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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： | 44/71页 |
| 文件大小： | 304K |
| 代理商： | TDA9874APS/V2 |
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2000 Aug 04
49
Philips Semiconductors
Product specication
Digital TV sound demodulator/decoder
TDA9874A
7.4.7
TEST REGISTER 2 (TR2)
This register contains, as a binary number, the highest
subaddress used for slave receiver registers.
The first version will have the identification 0010 1101.
Table 86 Test register 2 (subaddress 252)
7.4.8
TEST REGISTER 1 (TR1)
This register contains, as a binary number, the highest
subaddress used for slave transmitter (status) registers.
The first version will have the identification 0000 0111.
Table 87 Test register 1 (subaddress 253)
7.4.9
DEVICE IDENTIFICATION CODE (DIC)
There will be several devices in the digital TV sound
processor family, with TDA9874A being the second
member. This byte is used to identify the individual family
members.
The first version will have the identification 0001 0001.
Table 88 Device identication code (subaddress 254)
7.4.10
SOFTWARE IDENTIFICATION CODE (SIC)
It is likely that during the life time of this family of devices
several versions of the DSP software will be made, e.g. to
incorporate new application concepts, respond to
customer wishes, etc. This byte is used to identify the
different releases.
The first version will have the identification 0000 0010.
Table 89 Software identication code (subaddress 255)
8I2S-BUS DESCRIPTION
The digital audio interface of the TDA9874A consists of a
serial audio output and associated clock signals. It can be
used to supply digital audio signals from received
TV programs to a suitable output device, e.g. a DAC or an
AES/EBU transmitter.
Two serial audio formats are supported at the digital audio
interface, the I2S-bus format and a very similar
MSB-aligned format. The difference is illustrated in Fig.8.
In both formats the left audio channel of a stereo sample
pair is output first, and is on the Serial Data line (SDO)
when the Word Select line (WS) is at LOW level. Data is
written on the trailing edge of SCK and read on the leading
edge of SCK. The most significant bit is sent first.
After Power-on reset, the outputs of the digital audio
interface are 3-stated to reduce EMC and allow for
combinations with other ICs. If an output is desired, it has
to be activated by means of an I2C-bus command.
When the output is enabled, serial audio data can be taken
from pin SDO. Depending on the signal source, switch and
matrix positions, the output can be either mono, stereo or
dual language.
The Word Select output (WS) is clocked with the audio
sample frequency of 32 kHz. The Serial Clock output
(SCK) is clocked at a frequency of 2.048 MHz. This means
that there are 64 clock pulses per pair of stereo output
samples, or 32 clock pulses per sample. There are
18 significant bits used on the Serial Data Output (SDO).
A symmetrical system clock output (SYSCLK) is available
from the TDA9874A as a master clock for external digital
audio devices. After Power-on reset, the clock is off. It can
be enabled and the output frequency set via an I2C-bus
command. Available output frequencies are 8.192, 12.288,
16.384 and 24.576 MHz.
76543210
B7
B6
B5
B4
B3
B2
B1
B0
76543210
B7
B6
B5
B4
B3
B2
B1
B0
76543210
B7
B6
B5
B4
B3
B2
B1
B0
76543210
B7
B6
B5
B4
B3
B2
B1
B0
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|---|---|
| TDA9874AH/V2 | AM/FM, AUDIO DEMODULATOR, PQFP44 |
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| TDA3653C/N2 | VERTICAL DEFLECTION IC, PSIP9 |
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| TDA3653CU | VERTICAL DEFLECTION IC, PSIP9 |
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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