ISP1563 Просмотр технического описания (PDF) - Philips Electronics

Номер в каталоге

Компоненты Описание

Список матч

ISP1563

Hi-Speed Universal Serial Bus PCI Host Controller

Philips Electronics 

Philips Semiconductors

ISP1563

HS USB PCI Host Controller

Additionally, function #0 provides legacy keyboard and mouse support to comply with

Open Host Controller Interface Specification for USB Rev. 1.0a.

Each function has its own configuration space. The PCI enumerator should allocate the

memory address space for each of these functions. Power management is implemented

in each PCI function and all power states are provided. This allows the system to achieve

low power consumption by switching off the functions that are not required.

8.1.1 PCI configuration space

PCI Local Bus Specification Rev. 2.2 requires that each of the three PCI functions of the

ISP1563 provides its own PCI configuration registers, which can vary in size. In addition to

the basic PCI configuration header registers, these functions implement capability

registers to support power management.

The registers of each of these functions are accessed by the respective driver. Section 8.2

provides a detailed description of the various PCI configuration registers.

8.1.2 PCI initiator and target

A PCI initiator initiates PCI transactions to the PCI bus. A PCI target responds to PCI

transactions as a slave. In the case of the ISP1563, the two Open Host Controllers and

the Enhanced Host Controller function as both initiators or targets of PCI transactions

issued by the host CPU.

All USB Host Controllers have their own operational registers that can be accessed by the

system driver software. Drivers use these registers to configure the Host Controller

hardware system, issue commands to it, and monitor the status of the current hardware

operation. The Host Controller plays the role of a PCI target. All operational registers of

the Host Controllers are the PCI transaction targets of the CPU.

Normal USB transfers require the Host Controller to access system memory fields, which

are allocated by USB HCDs and PCI drivers. The Host Controller hardware interacts with

the HCD by accessing these buffers. The Host Controller works as an initiator in this case,

and becomes a PCI master.

8.2 PCI configuration registers

The OHCI USB Host Controllers and the EHCI USB Host Controller contain two sets of

software-accessible hardware registers: PCI configuration registers and memory-mapped

Host Controller registers.

A set of configuration registers is implemented for each of the three PCI functions of the

ISP1563, see Table 3.

Remark: In addition to the normal PCI header, from offset index 00h to 3Fh,

implementation-specific registers are defined to support power management and

function-specific features.

9397 750 14224

Product data sheet

Rev. 01 — 14 July 2005

© Koninklijke Philips Electronics N.V. 2005. All rights reserved.

15 of 107

Share Link: