參數(shù)資料
型號(hào)： TDA9875AH
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, PQFP64
封裝： PLASTIC, QFP
文件頁(yè)數(shù)： 32/96頁(yè)
文件大?。?/td> 296K
代理商： TDA9875AH
1999 Dec 20
32
Philips Semiconductors
Product specification
Digital TV Sound Processor (DTVSP)
TDA9875A
10.3
Slave receiver mode
As a slave receiver, the TDA9875A 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 10
I
2
C-bus; slave address, subaddress and data format
Table 11
Explanation of Table 10
It is allowed to send more than one data byte per transmission to the TDA9875A. 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 are ignored.
Table 12
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
then not 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
相關(guān)PDF資料
PDF描述
TDA9875 Digital TV Sound Processor DTVSP
TDA9965 12-bit, 5.0 V, 30 Msps analog-to-digital interface for CCD cameras
TDZ10 Low Current Operation at 250 ，Low Reverse Leakage,Low Noise Zener Diode
TDZ11 Low Current Operation at 250 ，Low Reverse Leakage,Low Noise Zener Diode
TDZ12 Low Current Operation at 250 ，Low Reverse Leakage,Low Noise Zener Diode
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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