ISP1561
Hi-Speed USB PCI host controller
Rev. 01 — 06 February 2003
Product data
1. General description
The ISP1561 is a PCI-based, single-chip Universal Serial Bus (USB) Host Controller.
It integrates two Original USB Open Host Controller Interface (OHCI) cores, one
Hi-Speed USB Enhanced Host Controller Interface (EHCI) core and four transceivers
that are compliant with Hi-Speed USB and Original USB. The functional parts of the
ISP1561 are fully compliant with
Universal Serial Bus Specification Rev. 2.0, Open
Host Controller Interface Specifications Rev. 1.0a, Enhanced Host Controller
Interface Specification for Universal Serial Bus Rev. 0.95, PCI Local Bus
Specification Rev. 2.2
and
PCI Bus Power Management Interface Specification
Rev. 1.1.
The integrated high performance USB transceivers enable the ISP1561 to handle all
Hi-Speed USB transfer speed modes: high-speed (480 Mbit/s), full-speed (12 Mbit/s)
and low-speed (1.5 Mbit/s). The ISP1561 provides four downstream ports that
enables simultaneous connections of USB devices at different speeds.
The ISP1561 provides three downstream port status indicators—GoodLink™ along
with green and amber LEDs—to allow user-rich messages of the Root Hub
downstream ports status, without requiring detailed port information to be reflected in
the internal registers.
The ISP1561 is fully compatible with various operating system drivers, such as
Microsoft
®
Windows
®
standard OHCI and EHCI drivers that are present in
Windows 98 Second Edition (SE), Windows Millennium Edition (Me), Windows XP
and Windows 2000.
The ISP1561 directly interfaces to any 32-bit, 33 MHz PCI bus. It has 5 V-tolerant PCI
pins that can source 3.3 V. The PCI interface fully complies with
PCI Local Bus
Specification, Rev. 2.2.
The ISP1561 is ideally suited for use in Hi-Speed USB host-enabled motherboards,
Hi-Speed USB host PCI add-on card applications, mobile applications, and
embedded solutions.
To facilitate motherboard development, the ISP1561 can use the available 48 MHz
clock signal to reduce the total cost of a solution. However, to reduce the
electromagnetic interference (EMI), it is recommended that the 12 MHz clock is used
in PCI add-on card designs.
PHILIPS [ NXP SEMICONDUCTORS ]
