STA310 datasheet(56/90 Pages) STMICROELECTRONICS

56 / 90 page

STA310

56/90

This

contains

header

data

HEAD[23:16].HEAD3[7:5]=“000”,

all

cases

HEAD3[4:0] = DTYPE

DTYPE is the data type and is defined as follows:

This register can not detect the data-type of data in a stream.

HEADLEN

Frame length

Address: 0x44 - 0x45

Type: RO

Software Reset: UND

Hardware Reset: UND

Description:

The HEADLEN register contains the bit length of the

compressed data frame HEAD[15:0]. HEADER reg-

isters are all updated as soon as the decoder begins

to decode a frame.

PTS

Address: 0x46 to 0x4A

Type: R/W

Software Reset: UND

Hardware Reset: UND

Description:

When the PTS interrupt is activated, a new PTS val-

ue is stored in this register. Once the PTS[32] value

is read bit PTS of the PTS register is cleared.

ERROR

ERROR code

Address + 0x0F

Type: RO

Software Reset: 0

Hardware Reset:0

Description:

This is a status register, when read by the ST20, this

and the corresponding interrupt register are cleared.

This 7-bit register is ANDed with 0x7F to get the cor-

rect value. The value in the ERROR register indi-

cates the type of error that has occurred. These

errors are defined in the table below.

Bit

Description

DTYPE

0000: Null data or Linear PCM

0001: Dolby Digital

0100: MPEG-1 Layer I

0101: MPEG-1 Layer II or MPEG-2

word extension

0110: MPEG-2 Layer II with extension

1001: MPEG-2 Layer II low sample

rate

(11) 1011: DTS-1 (Frame Size 512)

(12) 1100: DTS-2 (Frame Size 1024)

(13) 1101: DTS-3 (Frame Size 2048)

HEADLEN[15:8]

HEADLEN[7:0]

0x46

PTS[32]

0x47

PTS[31:24]

0x48

PTS[23:16]

0x49

PTS[15:8]

0x4A

PTS[7:0]

5432

Error Name

Value

(decimal)

Dolby Digital decoding

No error

EXPAND_DELTA_PAST_END_ARRAY

XDCALL_TRY_TO_REUSE_REMAT_FLG

XDCALL_TRY_TO_REUSE_COUPLING_ST

XDCALL_CANT_COUPLE_IN_DUAL_MODE

XDCALL_TRY_TO_REUSE_CPL_LEAK

XDCALL_TRY_TO_REUSE_SNR

XDCALL_TRY_TO_REUSE_BIT_ALLOC

XDCALL_TRY_TO_REUSE_COUPLING_EX

PONENT_STRA

XDCALL_TRY_TO_REUSE_EXPONENT_S

TRA

XDCALL_TRY_TO_REUSE_LFE_EXPONEN

T_STRA

XDCALL_CHBWCOD_IS_TOO_HIGH

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