SH7268/SH7269 Group

Transmission/Reception of Renesas SPDIF Interface

1.

Specifications

Input the transmitter buffer data stored in the large-capacity on-chip RAM to the Renesas SPDIF interface (hereinafter

called RSPDIF) channel 0, and transmits the frame which complies with the IEC60958 standard (hereinafter called

IEC60958 frame). Interrupts are used for transferring the user information and channel status information, and Direct

Memory Access Controller (hereinafter called DMAC) is used for transferring the audio data.

The IEC60958 frame transmitted from the RSPDIF channel 0 is transferred to the RSPDIF channel 1 by the pass back

function. The data received in the RSPDIF channel 1 will be stored in the large-capacity on-chip RAM by the interrupt

or the DMAC as well as transmitting the data.

Table 1.1 lists the Peripheral Functions and Their Applications and Figure 1.1 shows the Operation Overview.

Table 1.1 Peripheral Functions and Their Applications

Peripheral Function

Application

Renesas SPDIF interface (RSPDIF)

Transmits and receives the SPDIF

Direct Memory Access Controller (DMAC)

Transfers audio data

Interrupt controller (INTC)

Transfers user information and channel status

information

Large-capacity on-chip RAM

Transmitter buffer and receiver buffer area

DMAC

(channel 4)

Renesas SPDIF interface

Pass

back

Large-capacity on-chip RAM

Lch

Rch

User

Info.

Audio data

Channel status information

Lch

Rch

Channel 0 (transmit only)

IEC60958 frame

transmission

Channel 1 (receive only)

IEC60958 frame reception

Lch

Rch

Audio data

DMAC

(channel 5)

User

info.

Channel status information

Lch

Rch

Receiver

buffer

Transmi-

tter

buffer

Figure 1.1 Operation Overview

R01AN1188EJ0100 Rev.1.00

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Jul. 27, 2012