IC MPC870ZT66 MPC870ZT MPC870Z MPC870

     Four CAS lines, four WE lines, and one OE line

DRAM controller programmable to support most size and speed memory interfaces

Glueless interface to DRAM, SIMMS, SRAM, EPROMs, Flash EPROMs, and other memory devices

Up to 30 wait states programmable per memory bank

     Each bank can be a chip select or RAS to support a DRAM bank.

Contains complete dynamic RAM (DRAM) controller

Memory controller (eight banks)

32 address lines

Up to 32-bit data bus (dynamic bus sizing for 8, 16, and 32 bits)

Advanced on-chip emulation debug mode

and 16 protection groups

     MMUs support multiple page sizes of 4, 16, and 512 Kbytes, and 8 Mbytes; 16 virtual address spaces

MMUs with 32-entry TLB, fully associative instruction and data TLBs

are lockable on a cache block basis.

Caches are physically addressed, implement a least recently used (LRU) replacement algorithm, and

blocks.

Cache coherency for both instruction and data caches is maintained on 128-bit (4-word) cache

Data cache is two-way, set-associative with 256 sets

Instruction cache is two-way, set-associative with 256 sets in 2 blocks

8-Kbyte data cache and 8-Kbyte instruction cache (see Table 1)

     The core performs branch prediction with conditional prefetch and without conditional execution.

general-purpose registers (GPRs)

Single-issue, 32-bit core (compatible with the PowerPC architecture definition) with thirty-two 32-bit

The 66-/80-MHz core frequencies support both the 1:1 and 2:1 modes.

     The 133-MHz core frequency supports 2:1 mode only.

Maximum frequency operation of the external bus is 80 MHz (in 1:1 mode)

Embedded MPC8xx core up to 133 MHz

The following list summarizes the key MPC875/870 features:

integration unit (SIU), and a communications processor module (CPM).

The MPC875/870 is comprised of three modules that each use the 32-bit internal bus: a MPC8xx core, a system

Features

IC MPC870ZT66 MPC870ZT MPC870Z MPC870 - Hardware Specifications - Freescale Semiconductor, Inc

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IC MPC870ZT66 MPC870ZT MPC870Z MPC870 - Hardware Specifications - Freescale Semiconductor, Inc