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參數(shù)資料
| 型號(hào)： | TDA9874H |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 接收器 |
| 英文描述： | Digital TV sound demodulator/decoder |
| 中文描述： | AM/FM, AUDIO DEMODULATOR, PQFP44 |
| 封裝： | 14 X 14 MM, 2.20 MM HEIGHT, PLASTIC, SOT-205-1, QFP-44 |
| 文件頁數(shù)： | 17/56頁 |
| 文件大?。?/td> | 254K |
| 代理商： | TDA9874H |
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1998 Apr 27
17
Philips Semiconductors
Preliminary specification
Digital TV sound demodulator/decoder
TDA9874H
7.3
Slave receiver mode
As a slave receiver, the TDA9874H provides 24 registers for storing commands and data. Each register is accessed via
a so-called subaddress. A subaddress can be thought of as a pointer to an internal memory location.
Detailed descriptions of the slave receiver registers are given in Sections 7.3.1 to 7.3.20.
Table 8
I
2
C-bus; SLAVE ADDRESS/SUBADDRESS/DATA format
Table 9
Explanation of Table 8
It is allowed to send more than one data byte per transmission to the TDA9874H. In that case, the subaddress is
automatically incremented after each data byte, resulting in storing the sequence of data bytes at successive register
locations, starting at SUBADDRESS. A transmission can start at any valid subaddress. Each byte that is properly stored,
is acknowledged with A (acknowledge). If an attempt is made to write data to a non-existing subaddress, the device
acknowledges with NA (not acknowledge), therefore telling the I
2
C-bus master to abort the transmission. There is no
‘wrap-around’ of subaddresses.
Commands and data will be processed as soon as they have been received completely. Functions requiring more than
one byte will, thus, be executed only after all bytes for that function have been received. If the transmission is terminated
(STOP condition) before all bytes have been received, the incomplete data for that function are ignored.
Table 10
Format for a transmission employing auto-increment of subaddresses
Data patterns sent to the various subaddresses are not checked for being illegal or not at that address, except for the
level adjust functions.
Detection of a STOP condition without a preceding acknowledge bit is regarded as a bus error. In this case, the last
operation will not be executed.
S
SLAVE ADDRESS
0
A
SUBADDRESS
A
DATA
A/NA
P
BIT
FUNCTION
S
SLAVE ADDRESS
0
A
SUBADDRESS
DATA
A/NA
P
START condition
7-bit device address
data direction bit (write to device)
acknowledge
address of register to write to
data byte to be written into register
acknowledge or not acknowledge
STOP condition
S SLAVE ADDRESS 0 A SUBADDRESS A
DATA BYTE A
n data bytes with auto-increment of
subaddresses
DATA A/NA P
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TDA9875 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Digital TV Sound Processor DTVSP |
| TDA9875A | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Digital TV Sound Processor DTVSP |
| TDA9875AH | 制造商:PHILIPS 制造商全稱: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 類別:集成電路 (IC) >> 線性 - 音頻處理 系列:- 其它有關(guān)文件:STA321 View All Specifications 標(biāo)準(zhǔn)包裝:1 系列:Sound Terminal™ 類型:音頻處理器 應(yīng)用:數(shù)字音頻 安裝類型:表面貼裝 封裝/外殼:64-LQFP 裸露焊盤 供應(yīng)商設(shè)備封裝:64-LQFP EP（10x10） 包裝:Digi-Reel® 其它名稱:497-11050-6 |
| TDA9880 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Alignment-free multistandard vision and FM sound IF-PLL demodulator |
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