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URL: http://www.princeton.com.tw

MP3 Audio Decoder

PT8401

PT8401 v 1.3

Page 21

Updated March 2002

Princeton Technology Corp.

00

01

10

11

Subband=4-31

Subband=8-31

Subband=12-31

Subband=16-31

Off

On

Off

On

Off

Off

On

On

3

copyright

0:not protected, 1: protected

2

original

0:copy, 1:original

emphasis

Indicate which type of emphesis is used

0..1

00

01

10

11

None

50/15 microseconds

reserved

CCITT J.17

0x03

NumAncillaryBits Current frame contain number of ancillary bits contain in current frame. Update in

every frame.

0x0

R

0x04.

AncillaryData

Current frame’s ancillary data. Update in every frame. Maximum is 56 bytes.

0x0

R

0x05

Error Status

Bit 0 : Set to 1 : indicates CRC check error.

Bit 1 : Set to 1 means bitstream error. The following several condition may cause

error :

1). Information in MPEG header point to “reserved” condition.(layer to “00”,

sampling frequency to “11”).

2). Bit rate index point to free and forbidden condition.

0x0

R

Electrical Characteristics

Absolute Maximum Ratings

Symbol

Parameter

Pin Name

Min.

Max.

Unit

Digital supply voltage

2.7

4

V

Ambient Operating Temperature

-10

85

?C

Recommended Operating Conditions

Symbol

Parameter

Pin

Name

Min.

Typ.

Max.

Unit

Ambient Operating

25

?C