SH7269 datasheet(10/26 Pages) RENESAS

10 / 26 page

SH7268/SH7269 Group

Transmission/Reception of Renesas SPDIF Interface

6.4

Structure/Union List

Figure 6.2 shows the Structure/Union Used in the Sample Code.

typedef struct

{

uint32_t

a_buf [SPDIF_AUDIO_BUFSZ];

/* Audio data buffer */

uint32_t

u_buf [SPDIF_USER_BUFSZ];

/* User information buffer */

int32_t

u_idx;

/* User information index */

uint32_t

s_buf [SPDIF_NUMOF_CH];

/* Channel status information buffer */

}spdif_t;

Figure 6.2 Structure/Union Used in the Sample Code

6.5

Variables

Table 6.3 lists the Static Variables.

Table 6.3 Static Variables

Type

Variable Name

Contents

Function Used

volatile spdif_t

g_spdout

SPDIF transmitter buffer

main, io_spdout_start,

io_spdif_isr

volatile spdif_t

g_spdin

SPDIF receiver buffer

main, io_spdin_start,

io_spdif_isr

6.6

Functions

Table 6.4 lists the Functions.

Table 6.4 Functions

Function Name

Outline

main

Main processing

io_init_rspdif

Initialization of the RSPDIF

io_spdout_start

Starting of the RSPDIF transmission

io_spdin_start

Starting of the RSPDIF reception

io_spdout_change_status

Updating channel status of the RSPDIF transmission

io_rspdif_isr

Interrupt function of the RSPDIF

io_init_dmac4

Initialization of the DMAC channel 4

io_init_dmac5

Initialization of the DMAC channel 5

io_reload_dmac4

Reload register setting for the DMAC channel 4

io_reload_dmac5

Reload register setting for the DMAC channel 5

io_dmac4_dei4_isr

Transfer completion interrupt function for the DMAC channel 4

io_dmac5_dei5_isr

Transfer completion interrupt function for the DMAC channel 5

R01AN1188EJ0100 Rev.1.00

Page 10 of 23

Jul. 27, 2012

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