PNX1500E/G,557 NXP Semiconductors, PNX1500E/G,557 Datasheet - Page 87
PNX1500E/G,557
Manufacturer Part Number
PNX1500E/G,557
Description
IC MEDIA PROC 240MHZ 456-BGA
Manufacturer
NXP Semiconductors
Specifications of PNX1500E/G,557
Applications
Multimedia
Core Processor
TriMedia
Controller Series
Nexperia
Interface
I²C, 2-Wire Serial
Number Of I /o
61
Voltage - Supply
1.14 V ~ 1.26 V
Operating Temperature
0°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
456-BGA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Program Memory Type
-
Ram Size
-
Lead Free Status / Rohs Status
Compliant
Other names
568-1296
935277746557
PNX1500E/G
935277746557
PNX1500E/G
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PNX15XX_PNX952X_SER_N_4
Product data sheet
3.3 Clock System
3.4 Power Management
The scripted boot, in combination with an appropriately programmed I
allows the PNX15xx/952x Series to boot in many ways.
A stand-alone PNX15xx/952x Series system is able to reliably update its own Flash
boot image, whether the Flash is standard or nand Flash. In most systems this is
done by extra Flash storage capacity that is used by the Flash update software to
guarantee atomicity of a boot image update under power failure. The update either
succeeds or the old boot image is retained. In some systems, however, it may be cost
attractive to use a medium size boot I
would hold the code to recover a corrupted Flash from some system resource such
as a network or disk drive.
In the presence of an external host processor boot is very different. PNX15xx/952x
Series must execute an I
level personality data. Once this data is obtained, PNX15xx/952x Series is ready to
follow the standardized PCI enumeration and configuration protocol executed by the
host. In external host configurations a single small I
Flash memory is needed. The host is responsible for configuring a list of PNX15xx/
952x Series internal registers, loading an application software image into PNX15xx/
952x Series DRAM and starting the TM3260.
PNX15xx/952x Series provides a low cost, highly programmable clock system. All the
clocks used within PNX15xx/952x Series system can be generated internally with a
mixed combination of PLLs, Direct Digital Synthesizers (DDSs) or simple clock
dividers depending on the clock module requirements. All the clocks are derived from
a low cost 27 MHz crystal clock. This input clock is multiplied internally by 64 to
generate a 1.728 GHz clock from which each PNX15xx/952x Series module receives
a derived clock. This internal high speed clock allows minimal jitter on the generated
clocks.
The PNX15xx/952x Series system, with its programmable clocks, can be set to
operate in 3 different power modes.
•
•
•
Normal mode in which each module runs at the required speed and the CPU
runs at its maximum speed.
Saving mode in which each module runs at required speed and the CPU runs at
the speed that the application needs. For example MP3 audio decoding will
require less than 30 MHz, while a simple profile MPEG-4 video decoding will
require less than 100 MHz.
Sleep mode in which all the clocks of the system are turned off. A small amount
of logic stays alive in order to wake up the system. Before going into sleep mode,
the CPU can decide that some generated clocks, like the PCI clock may remain
active. In that case the clocks are gated for each module belonging to PNX15xx/
952x Series. Also the PCI outgoing clock may be reduced to XTAL_IN (27 MHz
recommended) divided by 16. The system will not respond to incoming PCI
transactions or generate outgoing PCI transactions, but other PCI components
may remain operational.The system can wake up upon one of these three events:
Rev. 4.0 — 03 December 2007
2
C EEPROM boot script that loads a small amount of board
2
C EEPROM instead. This boot EEPROM
PNX15xx/952x Series
2
C EEPROM is required, and no
Chapter 2: Overview
© NXP B.V. 2007. All rights reserved.
2
C EEPROM,
2-87
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