MC68HC708XL36 FREESCALE [Freescale Semiconductor, Inc], MC68HC708XL36 Datasheet - Page 121

• Manufacturer Part Number: MC68HC708XL36
• Description: HCMOS Microcontroller Unit
• Manufacturer: FREESCALE [Freescale Semiconductor, Inc]

Hardware-Initiated
DMA Service
Requests
11-dma_b
MOTOROLA
The following sources can generate DMA service requests:
8. To initiate the DMA transfer with software, set the software initiate
•
•
•
Freescale Semiconductor, Inc.
For More Information On This Product,
a. Enable the DMA channel x by writing to the transfer enable bit,
b. Enable or disable DMA channel x to generate CPU interrupts
c. Select the DMA bus bandwidth by writing to the bus bandwidth
bit, SWIx, in DMA control register 2 (DC2). (See
Register 2
Timer interface module (TIM) — The TIM can generate the
following DMA service requests:
– TIM channel 0 input capture/output compare
– TIM channel 1 input capture/output compare
– TIM channel 2 input capture/output compare
– TIM channel 3 input capture/output compare
Serial peripheral interface module (SPI) — The SPI can generate
the following DMA service requests:
– SPI receiver full
– SPI transmitter empty
Serial communications interface module (SCI) — The SCI can
generate the following DMA service requests:
– SCI receiver full
– SCI transmitter empty
TECx.
on transfer completion by writing to the CPU interrupt enable
bit, IECx.
control bits, BB0 and BB1.
Go to: www.freescale.com
on page 139.)
DMA
Functional Description
DMA Control
MC68HC708XL36
DMA
121