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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： | 18/71页 |
| 文件大小： | 304K |
| 代理商： | TDA9874APS/V2 |
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2000 Aug 04
25
Philips Semiconductors
Product specication
Digital TV sound demodulator/decoder
TDA9874A
7.3.5
CARRIER 1 FREQUENCY REGISTER
This register should not be used when applying ESP.
Three bytes are required to define a 24-bit frequency
control word to represent the sound carrier (i.e. mixer)
frequency. These three bytes are stored at
subaddresses 3 to 5; subaddress 3 being the high byte.
Execution of the command starts only after all bytes have
been received. If an error occurs, e.g. a premature STOP
condition, partial data for this function is ignored. The
relation of the sound carrier frequency and the control
word is given in the following formula:
where:
data = 24-bit frequency control word
fmix = desired sound carrier frequency
fclk = 12288 MHz (clock frequency of mixer)
224 = 16777216 (number of steps in a 24-bit word size).
Example: A 5.5 MHz sound carrier frequency will be
generated by sending the following sequence of data
bytes to the TDA9874A (data = 7509333 in decimal
notation or 729555 in hexadecimal notation):
0111 0010 1001 0101 0101 0101.
The default setting after Power-on reset is 0000 0000 for
all three bytes.
data
f
mix
f
clk
--------
2
24
×
=
Table 21 Carrier 1 frequency register high byte (subaddress 3)
Table 22 Carrier 1 frequency register middle byte (subaddress 4)
Table 23 Carrier 1 frequency register low byte (subaddress 5)
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
7.3.6
CARRIER 2 FREQUENCY REGISTER
This register should not be used when applying ESP. The
format is the same as for sound carrier 1, except
subaddresses 6 to 8 are used. Subaddress 6 holds the
high byte.
If this register is used, it will be for either the second
FM sound carrier of a terrestrial or satellite FM program or
for the NICAM sound carrier.
相关PDF资料 |
PDF描述 |
|---|---|
| TDA9874AH/V2 | AM/FM, AUDIO DEMODULATOR, PQFP44 |
| TDA3653CQ/N2 | VERTICAL DEFLECTION IC, PZIP9 |
| TDA3653C/N2 | VERTICAL DEFLECTION IC, PSIP9 |
| TDA3653B/N2 | VERTICAL DEFLECTION IC, PSFM9 |
| 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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