mpc855t Freescale Semiconductor, Inc, mpc855t Datasheet - Page 2

• Manufacturer Part Number: mpc855t
• Description: Mpc855t Powerquicc Integrated Communications Processor
• Manufacturer: Freescale Semiconductor, Inc

Overview
1
The MPC860 power quad integrated communications controller (PowerQUICC™) is a versatile one-chip
integrated microprocessor and peripheral combination designed for a variety of controller applications. It
particularly excels in communications and networking systems. The PowerQUICC unit is referred to as
the MPC860 in this hardware specification.
The MPC860 implements Power Architecture™ technology and contains a superset of Freescale’s
MC68360 quad integrated communications controller (QUICC), referred to here as the QUICC, RISC
communications proccessor module (CPM). The CPU on the MPC860 is a 32-bit core built on Power
Architecture technology that incorporates memory management units (MMUs) and instruction and data
caches.. The CPM from the MC68360 QUICC has been enhanced by the addition of the inter-integrated
controller (I
type of memory, including high-performance memories and new types of DRAMs. A PCMCIA socket
controller supports up to two sockets. A real-time clock has also been integrated.
Table 1
2
1
MPC860DE
MPC860DT
MPC860DP
MPC860EN
MPC860SR
MPC860T
MPC860P
MPC855T
Supporting documentation for these devices refers to the following:
2. MPC855T User’s Manual (MPC855TUM, Rev. 1)
1. MPC860 PowerQUICC Family User’s Manual (MPC860UM, Rev. 3)
Overview
shows the functionality supported by the MPC860 family.
Part
2
C) channel. The memory controller has been enhanced, enabling the MPC860 to support any
Instruction
Cache
16
16
Cache (Kbytes)
4
4
4
4
4
4
MPC860 PowerQUICC™ Family Hardware Specifications, Rev. 8
Data Cache
Table 1. MPC860 Family Functionality
4
4
8
4
4
4
8
4
Up to 2
Up to 2
Up to 2
Up to 4
Up to 4
Up to 4
Up to 4
10T
1
Ethernet
10/100
—
—
—
1
1
1
1
1
ATM
Yes
Yes
Yes
Yes
Yes
Yes
—
—
SCC
2
2
2
4
4
4
4
1
Freescale Semiconductor
Reference
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