Cirrus-logic CS42518 Manuel d'utilisateur télécharger pdf (Page 54)

54 DS584F2

CS42518

6.9 RVCR Status (address 08h) (Read Only)

6.9.1 DIGITAL SILENCE DETECTION (DIGITAL SILENCE)

Default = x

0 - Digital Silence not detected

1 - Digital Silence detected

Function:

The CS42518 will auto-detect a digital silence condition when 1548 consecutive zeros have been de-

tected.

6.9.2 AES FORMAT DETECTION (AES FORMATX)

Default = xxx

Function:

The CS42518

will auto-detect the AES format of the incoming S/PDIF stream and display the infor-

mation according to the following table.

6.9.3 SYSTEM CLOCK SELECTION (ACTIVE_CLK)

Default = x

0 - Output of PLL

1 - OMCK

Function:

This bit identifies the source of the internal system clock (MCLK).

76543210

Digital Silence AES Format2 AES Format1 AES Format0 Active_CLK RVCR_CLK2 RVCR_CLK1 RVCR_CLK0

AES

Format2

AES

Format1

AES

Format0

Description

000

Linear PCM

001

DTS



-CD

010

DTS



-LD

011

HDCD



100

IEC 61937

101

Reserved

110

Reserved

111

Reserved

Table 13. AES Format Detection

1 2 ... 49 50 51 52 53 54 55 56 57 58 59 ... 90 91

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Cirrus-logic CS42518 Manuel d'utilisateur Page 54

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