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Features

This section summarizes the major features of the 106, as follows:

? 60x processor interface

— Supports up to four 60x processors

— Supports various operating frequencies and bus divider ratios

— 32-bit address bus, 64-bit data bus

— Supports full memory coherency

— Supports optional 60x local bus slave

— Decoupled address and data buses for pipelining of 60x accesses

— Store gathering on 60x-to-PCI writes

? Secondary (L2) cache control

— Configurable for write-through or write-back operation

— Supports cache sizes of 256 Kbytes, 512 Kbytes, and 1 Mbyte

— Up to 4 Gbytes of cacheable space

— Direct-mapped

— Supports byte parity

— Supports partial update with external byte decode for write enables

— Programmable interface timing

— Supports pipelined burst, synchronous burst, or asynchronous SRAMs

— Alternately supports an external L2 cache controller or integrated L2 cache module

? Memory interface

— 1 Gbyte of RAM space, 16 Mbytes of ROM space

— Supports parity or error checking and correction (ECC)

— High-bandwidth, 64-bit data bus (72 bits including parity or ECC)

— Supports fast page mode DRAMs, extended data out (EDO) DRAMs, and synchronous

DRAMs (SDRAMs)

— Supports 1 to 8 banks of DRAM/EDO/SDRAM with sizes ranging from 2 Mbyte to

128 Mbytes per bank

— ROM space may be split between the PCI bus and the 60x/memory bus (8 Mbytes each)

— Supports 8-bit asynchronous ROM or 64-bit burst-mode ROM

— Supports writing to Flash ROM

— Configurable external buffer control logic

— Programmable interface timing

? PCI interface

— Compliant with

PCI Local Bus Specification,

Revision 2.1

— Supports PCI interlocked accesses to memory using LOCK signal and protocol

— Supports accesses to all PCI address spaces

— Selectable big- or little-endian operation

— Store gathering on PCI writes to memory

— Selectable memory prefetching of PCI read accesses

— Only one external load presented by the MPC106 to the PCI bus

— Interface operates at 20–33 MHz

— Word parity supported

— 3.3 V/5.0 V-compatible

? Support for concurrent transactions on 60x and PCI buses

? Power management

— Fully-static 3.3-V CMOS design

— Supports 60x nap, doze, and sleep power management modes and suspend mode

? IEEE 1149.1-compliant, JTAG boundary-scan interface

? 304-pin ceramic ball grid array (CBGA) package