STA310 datasheet(64/90 Pages) STMICROELECTRONICS

64 / 90 page

STA310

64/90

AC3_HDR

High dynamic range

Address: 0x6A

Type: R/W

Software Reset: NC

Hardware Reset: UND

Description:

This register corresponds to the Dynamic range

scale factor for high level signals, also called cut fac-

tor in the Dolby specifications.

HDR = 255 * Cut Factor (in decimal), where the cut

factor is a fractional number between 0 and 1. It is

used to scale the dynamic range control word for

high-level signals that would otherwise tend to be re-

duced.

When HDR = 0xff (cut factor = 1.0), the high level sig-

nals reduction is the one given in the stream.

A value of zero disables the high-level compression.

This word is ignored if the compression mode is set

to RF mode.

AC3_LDR

Low dynamic range

Address : 0x6B

Type: R/W

Software Reset: NC

Hardware Reset: UND

Description:

This register corresponds to the Dynamic range

scale factor for low level signals, also called boost

factor in the Dolby specifications.

LDR = 255 * BoostFactor (in decimal), where the

boost factor is a fractional number between 0 and

1.0. The boost factor scales the dynamic range con-

trol-word for low-level signals that would otherwise

tend to be amplified.

When LDR = 0xff (boost factor = 1.0), and the low

level signals amplification is maximum.

A value of zero disables the low-level amplification.

This word is ignored if the compression mode is set

to RF mode.

AC3_RPC

Repeat count

Address + 0x6C

Type: R/W

Software Reset: NC

Hardware Reset: UND

Description:

When a CRC error is detected, previous blocks can

be repeated or muted.

This register specifies the number of audio blocks to

repeat before muting. If this is zero, then blocks are

muted until the next frame is decoded

AC3_KARAMODE

Karaoke downmix

AudioBaseAddress + 0x6D

Type: R/W

Software Reset: NC

Hardware Reset: UND

Description:

Downmix mode when a karaoke bit stream is re-

ceived.

A Karaoke bitstream can be composed of 5 chan-

nels, which are: L (left), R (right), M (Music), V1(Vocal

1), V2 (Vocal 2).

There are two major modes when receiving a

Karaoke bitstream: aware and capable.

When in 'aware' mode (

KARAMODE = 0), a pre-

defined downmix is applied on all incoming channels.

When in 'capable' mode ( KARAMODE = 4, 5, 6, 7),

the user can choose to reproduce or not the two in-

7654321

STA310 数据表(PDF) 64 Page - STMicroelectronics

STA310 数据表(HTML) 64 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90

数据表下载

链接网址

STA310 数据表(PDF) 64 Page - STMicroelectronics

STA310 数据表(HTML) 64 Page - STMicroelectronics

Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90

数据表 下载

链接网址

数据表下载