PNX1701EH,557 NXP Semiconductors, PNX1701EH,557 Datasheet - Page 812
PNX1701EH,557
Manufacturer Part Number
PNX1701EH,557
Description
Manufacturer
NXP Semiconductors
Datasheet
1.PNX1701EH557.pdf
(832 pages)
Specifications of PNX1701EH,557
Operating Temperature (min)
0C
Operating Temperature Classification
Commercial
Mounting
Surface Mount
Lead Free Status / Rohs Status
Not Compliant
- Current page: 812 of 832
- Download datasheet (9Mb)
Philips Semiconductors
Volume 1 of 1
PNX17XX_SER_1
Preliminary data sheet
4.3 Module DMA
4.4 SIMD Programming Issues
4.5 Optional Endian Mode Override
Every DMA capable module in PNX17xx Series observes the system big-endian
signal, and therefore the global SYS_ENDIANMODE.BIG_ENDIAN value, to
determine how to write each data item or unit to memory.
An example of a unit would be:
The module performs byte swapping within units as needed, and packs units as
needed for transmission across on-chip buses. Byte swapping is done in such a
fashion that 8, 16 and 32-bit units always end up in memory bytes in the form
prescribed by the CPU rule. Successive item packing are placed in incrementing
addresses, as designated by the DMA rule.
The module DMA hardware architecture ensures that software dealing with loads and
stores of unit size data can be written in a way that is oblivious to the endian mode.
With the current TM32 CPU core, this is not possible for software that performs Single
Instruction Multiple Data (SIMD) style programming using multimedia operations.
Consider the case of a FIR filter, operating on 16-bit sample units, but using
2-at-a-time load/store/multiply operations. Which of the two 16-bit halfwords is the
earlier sample?
The current TM32 CPU core on PNX17xx Series requires that SIMD software be
written aware of endian mode.
Some PNX17xx Series DMA modules have bits in a control register that allow
override of the global endian mode. Refer to each module for details. This method is
used only in modules that deal with DMA of data of a single, fixed size (in a given
mode). Such modules implement a field that allows selection of the following modes:
•
•
•
•
•
•
•
•
•
16-bit audio sample
32-bit audio sample
32-bit unit containing a RGBa 8888 true color pixel with alpha value.
For big-endian mode, the msb halfword contains the earlier sample.
For little-endian mode, the lsb halfword contains the earlier sample.
Normal mode (reset default), obey global PNX17xx Series endian mode
Explicit little-endian, unswapped
Swap over 16 bits
Swap over 32 bits
Rev. 1 — 17 March 2006
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
PNX17xx Series
Chapter 29: Endian Mode
29-8
Related parts for PNX1701EH,557
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
NXP Semiconductors designed the LPC2420/2460 microcontroller around a 16-bit/32-bitARM7TDMI-S CPU core with real-time debug interfaces that include both JTAG andembedded trace
Manufacturer:
NXP Semiconductors
Datasheet:
Part Number:
Description:
NXP Semiconductors designed the LPC2458 microcontroller around a 16-bit/32-bitARM7TDMI-S CPU core with real-time debug interfaces that include both JTAG andembedded trace
Manufacturer:
NXP Semiconductors
Datasheet:
Part Number:
Description:
NXP Semiconductors designed the LPC2468 microcontroller around a 16-bit/32-bitARM7TDMI-S CPU core with real-time debug interfaces that include both JTAG andembedded trace
Manufacturer:
NXP Semiconductors
Datasheet:
Part Number:
Description:
NXP Semiconductors designed the LPC2470 microcontroller, powered by theARM7TDMI-S core, to be a highly integrated microcontroller for a wide range ofapplications that require advanced communications and high quality graphic displays
Manufacturer:
NXP Semiconductors
Datasheet:
Part Number:
Description:
NXP Semiconductors designed the LPC2478 microcontroller, powered by theARM7TDMI-S core, to be a highly integrated microcontroller for a wide range ofapplications that require advanced communications and high quality graphic displays
Manufacturer:
NXP Semiconductors
Datasheet:
Part Number:
Description:
The Philips Semiconductors XA (eXtended Architecture) family of 16-bit single-chip microcontrollers is powerful enough to easily handle the requirements of high performance embedded applications, yet inexpensive enough to compete in the market for hi
Manufacturer:
NXP Semiconductors
Datasheet:
Part Number:
Description:
The Philips Semiconductors XA (eXtended Architecture) family of 16-bit single-chip microcontrollers is powerful enough to easily handle the requirements of high performance embedded applications, yet inexpensive enough to compete in the market for hi
Manufacturer:
NXP Semiconductors
Datasheet:
Part Number:
Description:
The XA-S3 device is a member of Philips Semiconductors? XA(eXtended Architecture) family of high performance 16-bitsingle-chip microcontrollers
Manufacturer:
NXP Semiconductors
Datasheet:
Part Number:
Description:
The NXP BlueStreak LH75401/LH75411 family consists of two low-cost 16/32-bit System-on-Chip (SoC) devices
Manufacturer:
NXP Semiconductors
Datasheet:
Part Number:
Description:
The NXP LPC3130/3131 combine an 180 MHz ARM926EJ-S CPU core, high-speed USB2
Manufacturer:
NXP Semiconductors
Datasheet:
Part Number:
Description:
The NXP LPC3141 combine a 270 MHz ARM926EJ-S CPU core, High-speed USB 2
Manufacturer:
NXP Semiconductors
Part Number:
Description:
The NXP LPC3143 combine a 270 MHz ARM926EJ-S CPU core, High-speed USB 2
Manufacturer:
NXP Semiconductors
Part Number:
Description:
The NXP LPC3152 combines an 180 MHz ARM926EJ-S CPU core, High-speed USB 2
Manufacturer:
NXP Semiconductors
Part Number:
Description:
The NXP LPC3154 combines an 180 MHz ARM926EJ-S CPU core, High-speed USB 2
Manufacturer:
NXP Semiconductors
Part Number:
Description:
Standard level N-channel enhancement mode Field-Effect Transistor (FET) in a plastic package using NXP High-Performance Automotive (HPA) TrenchMOS technology
Manufacturer:
NXP Semiconductors
Datasheet: