PNX1500E NXP Semiconductors, PNX1500E Datasheet - Page 109

• Manufacturer Part Number: PNX1500E
• Manufacturer: NXP Semiconductors

Specifications of PNX1500E

• Lead Free Status / Rohs Status: Not Compliant

1. Introduction
2. System Memory Map
Figure 1:
The Two Operating Modes of PNX15xx/952x Series
a) PNX15xx/952x Series in host mode
Flash/IDE
PNX15xx/
PCI Bus
This chapter presents information on the PNX15xx/952x Series System On-Chip
(SOC) and its MMIO registers. Further details on each module composing PNX15xx/
952x Series are available on dedicated chapters though this databook. Reading this
chapter is recommended before jumping to the individual module documentation.
PNX15xx/952x Series is designed to work in two different environments: standalone
and host mode
program (i.e. the software application that runs on the TM3260 CPU) from an
EEPROM or a Flash memory device. In this mode the PNX15xx/952x Series acts as
the master. In host mode PNX15xx/952x Series program is downloaded into the
PNX15xx/952x Series main memory before the TM3260 CPU is released from reset.
In this mode the PNX15xx/952x Series acts as a slave. This mode is typically used for
a PCI plug-in card or a standalone system where a control processor is the master. In
both modes the PCI bus is the main bus used to attach other components of the
board system. In order to successfully get all these components working together, it is
important to understand PNX15xx/952x Series system memory map and its bus
structure.
Following the PCI memory addressing principles, PNX15xx/952x Series system
provides several apertures in its 32-bit address space to communicate to the other
devices through the PCI bus. At system level, there are three different views of these
apertures. The view from the TM3260 CPU, the view from the internal bus, called
DCS, and the view from the PCI module. The DCS view is introduced to present the
overall view of the system memory map.
Chapter 3: System On Chip
Resources
PNX15xx/952x Series Data Book – Volume 1 of 1
Rev. 4.0 — 03 December 2007
Controller
Interrupt
PCI Agent
PCI Bridge
PCI Bus
Arbiter
(Figure
Host CPU
(e.g., x86)
PCI Agent
1). In standalone mode PNX15xx/952x Series retrieves its
b) PNX15xx/952x Series in standalone mode as the host
PNX15xx/
IDE
PCI Bus
FLASH
PCI Agent
Product data sheet
PCI Agent