- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄36338 > 935263704557 (NXP SEMICONDUCTORS) AM/FM, AUDIO DEMODULATOR, PQFP44 PDF資料下載
參數(shù)資料
| 型號： | 935263704557 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 接收器 |
| 英文描述： | AM/FM, AUDIO DEMODULATOR, PQFP44 |
| 封裝： | PLASTIC, QFP-44 |
| 文件頁數(shù)： | 18/71頁 |
| 文件大?。?/td> | 304K |
| 代理商： | 935263704557 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁當(dāng)前第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁第65頁第66頁第67頁第68頁第69頁第70頁第71頁
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.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 935263704518 | AM/FM, AUDIO DEMODULATOR, PQFP44 |
| 935265290112 | AM/FM, AUDIO DEMODULATOR, PDIP42 |
| 93526374518 | FM, AUDIO DEMODULATOR, PQFP44 |
| 93526374557 | FM, AUDIO DEMODULATOR, PQFP44 |
| 935263897551 | 1-CH 10-BIT PROPRIETARY METHOD ADC, PARALLEL ACCESS, PQFP32 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| 935264217557 | 制造商:NXP Semiconductors 功能描述:SUB ONLY IC |
| 935267356112 | 制造商:NXP Semiconductors 功能描述:IC TEA1507PN |
| 935268081112 | 制造商:NXP Semiconductors 功能描述:SUB ONLY IC |
| 935268721125 | 制造商:NXP Semiconductors 功能描述:Buffer/Line Driver 1-CH Non-Inverting 3-ST CMOS 5-Pin TSSOP T/R |
| 935269304128 | 制造商:ST-Ericsson 功能描述:IC AUDIO CODEC W/TCH SCRN 48LQFP |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。