參數(shù)資料
型號(hào)： TDA9870A
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
封裝： SHRINK, PLASTIC, DIP
文件頁(yè)數(shù)： 42/88頁(yè)
文件大?。?/td> 362K
代理商： TDA9870A
1998 Aug 10
42
Philips Semiconductors
Product specification
Digital TV Sound Processor (DTVSP)
TDA9870A
10.3.11 R
EGISTER
14
10.3.11.1 Description
Set to logic 0. This bits have not been assigned to a
function.
10.3.12 R
EGISTER
15
10.3.12.1 Description
Set to logic 0. This bits have not been assigned to a
function.
10.3.13 R
EGISTER
16
10.3.13.1 Description
Set to logic 0. This bits have not been assigned to a
function.
10.3.14 R
EGISTER
17
10.3.14.1 Description
Set to logic 0. This bits have not been assigned to a
function.
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 34
Subaddress 18 (note 1)
Note
1.
The default setting at power-up is 11111111.
10.3.16 DAC
OUTPUT SELECT REGISTER
10.3.16.1 Description
This register is used to define both the signal source to be entered into the DAC and the mode of the digital matrix for
signal selection. The DAC is used for signal output from digital sources at analog outputs.
The bits DACGAIN1 and DACGAIN2 can introduce some extra gain at the input to the DAC. DACGAIN1 adds 3 dB and
DACGAIN2 adds 6 dB of gain, respectively.
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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