參數(shù)資料
型號(hào): TDA7564BH
廠商: STMICROELECTRONICS
元件分類: 音頻/視頻放大
英文描述: 50 W, 4 CHANNEL, AUDIO AMPLIFIER, ZFM25
封裝: ROHS COMPLIANT, FLEXIWATT-25
文件頁數(shù): 22/34頁
文件大小: 493K
代理商: TDA7564BH
TDA7564B
Examples of bytes sequence
Doc ID 12734 Rev 3
10
Examples of bytes sequence
1 - Turn-on diagnostic - Write operation
2 - Turn-on diagnostic - Read operation
The delay from 1 to 2 can be selected by software, starting from 1 ms
3a - Turn-on of the power amplifier with 26dB gain, mute on, diagnostic defeat, High eff.
mode both channels.
.
3b - Turn-off of the power amplifier
4 - Offset detection procedure enable
5 - Offset detection procedure stop and reading operation (the results are valid only for the
offset detection bits (D2 of the bytes DB1, DB2, DB3, DB4)
.
The purpose of this test is to check if a D.C. offset (2V typ.) is present on the outputs,
produced by input capacitor with anomalous leakage current or humidity between pins.
The delay from 4 to 5 can be selected by software, starting from 1ms
6 - Current detection procedure start (the AC inputs must be with a proper signal that
depends on the type of load)
Current detection reading operation (the results valid only for the current sensor detection
bits - D5 of the bytes DB1, DB2, DB3, DB4)
.
During the test, a sinus wave with a proper amplitude and frequency (depending on the
loudspeaker under test) must be present. The minimum number of periods that are
needed to detect a normal load is 5.
The delay from 6 to 7 can be selected by software, starting from 1ms.
Start
Address byte with D0 = 0
ACK
IB1 with D6 = 1
ACK
IB2
ACK
STOP
Start Address byte with D0 = 1 ACK
DB1
ACK
DB2
ACK
DB3
ACK
DB4 ACK STOP
Start
Address byte with D0 = 0
ACK
IB1
ACK
IB2
ACK
STOP
X000000X
XXX1X011
Start
Address byte with D0 = 0
ACK
IB1
ACK
IB2
ACK
STOP
X0XXXXXX
XXX0XXXX
Start
Address byte with D0 = 0
ACK
IB1
ACK
IB2
ACK
STOP
XX1XX11X
XXX1X0XX
Start Address byte with D0 = 1 ACK
DB1
ACK
DB2
ACK
DB3
ACK
DB4
ACK STOP
Start
Address byte with D0 = 0
ACK
IB1
ACK
IB2
ACK
STOP
XX01111X
XXX1X1XX
Start Address byte with D0 = 1 ACK DB1 ACK
DB2
ACK
DB3
ACK
DB4
ACK STOP
相關(guān)PDF資料
PDF描述
TDA7564B 50 W, 4 CHANNEL, AUDIO AMPLIFIER, ZFM25
TDA7564BPDTR 50 W, 4 CHANNEL, AUDIO AMPLIFIER, PDSO36
TDA7564BPD 50 W, 4 CHANNEL, AUDIO AMPLIFIER, PDSO36
TDA7564 46 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25
TDA7565 40 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM27
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
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