MC68MH360EM25L Freescale Semiconductor, MC68MH360EM25L Datasheet - Page 721

• Manufacturer Part Number: MC68MH360EM25L
• Description: IC MPU QUICC ETHER 25MHZ 240FQFP
• Manufacturer: Freescale Semiconductor

Specifications of MC68MH360EM25L

• Processor Type: M683xx 32-Bit
• Speed: 25MHz
• Voltage: 5V
• Mounting Type: Surface Mount
• Package / Case: 240-FQFP
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Features: -

Freescale Semiconductor, Inc.
SECTION 9
APPLICATIONS
9.1 MINIMUM SYSTEM CONFIGURATION
This section describes a basic minimum system configuration for the QUICC. It discusses
the hardware and software issues of configurating the QUICC to support a basic system with
a variety of ROM and RAM types.
9.1.1 QUICC Hardware Configuration
These paragraphs discuss the hardware issues relating to the configuration of the QUICC.
Reference Figure 9-1 during these discussions. This configuration assumes a 32-bit data
bus. Comments about the changes required for a 16-bit data bus solution are given at the
end of the discussion.
9.1.1.1 QUICC BASIC ACCESSES. The basic connection is made through the data and
address bus. All 32 data lines are used in this application, although not all memories are a
full 32-bits wide.
Twenty-eight address lines are used, giving a 256-Mbytes address capability. It is possible
to use all 32 address lines, but the QUICC would then lose its write enable lines (WE3–
WE0). Since these lines are very useful in memory interfaces, they are used in the applica-
tion.
The function code (FC3–FC0) and data strobe (DS) lines are shown routed to the system
bus, although the memories in this application do not require them.
Other pins not directly needed are DSACKx, BERR, SIZx, PERR, IPIPEx, and a number of
chip selects. The DSACKx lines are not required because the on-chip wait state generator
is used. The BERR pin is not needed because all bus errors are generated by internal mon-
itor logic. The SIZx pins are not needed because the memory controller has programmable
port sizes for each memory bank. The PERR pin is not needed because parity errors gen-
erate bus errors. The IPIPEx pins are only needed for emulator support. The additional chip
selects can be used to add additional peripherals as required.
MOTOROLA
MC68360 USER’S MANUAL
9-1
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