參數(shù)資料
型號： TDA9875AH/V2,557
廠商： NXP SEMICONDUCTORS
元件分類： 消費(fèi)家電
英文描述： SPECIALTY CONSUMER CIRCUIT, PQFP64
封裝： PLASTIC, QFP
文件頁數(shù)： 81/96頁
文件大?。?/td> 324K
代理商： TDA9875AH/V2,557
1999 Dec 20
82
Philips Semiconductors
Product specication
Digital TV Sound Processor (DTVSP)
TDA9875A
10.4.2
NICAM STATUS REGISTER
The TDA9875A does not support the Extended Control Modes. Therefore, the program of the first sound carrier
(i.e. FM mono or AM) is selected for reproduction in case bit C3 is set to logic 1, independent of bit AMUTE in the NICAM
configuration register being set or not.
When a NICAM transmitter is switched off, the device will lose synchronization. In this situation the program of the first
sound carrier is selected for reproduction, independent of bit AMUTE being set or not.
Table 91 Subaddress 1
10.4.3
NICAN ERROR COUNT REGISTER
Bits B7 to B0 contain the number of errors occurring in the previous 128 ms period. The register is updated every 128 ms.
Table 92 Subaddress 2
BIT
NAME
VALUE
DESCRIPTION
7 (MSB)
C4
application control bits (C1 to C4 in the NICAM transmission)
6C3
5C2
4C1
3
OSB
1
indication that the device has both frame and C0 (16 frame) synchronization
0
the audio output from the NICAM part should be digital silence
2
CFC
1
indication of a conguration change at the 16 frame (C0) boundary
0
no conguration change
1
S/MB
1
indication of NICAM stereo mode
0
no NICAM stereo mode
0 (LSB)
D/SB
1
indication NICAM dual mono mode
0
no NICAM dual mono mode
BIT
NAME
VALUE
DESCRIPTION
7 (MSB)
B7
number of errors
6B6
5B5
4B4
3B3
2B2
1B1
0 (LSB)
B0
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