MC68EN360CAI25L Freescale Semiconductor, MC68EN360CAI25L Datasheet - Page 769

• Manufacturer Part Number: MC68EN360CAI25L
• Description: IC MPU QUICC 25MHZ 240-FQFP
• Manufacturer: Freescale Semiconductor
• Series: MC68000r

Specifications of MC68EN360CAI25L

• Processor Type: M683xx 32-Bit
• Speed: 25MHz
• Voltage: 5V
• Mounting Type: Surface Mount
• Package / Case: 240-FQFP
• Core Size: 32 Bit
• Cpu Speed: 25MHz
• Embedded Interface Type: SCP, TDM
• Digital Ic Case Style: FQFP
• No. Of Pins: 240
• Supply Voltage Range: 4.75V To 5.25V
• Rohs Compliant: Yes
• Family Name: M68xxx
• Device Core: ColdFire
• Device Core Size: 32b
• Frequency (max): 25MHz
• Instruction Set Architecture: RISC
• Supply Voltage 1 (typ): 5V
• Operating Supply Voltage (max): 5.25V
• Operating Supply Voltage (min): 4.75V
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 240
• Package Type: FQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Features: -
• Lead Free Status / Rohs Status: Compliant

Applications
9.4.3.1 BASIC INITIALIZATION. The following paragraphs describe basic software initial-
ization.
The module base address register (MBAR) should be set as desired. However, the QUICC
8-Kbyte block of address space should not overlap any memory array.
The module base address register enable (MBARE) should not be accessed.
In the module configuration register (MCR), ASTM and BSTM should be set. The user
should program BCLROID2–BCLROID0 to $3 and program the SDMA, IDMA1, and IDMA2
arbitration IDs in the SDMA configuration register and IDMA channel configuration registers
to 4, 2, and 0, respectively, to allow the SDMA and DRAM refresh to preempt IDMA trans-
fers. SHEN1–SHEN0 should be left cleared. SUPV should be cleared. BCLRIID2–
BCLRIID0 are not used and can be programmed to $0. IARB3–IARB0 can be left pro-
grammed to $F to allow SIM interrupts to have priority over CPM interrupts that occur at the
same level.
In the system protection control register (SYPCR), DBFE should be cleared. BME should be
set. If the software watchdog is not used, the SWE bit should be cleared. If the software
watchdog is used, the SWRI bit should be left set to cause a system reset, rather than an
interrupt.
The periodic interrupt control register (PICR) may be set as desired.
The port E pin assignment register (PEPAR) should be set to $31C0, which configures three
IOUTx lines to go out on some of the IRQx pins, the RAS1DD pin, and the use of the WE
lines instead of the A31–A28 lines. It also configures the AMUX pin (assuming DRAM is
used in the system; otherwise, the OE function should be programmed), four CASx lines,
CS7, and AVECO.
9.4.3.2 CONFIGURING THE MEMORY CONTROLLER. The
describe configuring the memory controller registers.
The global memory register (GMR) should be configured as follows:
9-49
The RFCNT bits may be set as desired. At 25 MHz, an RFCNT value of 24 (decimal) gives
one refresh every 15.6 s.
RFEN should be set.
RCYC depends on the DRAM speed. At 25 MHz (an 80-ns DRAM SIMM), RCYC should
be 00.
PGS2–PGS0 is not relevant since page mode and internal address multiplexing is not
used.
DPS should be set to 00.
WBT40 depends on timing; it is usually cleared for 80-ns DRAM SIMMs.
WBTQ depends on timing; it is usually set for 80-ns DRAM SIMMs.
EMWS is not used in this design since there is only one QUICC. It should be cleared.
Freescale Semiconductor, Inc.
For More Information On This Product,
MC68360 USER’S MANUAL
Go to: www.freescale.com
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