pnx1500 NXP Semiconductors, pnx1500 Datasheet - Page 323
pnx1500
Manufacturer Part Number
pnx1500
Description
Pnx15xx Series Connected Media Processor
Manufacturer
NXP Semiconductors
Datasheet
1.PNX1500.pdf
(828 pages)
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
pnx1500E
Manufacturer:
NORTEL
Quantity:
1 000
- Current page: 323 of 828
- Download datasheet (8Mb)
Philips Semiconductors
Volume 1 of 1
PNX15XX_SER_3
Product data sheet
Figure 6:
logical
address
Address Mapping: Interleaved Mode
2.3.1 Memory Region Mapping Scheme
2.3 Addressing
ROW_WIDTH
row
It should also be noted that under some circumstances the PMAN will be granted a
request even though there is a valid CPU request pending. This can only be detected
within simulations and will be very difficult for a user to actually discern. This
condition results from the particular optimizations that were performed on the logic
and only delays a CPU by one DDR transaction. The overall bandwidth for the CPU is
not affected.
The DDR SDRAM Controller performs address mapping of MTL addresses onto DDR
memory rank, bank, row and column addresses. The 32-bit MTL addresses, provided
to the DDR controller, cover a 4-GB address range. Of these 32-bit addresses, the
upper four bits are ignored by the DDR controller, reducing the addressable range to
256 MB. Note that the DDR controller only supports up to 256 MB of DDR memory
(either implemented by a single rank or two ranks of size 128 MB).
For a 32-bit DDR interface, each column is 4 bytes wide. Therefore the 2 least
significant bits of the MTL address are ignored.
For a 16-bit DDR interface (or a 32-bit DDR interface using the half width mode),
each column is 2 bytes wide. Therefore the least significant bit of the MTL address is
ignored.
The mapping is defined by the MMIO register DDR_DEF_BANK_SWITCH.
2^BANK_SWITCH defines the size of the interleaving. The addressing is then done
as pictured in
Changing the BANK_SWITCH value may improve/decrease performance. This is
application specific. 32-byte and 1024-byte are the recommended operating modes.
This mapping can be illustrated in the following tables. In all of these examples a 32-
bit DDR interface and a DDR burst length of 8 32-bit/4-byte elements (a full DDR
burst transfers 8 * 4 bytes= 32 bytes).
COLUMN_WIDTH -
BANK_SWITCH
column
Figure
Rev. 3 — 17 March 2006
6.
2^(COLUMN_WIDTH - BANK_SWITCH)
bank
2
r = 2^ROW_WIDTH
BANK_SWITCH
column
ROW r-1
BANK 0
BANK 0
BANK 0
BANK 0
ROW 2
ROW 1
ROW 0
least significant bit is:
bit 0 for x8
bit 1 for x16
bit 2 for x32
© Koninklijke Philips Electronics N.V. 2006. All rights reserved.
2^BANK_SWITCH columns
ROW r-1
BANK 1
BANK 1
BANK 1
BANK 1
ROW 2
ROW 1
ROW 0
Chapter 9: DDR Controller
PNX15xx Series
ROW r-1
BANK 2
BANK 2
BANK 2
BANK 2
ROW 2
ROW 1
ROW 0
ROW r-1
BANK 3
BANK 3
BANK 3
BANK 3
ROW 2
ROW 1
ROW 0
9-10
Related parts for pnx1500
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: