MPC8270 MOTOROLA [Motorola, Inc], MPC8270 Datasheet - Page 4

• Manufacturer Part Number: MPC8270
• Description: PowerQUICC II Family Hardware Specifications
• Manufacturer: MOTOROLA [Motorola, Inc]

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— High-performance (SPEC95 benchmark at 450 MHz; 855 Dhrystones MIPS at 450 MHz)
— Supports bus snooping for data cache coherency
— Floating-point unit (FPU)
Separate power supply for internal logic and for I/O
Separate PLLs for G2_LE core and for the CPM
— G2_LE core and CPM can run at different frequencies for power/performance optimization
— Internal core/bus clock multiplier that provides 2:1, 2.5:1, 3:1, 3.5:1, 4:1, 4.5:1, 5:1, 6:1, 7:1,
— Internal CPM/bus clock multiplier that provides 2:1, 2.5:1, 3:1, 3.5:1, 4:1, 5:1, 6:1, 8:1 ratios
64-bit data and 32-bit address 60x bus
— Bus supports multiple master designs
— Supports single- and four-beat burst transfers
— 64-, 32-, 16-, and 8-bit port sizes controlled by on-chip memory controller
— Supports data parity or ECC and address parity
32-bit data and 18-bit address local bus
— Single-master bus, supports external slaves
— Eight-beat burst transfers
— 32-, 16-, and 8-bit port sizes controlled by on-chip memory controller
60x-to-PCI bridge
— Programmable host bridge and agent
— 32-bit data bus, 66.67/83.3/100 MHz, 3.3 V
— Synchronous and asynchronous 60x and PCI clock modes
— All internal address space available to external PCI host
— DMA for memory block transfers
— PCI-to-60x address remapping
PCI bridge
— PCI Specification Revision 2.2 compliant and supports frequencies up to 66 MHz
— On-chip arbitration
— Support for PCI-to-60x-memory and 60x-memory-to-PCI streaming
— PCI host bridge or periphera
— Includes 4 DMA channels for the following transfers:
— Includes all of the configuration registers (which are automatically loaded from the EPROM
— Supports the I
— Hot-swap friendly (supports the hot swap specification as defined by PICMG 2.1 R1.0 August
8:1 ratios
– PCI-to-60x to 60x-to-PCI
– 60x-to-PCI to PCI-to-60x
– PCI-to-60x to PCI-to-60x
– 60x-to-PCI to 60x-to-PCI
and used to configure the MPC8280) required by the PCI standard as well as message and
doorbell registers
3, 1998)
MPC8280 PowerQUICC II™ Family Hardware Specifications
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capabilities
MOTOROLA