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STA014B 数据表(PDF) 17 Page - STMicroelectronics

部件名 STA014B
功能描述  MPEG 2.5 LAYER III AUDIO DECODER WITH ADPCM AND SRS WOWO POSTPROCESSING CAPABILITY
PDF  45 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

STA014B 数据表(HTML) 17 Page - STMicroelectronics

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REQ_POL
Address: 0x0C (12)
Type: R/W
Software Reset: 0x01
Hardware Reset: 0x00
The REQ_POL registers is used to program the
polarity of the DATA_REQ line.
MSB
LSB
b7
b6
b5
b4
b3
b2
b1
b0
00000
001
Default polarity (the source sends data when the
DATA_REQ line is high)
MSB
LSB
b7
b6
b5
b4
b3
b2
b1
b0
00000
101
Inverted polarity (the source sends data when the
DATA_REQ line is low)
SCLK_POL
Address: 0x0D (13)
Type: R/W
Software Reset: 0x04
Hardware Reset: 0x04
MSB
LSB
b7
b6
b5
b4
b3
b2
b1
b0
XXXXX
0
0
0
(1)
100
(2)
X = don’t care
SCLK_POL is used to select the working polarity
of the Input Serial Clock (SCKR).
(1) If SCLK_POL is set to 0x00, the data (SDI)
are sent with the falling edge of SCKR
and sampled on the rising edge.
(2) If SCLK_POL is set to 0x04, the data (SDI)
are sent with the rising edge of SCKR and
sampled on the falling edge.
ERROR_CODE
Address: 0x0F (15)
Type: RO
Software Reset: 0x00
Hardware Reset: 0x00
MSB
LSB
b7
b6
b5
b4
b3
b2
b1
b0
X
X
EC5
EC4
EC3
EC2
EC1
EC0
X = don’t care
ERROR_CODE register contains the last error
occourred if any. The codes can be as follows:
Code
Description
0x00
No error since the last SW or HW Reset
0x01
CRC Failure
0x02
DATA not available
0x04
Ancillary data not read
0x10
Audio synch word not found
0x2X
MPEG Header error
0x3X
MPEG Decoding errors
SOFT_RESET
Address: 0x10 (16)
Type: WO
Software Reset: 0x00
Hardware Reset: 0x00
MSB
LSB
b7
b6
b5
b4
b3
b2
b1
b0
XXXXXXX
0
1
X = don’t care; 0 = normal operation; 1 = reset
When this register is written, a soft reset occours.
The STA014 core command register and the in-
terrupt register are cleared. The decoder goes in
to idle mode.
PLAY
Address: 0x13 (19)
Type: R/W
Software Reset: 0x01
Hardware Reset: 0x01
MSB
LSB
b7
b6
b5
b4
b3
b2
b1
b0
XXXXXXX
0
1
X = don’t care; 0 = normal operation; 1 = play
The PLAY command is handled according to the
state of the decoder, as described in section 2.5.
PLAY only becomes active when the decoder is
in DECODE mode.
STA014-STA014B-STA014T
17/45



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