bus via the ICP co-processor to a SVGA card
(PC monitor display) and encoded by the DSPCPU.
The resulting bitstream is then decoded by the
DSPCPU and displayed as a SIF image on the same
PC monitor (also using the ICP co-processor). All the
encoding/decoding part is done in the YUV color
space. The display is in the RGB16 color space.
Software is not optimized.
21.6 on page
application may not require to run at the full speed
grade of the chip.
the DSPCPU reached the Idle task.
2.6 W @ 180 MHz
1.9 W @ 111 MHz
1.3 W @ 70 MHz
1.7 W @ 111 MHz
System Speed
System Speed
Optimizations
Optimizations
Adjustment
Adjustment
21-2.
Philips Semiconductors
2.2 W @ 180 MHz
1.7 W @ 111 MHz
1.2 W @ 70 MHz
1.5 W @ 111 MHz
Idle task power
Idle task power
management
management
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