isp1564 NXP Semiconductors, isp1564 Datasheet - Page 33

• Manufacturer Part Number: isp1564
• Description: Isp1564 Hi-speed Universal Serial Bus Pci Host Controller
• Manufacturer: NXP Semiconductors

NXP Semiconductors
ISP1564_1
Product data sheet
10.2 USB bus states
B1 state (PCI clock = intermittent clock operation mode, PCI bus power = on) —
When a PCI bus is in B1, PCI V
transactions, however, are allowed to take place on the bus. The B1 state indicates a
perpetual idle state on the PCI bus.
B2 state (PCI clock = stop, PCI bus power = on) — PCI V
but the clock is stopped and held in the LOW state.
B3 state (PCI clock = stop, PCI bus power = off) — PCI V
devices on the PCI bus segment.
Reset state — When the USB bus is in the reset state, the USB system is stopped.
Operational state — When the USB bus is in the active state, the USB system is
operating normally.
Suspend state — When the USB bus is in the suspend state, the USB system is
stopped.
Resume state — When the USB bus is in the resume state, the USB system is operating
normally.
Rev. 01 — 4 December 2006
CC
is still applied to all devices on the bus. No bus
HS USB PCI Host Controller
CC
CC
is still applied on the bus,
is removed from all
© NXP B.V. 2006. All rights reserved.
ISP1564
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