MC68340PV16VE Freescale Semiconductor, MC68340PV16VE Datasheet - Page 293
MC68340PV16VE
Manufacturer Part Number
MC68340PV16VE
Description
IC MCU 32BIT 16MHZ 144-LQFP
Manufacturer
Freescale Semiconductor
Datasheet
1.MC68340FE25E.pdf
(441 pages)
Specifications of MC68340PV16VE
Processor Type
M683xx 32-Bit
Speed
16MHz
Voltage
3.3V
Mounting Type
Surface Mount
Package / Case
144-LQFP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
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Part Number:
MC68340PV16VE
Manufacturer:
Freescale Semiconductor
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10 000
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* Initialize channel status reg.
* Clear the DONE, BES, BED, CONF and BRKP bits to allow channel to startup.
* Initialize function code reg.
* DMA space, supervisor data space for source and destination.
* Initialize source operand address
* Source address is equal to $6000.
* Initialize destination operand address
* Destination address is equal to $8000.
* Initialize the byte transfer count register
* The number of bytes to be transferred is $64 or 50 words
* Channel control reg. init. and Start DMA transfers
* No interrupts are enabled, destination (write) cycle.
* Source address is not incremented. Increment the destination address.
* Source size is word, destination size is word. REQ is internal.
* 100% of bus bandwidth, dual-address transfers, start the DMA transfers.
***************************************************************************
***************************************************************************
Example 4: Cycle Steal Request Generation, Dual-Address Transfers.
***************************************************************************
* MC68340 basic DMA channel register initialization example code.
* This code is used to initialize the 68340's internal DMA channel
* registers, providing basic functions for operation.
* The code sets up channel 1 for external cycle steal request generation,
* dual-address transfers. DMA 16-bit wide data from an odd address to an
* even address. Control signals are asserted on the DMA read cycle.
***************************************************************************
***************************************************************************
* SIM40 equates
***************************************************************************
MBAR
MODBASE EQU $FFFFF000 SIM40 MBAR address value
MOTOROLA
MOVE.W
MOVE.B
MOVE.B
MOVE.L
MOVE.L
MOVE.L
MOVE.W
END
EQU $0003FF00 Address of SIM40 Module Base Address Reg.
#$0742,DMAINT1(A0)
#$7C,DMACSR1(A0)
#$DD,DMAFCR1(A0)
SARADD,DMASAR1(A0)
DARADD,DMADAR1(A0)
NUMBYTE,DMABTC1(A0)
#$068D,DMACCR1(A0)
Freescale Semiconductor, Inc.
For More Information On This Product,
MC68340 USER’S MANUAL
Go to: www.freescale.com
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