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参数资料
| 型号： | TDA9874APS/V2 |
| 厂商： | NXP SEMICONDUCTORS |
| 元件分类： | 接收器 |
| 英文描述： | AM/FM, AUDIO DEMODULATOR, PDIP42 |
| 封装： | 0.600 INCH, PLASTIC, SDIP-42 |
| 文件页数： | 40/71页 |
| 文件大小： | 304K |
| 代理商： | TDA9874APS/V2 |
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2000 Aug 04
45
Philips Semiconductors
Product specication
Digital TV sound demodulator/decoder
TDA9874A
7.4.1
DEVICE STATUS REGISTER (DSR)
Table 73 Device status register (subaddress 0)
Table 74 Description of the device status register bits
76543210
P2IN
P1IN
RSSF
AMSTAT
VDSP
IDDUA
IDSTE
PFR
BIT
SYMBOL
DESCRIPTION
7
P2IN
Input from Port 2: this bit reects the status of the general purpose port pin P2;
see Section 7.3.3. If bit P2IN = 1 the general purpose port pin P2 is at HIGH level.
If bit P2IN = 0 the general purpose port pin P2 is at LOW level.
6
P1IN
Input from Port 1: this bit reects the status of the general purpose port pin P1;
see Section 7.3.3. If bit P1IN = 1 then the general purpose port pin P1 is at HIGH level.
If bit P1IN = 0 the general purpose port pin P1 is at LOW level.
5
RSSF
Reserve sound switching ag: if bit RSSF = 1 it is a copy of bit C4 in the NICAM status
register (see Section 7.4.2). It indicates that the FM (or AM for standard L) sound
matches the digital transmission and auto-muting should be enabled. If bit RSSF = 0
auto-muting should be disabled, as analog and digital sound are different.
4
AMSTAT
Auto-mute status: if bit AMSTAT = 1 it indicates that the auto-muting function has
switched from NICAM to the program of the rst sound carrier (i.e. FM mono or AM in
NICAM L systems).
3
VDSP
Identication of NICAM sound: if bit VDSP = 1 it indicates that digital transmission is a
sound source. If bit VDSP = 0 it indicates that the transmission is either data or a
currently undened format.
2
IDDUA
Identication of FM dual sound; A2 systems: if bit IDDUA = 1 an FM dual-language
signal has been identied. When neither bit IDSTE = 1 nor bit IDDUA = 1 the received
signal is assumed to be FM mono (A2 systems only).
1
IDSTE
Identication of FM stereo; A2 systems: if bit IDSTE = 1 an FM stereo signal has been
identied (A2 systems only).
0
PFR
Power failure register: the power supply for the digital part of the device (VDDD1) has
temporarily been lower than the specied lower limit. If this is detected an initialization of
the device has to be carried out to ensure reliable operation.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TDA9874H | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Digital TV sound demodulator/decoder |
| TDA9875 | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Digital TV Sound Processor DTVSP |
| TDA9875A | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Digital TV Sound Processor DTVSP |
| TDA9875AH | 制造商:PHILIPS 制造商全称:NXP Semiconductors 功能描述:Digital TV Sound Processor DTVSP |
| TDA9875AH/V2,557 | 功能描述:IC SOUND PROC DGTL TV 64QFP RoHS:是 类别:集成电路 (IC) >> 线性 - 音频处理 系列:- 其它有关文件:STA321 View All Specifications 标准包装:1 系列:Sound Terminal™ 类型:音频处理器 应用:数字音频 安装类型:表面贴装 封装/外壳:64-LQFP 裸露焊盘 供应商设备封装:64-LQFP EP（10x10） 包装:Digi-Reel® 其它名称:497-11050-6 |
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