![Rohm LAPIS ML22594 MB Series Скачать руководство пользователя страница 54](http://html1.mh-extra.com/html/rohm/lapis-ml22594-mb-series/lapis-ml22594-mb-series_manual_1478305054.webp)
FEDL22594-06
ML22594-XXX
54/73
16. SAFE command
command
1
1
0
1
0
0
0
0
TM2
TM1
TM0
TSD1 TSD0 BLD2
BLD1
BLD0
The SAFE command is sets the settings for the low-voltage detection and temperature detection functions.
The BLD2–0 bits are used to set the power supply voltage detection level. The judgment voltage can be
selected from among six levels from 2.7 to 4.0 V. The power supply voltage is monitored each time it reaches
the value set by TM2–0, and if the power supply voltage reaches or falls below the set detection voltage two
times or more, the ERR pin outputs a ”H” level and the RDSTAT command’s BLDERR bit is set to ”1”.
If the ERR pin is set to a ”H” level, check the error contents using the RDSTAT command. If the BLDERR bit
is at ”1”, it is possibly a power supply related failure.
BLD2
BLD1
BLD0
Judgment power supply voltage
0
0
0
OFF
0
0
1
2.7V
±
5% (initial value)
0
1
0
3.0V
±
5%
0
1
1
3.3V
±
5%
1
0
0
3.6V
±
5%
1
0
1
4.0V
±
5%
1
1
0
(4.0V
±
5%)
1
1
1
(4.0V
±
5%)
The TSD1–0 bits are used to set the temperature detection level. Tj=140
°
C or OFF can be selected as the
judgment temperature. The temperature is monitored each time it reaches the value set by TM2–0, and if the
temperature reaches or exceeds the set value two times or more, the ERR pin outputs a ”H” level and the
RDSTAT command’s TSDERR bit is set to ”1”.
If the ERR pin is set to a ”H” level, check the error contents using the RDSTAT command. If the TSDERR bit
is at ”1”, reduce the volume using the AVOL command or put the analog section into the power down state
using the AMODE command.
TSD1
TSD0
Judgment temperature (Tj)
0
0
OFF
0
1
Setting prohibited
1
0
Setting prohibited
1
1
140
±
10
°
C (initial valle,)
The judgment temperature(Tj) is 140
±
10
°
C.
This LSI is beyond Tj=130
°
C in the operating temperature(-40
°
C -
+150
°
C) depending on a operating condition and occurs by a high temperature error.
The ambient temperature
at that case is as follows.
Power supply(D
VDD
=SP
VDD
)
Power dissipation(P
D
)
Amient temperature(Ta)
4.5V
0.686W
Not detect in the operating temperature
5.0V
0.861W
detect more than 104
°
C
5.5V
1.055W
detect more than 98
°
C
*
θ
ja
=
31.2[
°
C/W](JEDEC 2layers(refer to 67pages)), 1W/8ohm-Speaker