參數(shù)資料
型號(hào)： TDA9875
廠商： NXP SEMICONDUCTORS
元件分類： 消費(fèi)家電
英文描述： Digital TV Sound Processor DTVSP
中文描述： SPECIALTY CONSUMER CIRCUIT, PDIP64
文件頁數(shù)： 45/92頁
文件大?。?/td> 279K
代理商： TDA9875
1998 Feb 13
45
Philips Semiconductors
Preliminary specification
Digital TV Sound Processor (DTVSP)
TDA9875
10.3.14 NICAM
UPPER ERROR LIMIT REGISTER
10.3.14.1 Description
When the auto-mute function is enabled (bit AMUTE in the NICAM configuration register) and the NICAM bit error count
is higher than the value contained in this register, the signal of the first sound carrier (i.e. FM mono or AM sound) is
selected for reproduction.
The difference between upper and lower error limit constitutes a hysteresis to avoid frequent switching between NICAM
and the program on the first sound carrier.
10.3.14.2 Definition
Table 35
Subaddress 17 (notes 1 and 2)
Notes
1.
2.
The default setting at power-up is 01010000.
The lower bit error rate limit
subaddress 16
×
1.74
×
10
5
.
10.3.15 A
UDIO MUTE CONTROL REGISTER
10.3.15.1 Description
When any of these bits are set HIGH, the corresponding pair of output channels will be muted. A LOW bit allows normal
signal output.
There is a soft-mute facility for the Main and Auxiliary output channels to provide click-free muting independent of the
volume control. This is switched on/off by bits MUTMAIN and MUTAUX.
10.3.15.2 Definition
Table 36
Subaddress 18 (note 1)
Note
1.
The default setting at power-up is 11111111.
MSB
LSB
B7
B6
B5
B4
B3
B2
B1
B0
BIT
NAME
MUTI
2
S2
MUTI
2
S1
MUTDAC
MUTLINE
MUTSC2
MUTSC1
MUTAUX
MUTMAIN
DESCRIPTION
mute I
2
S2 outputs
mute I
2
S1 outputs
mute internal DAC
mute line outputs
mute SCART 2 outputs
mute SCART 1 outputs
mute Auxiliary outputs
mute Main channels
7 (MSB)
6
5
4
3
2
1
0 (LSB)
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TDA9875A 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Digital TV Sound Processor DTVSP
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