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參數(shù)資料
| 型號(hào)： | TDA9870A |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費(fèi)家電 |
| 英文描述： | Digital TV Sound Processor DTVSP |
| 中文描述： | SPECIALTY CONSUMER CIRCUIT, PDIP64 |
| 封裝： | SHRINK, PLASTIC, DIP |
| 文件頁數(shù)： | 29/88頁 |
| 文件大?。?/td> | 362K |
| 代理商： | TDA9870A |
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1998 Aug 10
29
Philips Semiconductors
Product specification
Digital TV Sound Processor (DTVSP)
TDA9870A
10.3
Slave receiver mode
As a slave receiver, the TDA9870A provides 46 registers for storing commands and data. These registers are accessed
via so-called subaddresses. A subaddress can be thought of as a pointer to an internal memory location.
Table 9
I
2
C-bus; slave address, subaddress and data format
Table 10
Explanation of Table 9
It is allowed to send more than one data byte per transmission to the TDA9870A. In this event, 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 is acknowledged with
ACK (acknowledge).
There is no ‘wrap-around’ of subaddresses.
Commands and data are processed as soon as they have been completely received. 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 is ignored.
Table 11
Format for a transmission employing auto-increment of subaddresses
Note
1.
n data bytes with 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
functions of volume, bass, treble control, bass boost and level adjust.
Detection of a STOP condition without a preceding acknowledge bit is regarded as a bus error. The last operation will
not then be executed.
S
SLAVE ADDRESS
0
ACK
SUBADDRESS
ACK
DATA
ACK
P
BIT
FUNCTION
S
SLAVE ADDRESS
0
ACK
SUBADDRESS
DATA
P
START condition
7-bit device address
data direction bit (write to device)
acknowledge by slave
address of register to write to
data byte to be written into register
STOP condition
S
SLAVE
ADDRESS
0
ACK
SUBADDRESS
ACK
DATA BYTE A
(1)
DATA
ACK
P
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| TDA9873 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Multistandard dual carrier stereo sound decoder |
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| TDA9873HS | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Multistandard dual carrier stereo sound decoder |
| TDA9874A | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Digital TV sound demodulator/decoder |
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