General Information

• The PowerPC-750/7410 card is a 6U (233.35mm x 160mm) Conduction Cooled VME card which has a PowerPC-750/7410 CPU chip operating with an internal clock frequency of 200MHz (PowerPC-750) and 400MHz (PowerPC-7410) and an external processor bus frequency of 66.66MHz.

• PowerPC-750 is a high performance Reduced Instruction Set Computer (RISC) super-scalar processor.
• PowerPC-7410 is a high performance PowerPC G4 Series RISC super-scalar processor with AltiVec technology.

• Both PowerPC-750 and 7410 have 64KB inbuilt L1 Cache (32KB Instruction Cache, 32KB Data Cache). PowerPC-750 has 1MB of inbuilt L2 cache and 7410 has 2MB of inbuilt L2 cache. The CPU card has 32MB of SDRAM (4M x 72), 2MB of boot FLASH and 4MB of user FLASH.

• CPU card has PCI bus as a local bus and VME bus as a back plane bus. PCI bus interface is provided through the bridge chip IBM CPC-700. VME interface is provided through the bridge chip Tundra Universe-II. The CPC-700 provides a bridge between the PowerPC-750 / 7410 processor to the PCI bus as well as a high-speed memory controller besides having some peripherals built in. SDRAM, Boot FLASH and User FLASH are connected on the memory bus of the CPC-700. Power-on booting routines are stored in the Boot FLASH. User FLASH contains all user application programs. CPC-700 has two inbuilt UARTs (Universal Asynchronous Receiver Transmitter). Two RS422/RS232 selectable serial links are provided through these two UARTs of the CPC700.

• CPC-700 has two IIC bus interfaces. One serial EEPROM is interfaced to one of the IIC interface of the CPC-700. One Real Time Clock is interfaced to the other IIC bus interface. CPC-700 has 10 General-purpose timers and an inbuilt Interrupt controller. Interrupt controller supports 29 interrupts (12 External interrupts).

• 10/100Mbps Ethernet interface is provided through Ethernet Controller AM79C972 which is directly sitting on the PCI bus. The different clocks for PowerPC-750/7410, SDRAM, CPC700 and PCI bus are generated using a Phased Locked Loop (PLL) Clock Driver Circuit. The PowerPC-750/7410 CPU card requires four different supply voltages (5V, 3.3V and 2.5V, 1.8V). The CPU card operates with 5V external supply. The 3.3V, 2.5V and 1.8V supply voltages are derived using on board linear regulators. A watchdog timer is provided in the Power SupplyMonitorCircuit