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參數資料
| 型號： | STP2223BGA |
| 元件分類： | 總線控制器 |
| 英文描述： | PCMCIA BUS CONTROLLER, PBGA456 |
| 封裝： | PLASTIC, BGA-456 |
| 文件頁數： | 1/34頁 |
| 文件大小： | 476K |
| 代理商： | STP2223BGA |
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DATA SHEET
1
STP2223BGA
U2P
UPA to PCI Interface
DESCRIPTION
The U2P * chip is the primary connection on an UltraSPARC CPU board between the UPA System Bus
(including UltraSPARC Processors and Memory) and a PCI based I/O Subsystem. Its major functions are
UPA port interface, PCI bus interface, processor I/O data transfers, DMA data transfers and interrupt
dispatch.
Features
Full master and slave port connection to the high-speed UltraSPARC UPA Interconnect Architecture. The
UPA is a split address/data packet-switched bus which has a potential data throughput rate of over one
gigabyte/sec. UPA data is ECC protected.
Two physically separate PCI bus segments, with full master and slave support.
PCI Bus A has the following features:
- 5 volt or 3.3 volt signalling.
- 64-bit data bus.
- Compatible with the PCI Rev 2.1 Specication.
- Compatible with the PCI 66MHz extensions.
- Support for up to four master devices (at 33MHz only).
PCI Bus B has the following features:
- 5 volt signalling.
- 64-bit data bus.
- Compatible with the PCI Rev 2.1 Specication.
- Support for up to six master devices.
Two separate 16-entry streaming caches, one for each bus segment, for accelerating some kinds of PCI
DVMA activity. Single IOMMU with 16-entry TLB for mapping DVMA addresses for both busses.
A “Mondo-Vector” Dispatch Unit, or MDU, for delivering Interrupt requests to UltraSparc CPU modules,
including support for PCI interrupts from up to six total slots, as well as interrupts from on board IO
devices.
* U2P was code named Psycho+
July 1997
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