MPC7448 POWERPC PROCESSOR HIGHLIGHTS mikroprosesor

The MPC7448 is the first discrete high- MPC7448 POWERPC® PROCESSOR BLOCK DIAGRAM
performance PowerPC® processor manufactured on 90 nanometer silicon-on-insulator (SOI)
process technology and continues Freescale Semiconductor’s strong legacy of providing PowerPC products with significant processing performance at very low power. The MPC7448 is designed to exceed 1.5 GHz processing performance and offers enhanced power management capabilities. Running at 1.4 GHz, the MPC7448 is expected to use less than 10 watts of power. MPC7448 processors are ideal for leading-edge computing, embedded network control and signal processing applications. Key architectural features include an MPX bus that scales to 200 MHz, 1 MB of on-chip L2 cache with support for Error Correcting Codes (ECC), and full 128-bit implementation of Freescale’s AltiVec™ technology with the added feature of supporting out-of-order transactions. The MPC7448 is pin compatible with Freescale’s MPC7447 and MPC7447A PowerPC products, offering an easy upgrade path to better system performance. Caching In
L2 cache helps keep the PowerPC processor pipeline full, enabling faster and more efficient processing—and the increase in the MPC7448’s L2 cache to 1 MB provides even greater opportunity for performance gains.

     The L2 cache is fully pipelined for two-cycle throughput in the MPC7448. It responds with an 11-cycle
load latency for an L1 miss that hits in L2 with ECC disabled and 12 cycles when ECC is enabled. In the MPC7448, as many as six outstanding cache misses are allowed between the L1 data cache and L2 bus. In addition, the MPC7448 supports a second cacheable store miss. The processors also provide cache locking to the L1 caches so that key performance algorithms and code can be locked in the L1 cache.


MPC7448 POWERPC PROCESSOR HIGHLIGHTS

CPU Speeds (internal) At least 1.5 GHz
Instructions per Clock 4 (3 + Branch)
L1 Cache (integrated) 32 KB instruction, 32 KB data
L2 Cache (integrated) 1 MB with optional ECC
Execution Units Integer(4), Floating-Point, AltiVec(4), Branch, Load/Store
Bus Protocol MPX/60x
Bus Frequency 200 MHz
Bus Interface 64-bit
Package 360 HiCTE BGA
Process Technology 90 nm silicon-on-insulator (SOI), Multi-Vt, Triple Gate Oxide,
Low-K Dielectric, 10 Year Reliability at 105°C



Compatibility and Support The MPC7448 can be a drop-in upgrade for MPC7447 and MPC7447A
processors because it is pin-for-pin compatible. In addition, as with all PowerPC processors, the MPC7448 is fully software compatible with the MPC7xxx family of processors. The Freescale family of PowerPC processors continues to enjoy the support of a broad set of operating systems, compilers and development tools from third-party vendors.