參數(shù)資料
型號： TB2934HQ
元件分類： 音頻／視頻放大
英文描述： 45 W, 4 CHANNEL, AUDIO AMPLIFIER, PZFM25
封裝： 1 MM PITCH, PLASTIC, HZIP-25
文件頁數(shù)： 40/40頁
文件大?。?/td> 574K
代理商： TB2934HQ
TB2934HQ
2006-04-28
9
(2)
Description for turn on diagnosis
This IC can determine whether the conditions listed below occur or not at turn ON:
-Short to GND
-Short to VCC
-Output to output short
-Speaker open
As first “switch on”, the write data is sent to “turn ON” the IC.
If the turn on diagnostic is activated at this time, the write data, with the diagnostic cycle byte: IB1
D6 set at 1, is sent at the same time
The result of self diagnosis can be obtained from the read data sent after the turn on diagnostic
data permitted time, as below Figure:
Turn On diagnostic
acquisition time (80 ms typ.)
Turn On diagnostic DATA
permitted time
READ DATA
WRITE DATA
Permanent diagnostic
enable
READ DATA
FAULT
event
Permanent diagnostic
DATA permitted time
Pin10
ripple
voltage
Figure 4
Diagnosis Timing Chart
Pin10
ripple
voltage
Turn On diagnostic
acquisition time
(80 ms typ.)
READ DATA
Turn On diagnostic
between On and Off time
(100 ms typ.)
WRITE DATA
Set the
diagnostic
l
WRITE DATA
To become standby off
(turning or power ON)
READ DATA
Figure 5
Number of Times Turn ON Diagnosis Timing Chart
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