SH7052 datasheet(194/919 Pages) RENESAS

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9.4

Examples of Use

9.4.1

Example of DMA Transfer between On-Chip SCI and External Memory

In this example, on-chip serial communication interface channel 0 (SCI0) receive data is

transferred to external memory using DMAC channel 0.

Table 9.5 indicates the transfer conditions and the set values of each of the registers.

Table 9.5

Transfer Conditions and Register Set Values for Transfer between On-chip SCI

and External Memory

Transfer Conditions

Value

Transfer source: RDR0 of on-chip SCI0

SAR0

H'FFFFF005

Transfer destination: external memory

DAR0

H'00400000

Transfer count: 64 times

DMATCR0

H'00000040

Transfer source address: fixed

CHCR0

H'00020105

Transfer destination address: incremented

Transfer request source: SCI0 (RDR0)

Bus mode: cycle-steal

Transfer unit: byte

Interrupt request generation at end of transfer

DMAC master enable on

DMAOR

H'0001

9.4.2

Example of DMA Transfer between A/D Converter and On-Chip Memory

(Address Reload On)

In this example, on-chip A/D converter channel 0 is the transfer source and on-chip memory is the

transfer destination, and the address reload function is on.

Table 9.6 indicates the transfer conditions and the set values of each of the registers.

SH7052 Datasheet(PDF) 194 Page - Renesas Technology Corp