Motorola CPCI-6115 manual General Description, Processor Bus Resources

General Description Functional Description

4.3General Description

The CPCI-6115 is a peripheral slot CompactPCI CPU board based on the MPC7457 processor family and MV64360 PCI-Host bridge/system memory controller and the Intel 21555 PCI-to- PCI bridge. The CPCI-6115 supports up to 1.5 GB of DDR SDRAM, two PMC sites, 8MB of boot flash, 32MB of soldered flash, three Gigabit Ethernet ports and one IDE port. The CPCI- 6115 also supports the CompactPCI Packet Switching Backplane (PICMG 2.16) specification.

The CPCI-6115 has two planar PCI busses (PCI_0 and PCI_1). In order to support a more generic PCI bus hierarchy nomenclature, the MV64360 PCI busses are referred to in this document as PCI Bus 0.0 (root bridge instance 0, bus 0) and PCI Bus 1.0 (root bridge instance 1, bus 0). PCI Bus 0.0 connects to PMC 2. This PMC slot has PCI/PCI-X speed capability and supports non-Monarch PrPMC modules. PCI Bus 1.0 connects to PMC1, the 21555 PCI-to-PCI bridge and the IDE controller. This interface operates at 33 MHz PCI speed. Both PCI Planar busses are controlled by the MV64360 System Controller.

The MV64360 Device Controller can support up to 5 banks of devices. On the CPCI-6115, it supports the onboard flash, NVRAM/RTC, UART and programming registers. Each bank supports up to 512 MB of address space.

The MV64360 must acquire some knowledge about the system before it is configured by the software. This is done through jumper-controlled initialization. The jumper setting selects either a planar configuration resistor initialization, or an I2C interface SROM initialization.

The CPCI-6115 board interfaces to the CompactPCI bus via the J1 and J2 connectors as specified in the PICMG 2.0 specification. It draws +3.3 V and +5 V power, and optionally +/-12 V power, from the CompactPCI backplane through these two connectors. All other required voltages are regulated onboard from the +3.3 V or +5 V power.

Front panel connectors on the CPCI-6115 board include: one RJ-45 connector for the Gigabit Ethernet; one RJ-45 connector for the asynchronous serial port; a combined reset and abort switch; and two status LEDs. One additional asynchronous serial port is provided and routed to the J5 connector for rear I/O access. Two Gigabit Ethernet ports are routed to the J3 connector for PICMG 2.16 connectivity or other rear I/O access.

The CPCI-6115 contains two IEEE1386.1 PCI Mezzanine Card (PMC) slots. PMC 2 is a 32/64- bit capable and supports both front and rear I/O. PMC 1 is 32-bit capable and supports both front and rear I/O. All I/O pins of PMC 2 are routed to the J5 connector. All I/O pins of PMC 1 are routed to the J3 connector.

The CPCI-6115 board also provides access to the processor JTAG port via a standard 16-pin header.

4.3.1Processor Bus Resources

Devices resident on the processor bus of the CPCI-6115 are a single processor, the MV64360 System Controller and a debug connector (unpopulated). The bus is capable of operation in either 60x or MPX modes (jumper selectable) and runs at 133 MHz. Processor address and data bus parity generation and checking is supported.

CPCI-6115 CompactPCI Single Board Computer Installation and Use (6806800A68D) 69