Pcio-2 - Sun Microsystems Sun Blade 1000 Service Manual

PCI Interface
The PCI-B interface is 64-bit wide at 33 MHz. It supports slave (for PIO) and master
(for DMA) transactions on the PCI bus. Master transactions use 256-byte burst
transfers.
Note – The byte burst rate is programmable and can vary.
The PCIO-2 is a multi-function PCI device as defined by the PCI specification, and it
supports a separate configuration space for each of the 4 interfaces. See Section C.1.8,
"PCI Bus" on page C-27 for details.
Ethernet Leaf
The Ethernet interface supports two DMA channels for full duplex. the PCIO-2
Ethernet interfaces through PHY 6612 and COMBO magnetics and RJ45 connector.
See Section C.1.14, "Ethernet" on page C-36 for details.
USB Leaf
USB (Universal Serial Bus) is a standard defined for the PC industry that provides
connectivity to low-cost, low-bandwidth peripherals.
USB defines a tree topology through hub devices although logically it behaves as a
bus. The USB standard defines two data transfer rates: 1.5 and 12 Mbit/sec. USB
supports live connect and disconnect of devices (hot-plugging).
The PCIO-2 USB channel engine has a single DMA engine with 1K bit of internal
buffering. The DMA engine is the USB host controller and a hub with 4 ports. As a
host controller it manages control flow, data flow and connections. The PCIO-2 USB
host controller programming model is Open HCI compatible.
The Sun Blade 1000 and Sun Blade 2000 workstations use USB connectors to
interface to the Sun Type-6 USB keyboard and mouse. The Type-6 USB keyboard
does not include a hub. The mouse is also connected directly to a backpanel USB
connector.
IEEE 1394 Leaf
IEEE 1394 is a high-performance serial bus designed for real-time data transfers
supporting an isochronous transfer mode. In this mode, bandwidth is guaranteed
through pre-assignment.
Appendix C Functional Description C-21