l99h01 STMicroelectronics, l99h01 Datasheet - Page 38

• Manufacturer Part Number: l99h01
• Description: Motor Bridge Driver For Automotive Applications
• Manufacturer: STMicroelectronics

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Detailed byte description of status register (StatReg0)
The read operation starts always with the command byte followed by 1 data byte. The
content of the send data byte has to be ‘0’. The content of the addressed register is shifted
out at DO within the same frame (‘in-frame response’).
The device uses 1 status register to monitor the state of the device.
address and the content of the register.
Table 31.
Comments:
●
Table 32.
●
●
<default>
Name
Bit
DS_MON[3:0]: If max drain source voltage exceeds the defined thresholds, the
DS_MON are set and the corresponding drivers go to sink mode. The DS_MON bits
have to be cleared through a software reset to reactivate the drivers.
OT_EXT: Depending on EXT_TS bit following two meanings exist:
–
–
CP_LOW: If a charge pump output voltage low occurs, all gate drivers must be
switched-off (resistive low). The CP_LOW bit has to be cleared through a software
reset to reactivate the gate driver.
EXT_TS = low (active off):
TS/ACT_OFF pin is used as input to switch the H-bridge in tristate and back.
Details are discribed in
EXT_TS = high (thermal sensor interface):
TS/ACT_OFF pin is used as thermal sensor interface for external temperature
diodes. Details are discribed in
DS_MON_3
Address 0<00(hex)>:StatReg 0 - read only
DS_MON - drivers relations
7
0
DS_MON_3
DS_MON_2
DS_MON_1
DS_MON_0
Register
DS_MON_2
6
0
Doc ID 15567 Rev 3
Chapter
DS_MON_1
Chapter
3.12.1.
5
0
3.12.2.
DS_MON_0
4
0
Deactivated driver
High-side 2
High-side 1
Low-side 2
Low-side 1
X
3
0
Table 31
X
2
0
OT_EXT CP_LOW
1
0
shows the
L99H01
0
0