Mpc8240 Integrated Processor Applications - Motorola MPC8240 User Manual

– MIV signal: Marks valid address and data bus cycles on the memory bus.
– Error injection/capture on data path
– IEEE 1149.1 (JTAG)/test interface
• Processor core
— High-performance, superscalar processor core
— Integer unit (IU), floating-point unit (FPU) (software enabled or disabled),
load/store unit (LSU), system register unit (SRU), and a branch processing unit
(BPU)
— 16-Kbyte instruction cache
— 16-Kbyte data cache
— Lockable L1 cache—entire cache or on a per-way basis

1.1.2 MPC8240 Integrated Processor Applications

The MPC8240 can be used for control processing in applications such as routers, switches,
multi-channel modems, network storage, image display systems, enterprise I/O processor,
Internet access device (IAD), disk controller for RAID systems, and copier/printer board
control. Figure 1-2 shows the MPC8240 in the role of host processor.
Peripheral 1
Figure 1-2. System Using an Integrated MPC8240 as a Host Processor
Figure 1-3 shows the MPC8240 in a peripheral processor application.
MPC8240
DMA
MU(I O)
Peripheral
2
Logic
2
I C
EPIC
Processor Core
PCI Bus
Peripheral 2 Peripheral 3
Chapter 1. Overview
MPC8240 Integrated Processor Overview
CTRL
Data
Local Memory:
ROM /
DRAM, EDO,
Port X
SDRAM
PCI-to-PCI
Bridge
PCI Bus
1-5