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Overview
The MPC8308 is a cost-effective, low-
power, highly integrated PowerQUICC
®
II Pro
processor designed to address the
requirements of networking applications
such as smart grid home energy gateways,
data concentrators, wireless LAN access
points, wireless femto base stations and
industrial applications such as industrial
control and factory automation. It extends the
PowerQUICC II Pro family by balancing the
higher MIPS/MHz performance provided by
the e300 core with low power consumption at
a very aggressive price.
For networking applications, the Gigabit
Ethernet MACs support connectivity to
the wired network while the PCI Express
®
and SDIO interfaces can offer connectivity
to wireless LAN or 3G and 4G modem
devices. The MPC8308 processor features
integrated IEEE
®
1588 time synchronization
for applications such as time-sensitive
telecommunications services, industrial
network switches, powerline networks and
test/measurement devices. All of these
applications will be fully enabled with the
MPC8308 processor and the low-cost
evaluation board with optimized Linux
®
BSP
and drivers. Freescale also works with third-
party partners to enable application software
for end user interfaces.
Core Complex
The MPC8308 processor incorporates the
e300c3 (603e core compatible) core at
266, 333 and 400 MHz with 1.92 DMIPS/
MHz. The core, built on Power Architecture
®
technology, includes dual integer units
as well as a modified multiply instruction.
These architectural enhancements enable
more efficient operations to be executed in
parallel, resulting in a significant performance
improvement. The e300 core complex
also includes 16 KB each of L1 instruction
and data caches and on-chip memory
management units (MMUs) with dual integer
units and SP/DP FPU.
Integrated Communication Processors
MPC8308 PowerQUICC
®
II Pro Processor
MPC8308 Block Diagram
USB 2.0
Coherent System Bus
2 x RGMII/MII
DDR2 SDRAM
Controller
Local Bus
PCI
Express
®
eSDHCeSDHC
2 x Gigabit
Ethernet
DUART, 2 x I
2
C, SPI,
Timers, GPIO,
Interrupt Control
16 KB
I-Cache
e300 Core
16 KB
D-Cache
Core
Features
Benefits
High-performance e300 core, built on Power
Architecture
®
technology, at 1.92 DMIPS/MHz
High-efficiency core means less MHz needed to get the
job done or extra CPU headroom to perform other tasks
Comprehensive third-party ecosystem
Faster time to market
Migration path
Improved performance/cost migrating from
PowerQUICC
®
or PowerQUICC II.
Common architecture eases migration.
Best-in-class power consumption
Enables fanless, “green” and low-cost designs,
and improves reliability
Integrated Gigabit Ethernet, USB, SD/MMC controller,
IEEE
®
1588v2, PCI Express
®
interfaces
Allows the flexibility to address a wide range of
applications and reduced system cost
