參數(shù)資料
型號(hào)： TDA9874H
廠商： NXP SEMICONDUCTORS
元件分類： 接收器
英文描述： Digital TV sound demodulator/decoder
中文描述： AM/FM, AUDIO DEMODULATOR, PQFP44
封裝： 14 X 14 MM, 2.20 MM HEIGHT, PLASTIC, SOT-205-1, QFP-44
文件頁(yè)數(shù)： 31/56頁(yè)
文件大?。?/td> 254K
代理商： TDA9874H
1998 Apr 27
31
Philips Semiconductors
Preliminary specification
Digital TV sound demodulator/decoder
TDA9874H
7.3.17
A
NALOG
O
UTPUT
S
ELECT
R
EGISTER
(AOSR)
This register is used to define both the signal source to be output at the analog outputs and the output channel selector
mode.
The DAC outputs are automatically muted, in case one of the analog inputs is selected for output.
R
+
2
The
position of the matrix applies only to the DAC outputs, it is not available for analog input signals.
The default setting at power-up is 00000000.
Table 43
Analog Output Select Register (subaddress 20)
Table 44
Description of AOSR bits
Table 45
Output channel selection mode
Table 46
Signal source selection
7
6
5
4
3
2
1
0
CSM2
CSM1
CSM0
SS1
SS0
BIT
SYMBOL
CSM2
CSM1
CSM0
SS1
SS0
DESCRIPTION
7
6
5
4
3
2
1
0
This bit is not used and should be set to logic 0.
Output channel selection mode.
These 3 bits select the output channel selection
mode; see Table 45.
These 2 bits are not used and should be set to logic 0.
Signal source.
These 2 bits select the signal source; see Table 46.
CSM2
CSM1
CSM0
L OUTPUT
R OUTPUT
0
0
0
0
1
0
0
1
1
0
0
1
0
1
0
L input
L input
R input
R input
R input
L input
R input
L input
SS1
SS0
SIGNAL SOURCE
0
1
1
0
0
1
DAC
external input
mono input
L
L
R
+
2
L
R
+
2
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