Host Bridges (EHB) by Renesas play a critical system role acting as a hub between the host processor, the system memory, and the system input/output (I/O). The host processor and the system I/O both use the host bridge to access common system memory. In addition, the system controller and host processor use the host bridge to configure and manage system I/O.

Renesas offers host bridges that service high-end discrete processors as well as bridges that are optimized for embedded integrated controllers.

Technical inquiries or support questions can be submitted via the technical support form.

PowerSpan II™

The PowerSpan II is a multi-port PCI bus switch that bridges PCI to the PowerQUICC™ II (MPC8260), MPC7xx, PowerPC® 7xx, and PMC-Sierra WinPath™ processors. The bridge defines a new level of PCI bus switch flexibility.

The PowerSpan II has a switched PCI architecture, which maximizes transfer concurrency and improves the efficiency and burst performance on the PCI and processor buses. Along with a revolutionary switched PCI architecture, the PowerSpan II features integrated PCI-to-PCI bridging, concurrent prefetch read capability, multi-port Direct Memory Access (DMA) operation, and CompactPCI Hot Swap support. The PowerSpan II is available in single or dual PCI variants. The single PCI PowerSpan II is a two-port device that has a PCI interface and a PowerPC bus interface. The dual PCI variant is a three-port device that has two PCI interfaces and a PowerPC bus interface.

The PowerSpan II in conjunction with the PowerPro, a PowerPC memory controller, provides a 100MHz PowerPC interconnect solution. This flexible offering allows designers to leverage the PowerSpan II and PowerPro devices across many different system architectures with a common investment in software.

QSpan II™

The QSpan II is an industry-proven, Freescale™ Semiconductor processor-to-PCI system interconnect device. The QSpan II enables board designers to bring PCI-based embedded products to market faster, for less cost, and with high performance.

The QSpan II is designed to gluelessly bridge the Freescale PowerQUICC™ and QUICC™ (MC68360) processors to the PCI bus. The QSpan II is backward compatible with the QSpan 1.2.

Memory & Logic

Product Selection Table

    Processing table
    Part Number
    PCI Bus
    Processor Bus
    Memory Interface
    Temp. Range
    Power Consumption Max (W)
    Pkg. Code
    Pkg. Dimensions (mm)
    105°C Max. Case Temp.
    CA91L8260B
    PowerPC to PCI Bus Switch    		 66MHz/64 bit PCI PowerQUICC II (MPC82xx)-100MHz 0 to 70°C 1.9 AE420, AEG420 35.0 x 35.0 x 2.33
    CA91L862A
    PowerQUICC to PCI Bridge    		 33MHz/32-bit PCI PowerQUICC (MPC8xx) -50MHz -40 to 85°C 0.9 BG256, BGG256 27.0 x 27.0 x 2.0
    TSI108
    Host Bridge    		 133MHz/64-bit PCI-X PowerPC 7xx/7448 -200MHz DDR2-400 0 to 70°C 3.7 RM1023 33.0 x 33.0 x 2.0
    TSI109
    Host Bridge    		 133MHz/64-bit PCI-X PowerPC 7xx/7448 -200MHz DDR2-400 -40 to 85°C, 0 to 70°C 3.7 HM1023, RM1023 33.0 x 33.0 x 2.0
    TSI110
    Host Bridge    		 133MHz/64-bit PCI-X PowerPC 7xx/7448 -167MHz DDR2-333 MHz 0 to 70°C 2.27 RM1023 33.0 x 33.0 x 2.0
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    Documentation

    Title Type Date
    Military and Aerospace Product Overview
    PDF603 KB
    Overview
    Switching and Bridging Solutions
    PDF1.24 MB
    Overview