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參數(shù)資料
| 型號： | TDA9870A |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費家電 |
| 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)： | 74/88頁 |
| 文件大小： | 362K |
| 代理商： | TDA9870A |
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1998 Aug 10
74
Philips Semiconductors
Product specification
Digital TV Sound Processor (DTVSP)
TDA9870A
10.4
Slave transmitter mode
As a slave transmitter, the TDA9870A provides 13 registers with status information and data, a part of which is for Philips
internal purposes only. These registers can be accessed by means of subaddresses.
Table 88
General format for reading data from the TDA9870A
Table 89
Explanation of Tables 88 and 90
Reading of data can start at any valid subaddress. It is allowed to read more than 1 data byte per transmission from the
TDA9870A. In this situation, the subaddress is automatically incremented after each data byte, which results in reading
the sequence of data bytes from successive register locations, starting at SUBADDRESS.
Table 90
Format of a transmission using automatic incrementing of subaddresses
Note
1.
n data bytes with auto-increment of subaddresses.
Each data byte in a read sequence, except for the last one, is acknowledged with Am (acknowledge by the master).
The subaddresses ‘wrap around’ from decimal 255 to 0. If an attempt is made to read from a non-existing subaddress,
the device will send a data pattern of all ones, i.e. FF in hexadecimal notation.
S
SLAVE ADDRESS
0
ACK SUBADDRESS
ACK
Sr
SLAVE ADDRESS
1
ACK
DATA
NAm
P
BIT
FUNCTION
S
SLAVE ADDRESS
0
ACK
SUBADDRESS
Sr
1
DATA
NAm
Am
P
START condition
7-bit device address
data direction bit (write to device)
acknowledge (by the slave)
address of register to read from
repeated START condition
data direction bit (read from device)
data byte read from register
not acknowledge (by the master)
acknowledge (by the master)
STOP condition
S
SLAVE
ADDRESS
0
ACK
SUBADDRESS
ACK
Sr
SLAVE
ADDRESS
1
ACK
DATA BYTE
Am
(1)
DATA NAm 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 |
| TDA9874AH | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Digital TV sound demodulator/decoder |
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