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ISP1561 Datasheet, PDF (1/102 Pages) NXP Semiconductors – ISP1561BM | |||
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ISP1561
Hi-Speed USB PCI host controller
Rev. 01 â 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 Speciï¬cation Rev. 2.0, Open
Host Controller Interface Speciï¬cations Rev. 1.0a, Enhanced Host Controller
Interface Speciï¬cation for Universal Serial Bus Rev. 0.95, PCI Local Bus
Speciï¬cation Rev. 2.2 and PCI Bus Power Management Interface Speciï¬cation
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 indicatorsâGoodLink⢠along
with green and amber LEDsâto allow user-rich messages of the Root Hub
downstream ports status, without requiring detailed port information to be reï¬ected 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
Speciï¬cation, 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.
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