STA013T$013TR STMicroelectronics, STA013T$013TR Datasheet - Page 17

• Manufacturer Part Number: STA013T$013TR
• Description: IC DECODER AUDIO MPEG 2.5 44TQFP
• Manufacturer: STMicroelectronics
• Type: Audio Decoderr

Specifications of STA013T$013TR

• Applications: Multimedia
• Voltage - Supply, Analog: 2.4 V ~ 3.6 V
• Voltage - Supply, Digital: 2.4 V ~ 3.6 V
• Mounting Type: Surface Mount
• Package / Case: 44-TQFP, 44-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 497-8855-2; STA013T$013TR

The meaning of the flags are shown in the follow-
ing tables:
MPEG IDs
Layer
in Layer III these two flags must be set always to
"01".
Protection_bit
It equals "1" if no redundancy has been added
and "0" if redundancy has been added.
Bitrate_index
indicates the bitrate (Kbit/sec) depending on the
MPEG ID.
Sampling Frequency
indicates the sampling frequency of the encoded
audio signal (KHz) depending on the MPEG ID
Frequency
Sampling
bitrate index
’00’
’01’
’10’
’11’
’0000’
’0001’
’0010’
’0011’
’0100’
’0101’
’0110’
’0111’
’1000’
’1001’
’1010’
’1011’
’1100’
’1101’
’1110’
’1111’
IDex
0
0
1
1
reserved
MPEG1
44.1
48
32
forbidden
ID = 1
free
112
128
160
192
224
256
320
32
40
48
56
64
80
96
ID
0
1
0
1
reserved
MPEG2
22.05
24
16
MPEG 2.5
reserved
MPEG 2
MPEG 1
forbidden
ID = 0
MPEG2.5
free
reserved
112
128
144
160
16
24
32
40
48
56
64
80
96
8
11.03
12
8
Padding bit
if this bit equals ’1’, the frame contains an addi-
tional slot to adjust the mean bitrate to the sam-
pling frequency, otherwise this bit is set to ’0’.
Private bit
Bit for private use. This bit will not be used in the
future by ISO/IEC.
Mode
Indicates the mode according to the following ta-
ble. The joint stereo mode is intensity_stereo
and/or ms_stereo.
Mode extension
These bits are used in joint stereo mode. They in-
dicates which type of joint stereo coding method
is applied. The frequency ranges, over which the
intensity_stereo and ms_stereo modes are ap-
plied, are implicit in the algorithm.
Copyright
If this bit is equal to ’0’, there is no copyright on
the bitstream, ’1’ means copyright protected.
Original/Copy
This bit equals ’0’ if the bitstream is a copy, ’1’ if it
is original.
Emphasis
Indicates the type of de-emphasis that shall be
used.
mode
emphasis
’00’
’01’
’10’
’11’
’00’
’01’
’10’
’11’
stereo
joint stereo (intensity_stereo and/or ms_stereo)
dual_channel
single_channel (mono)
none
50/15 microseconds
reserved
CCITT J,17
STA013 - STA013B - STA013T
mode specified
emphasis specified
17/38