SH7268/SH7269 Group

Transmission/Reception of Renesas SPDIF Interface

R01AN1188EJ0100 Rev.1.00

Page 9 of 23

Jul. 27, 2012

6.2

File Composition

Table 6.1 lists the Files Used in the Sample Code. Files not generated by the integrated development environment

should not be listed in this table.

Table 6.1 Files Used in the Sample Code

File Name

Outline

Remarks

main.c

Main program

io_rspdif.c

Initialization of the RSPDIF

io_rspdif.h

Interface definition of the io_rspdif.c

io_dmac.c

Initialization of the DMAC

io_dmac.h

Interface definition of the io_dmac.c

6.3

Constants

Table 6.2 lists the Constants Used in the Sample Code.

Table 6.2 Constants Used in the Sample Code

Constant Name

Setting Value

Contents

USER_NUMOF_BLOCK

1024

User buffer size (by the block)

SPDIF_OK

0

Return value when the processing was successful

SPDIF_ERR

-1

Return value when the processing was failed

SPDIF_PASS_BACK

1

Setting value of the RSPDIF pass back function (1: allowed)

SPDIF_NUMOF_FRM

192

Number of frames in one block

SPDIF_NUMOF_CH

2

Number of channels (left channel, right channel)

SPDIF_AUDIO_BUFSZ

192 * 2

Buffer size for the audio data (by the longword)

SPDIF_USER_BUFSZ

(192 * 2) / 32

Buffer size for the user information (by the longword)

SPDIF_CH1

0

Channel 1 (left channel) index

SPDIF_CH2

1

Channel 2 (right channel) index

SPDIF_STATUS_CH1

H'10100000

Setting value of channel 1 status to be transmitted

SPDIF_STATUS_CH2

H'10200000

Setting value of channel 2 status to be transmitted

SPDIF_UBO_BIT

H'00002000

UBO bit of the status register

SPDIF_UBU_BIT

H'00001000

UBU bit of the status register

SPDIF_CE_BIT

H'00000800

CE bit of the status register

SPDIF_PARE_BIT

H'00000400

PARE bit of the status register

SPDIF_PREE_BIT

H'00000200

PREE bit of the status register

SPDIF_CSE_BIT

H'00000100

CSE bit of the status register

SPDIF_ABO_BIT

H'00000080

ABO bit of the status register

SPDIF_ABU_BIT

H'00000040

ABU bit of the status register

SPDIF_RUIR_BIT

H'00000020

RUIR bit of the status register

SPDIF_TUIR_BIT

H'00000010

TUIR bit of the status register

SPDIF_CSRX_BIT

H'00000008

CSRX bit of the status register

SPDIF_CBRX_BIT

H'00000004

CBRX bit of the status register

SPDIF_CSTX_BIT

H'00000002

CSTX bit of the status register

SPDIF_CBTX_BIT

H'00000001

CBTX bit of the status register