SH7268/SH7269 Group

Transmission/Reception of Renesas SPDIF Interface

R01AN1188EJ0100 Rev.1.00

Page 13 of 23

Jul. 27, 2012

io_init_dmac4

Outline

Initialization of DMAC channel 4

Header

io_dmac.h

Declaration

void io_init_dmac4(void * src, void * dest, int32_t count)

Description

Sets the DMAC channel 4, and allows the DMA transfer from source address to

destination address specified by the argument. Allows register reload, and continues

to transfer after the transfer has been completed. Transfer completion interrupt is

allowed. The RSPDIF transmitter DMA audio data register shall be specified for

transfer destination address.

Arguments

void *src

: Transfer source address

void *dest

: Transfer destination address

int32_t count

: Number of transfers

Return Value

None

io_init_dmac5

Outline

Initialization of DMAC channel 5

Header

io_dmac.h

Declaration

void io_init_dmac5(void * src, void * dest, int32_t count)

Description

Set the DMAC channel 5, and allows the DMA transfer from source address to

destination address specified by the argument. Allows register reload, and continues

to transfer after the transfer has been completed. Transfer completion interrupt is

allowed. The RSPDIF receiver DMA audio data register shall be specified for

transfer source address.

Arguments

void *src

: Transfer source address

void *dest

: Transfer destination address

int32_t count

: Number of transfers

Return Value

None

io_reload_dmac4

Outline

Reload register setting for the DMAC channel 4

Header

io_dmac.h

Declaration

void io_reload_dmac4(void * rsrc, void * rdest, int32_t rcount)

Description

Sets the reload register for the DMAC channel 4.

Arguments

void *rsrc

: Transfer source address to be reloaded

void *rdest

: Transfer destination address to be reloaded

int32_t rcount

: Number of transfers to be reloaded

Return Value

None

io_reload_dmac5

Outline

Reload register setting for the DMAC channel 5

Header

io_dmac.h

Declaration

void io_reload_dmac5(void * rsrc, void * rdest, int32_t rcount)

Description

Sets the reload register for the DMAC channel 5.

Arguments

void *rsrc

: Transfer source address to be reloaded

void *rdest

: Transfer destination address to be reloaded

int32_t rcount

: Number of transfers to be reloaded

Return Value

None