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参数资料
| 型号： | L9942XPTR |
| 厂商： | STMICROELECTRONICS |
| 元件分类： | 运动控制电子 |
| 英文描述： | STEPPER MOTOR CONTROLLER, 2.5 A, PDSO24 |
| 封装： | LEAD FREE, POWER, SSO-24 |
| 文件页数： | 19/40页 |
| 文件大小： | 664K |
| 代理商： | L9942XPTR |
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SPI - Control and Status Registers
L9942
5.6
Control, Status and Profile Register 6
The meaning of the different bits is as follows:
5.7
Status Register 7
The meaning of the different bits is as follows:
Table 18.
Control, Status and Profile Register 6
CLR
ST
(PWM)
Filter
Freq
ST
REF
ERR
Openload
Current Profile 8
Bit
12
11
10
9
8
7
6
5
4
3
2
1
0
Access
r w
r
r w
Reset
0
Name
CLR6
SST
FT
FRE
ST
RERR
OB
OA
I4
I3
I2
I1
I0
I4 I3 I2 I1 I0
These bits are loaded in register1 DAC Phase A or B if needed
See also parameter Table 11
OB OA
These bits indicate openload at bridges
RERR
This bit indicates if reference current is OK (150uA <IREF < 250uA), then is RERR=0.
ST
This bit indicates stall detection.
FRE
This bit sets frequency of PWM cycle. FRE=1 frequency 20kHz, FRE=0 frequency 30kHz
FT
This bit sets filter time in glitch filter. FT=0 TF =1.5us, FT=1 TF =2.5us
SST
This bit specifies output PWM to reflect same logical level like bit ST.
CLR6
This bit resets all bits to 0 in register 6.
Table 19.
Status Register 7
Bit
CLR
Temperature
VS Monitor
Overcurrent
Access
r w
r
Reset
0
Name
CLR7
TSD
TW
OV
UV
HSB2
HSB1
LSB2
LSB1
HSA2
HSA1
LSA2
LSA1
bit7 ... bit0
These bits indicate overcurrent in each lowside or highside power transistor.
1
overcurrent failure I > 2A
OV UV
These bits indicates failure at VS ( See also parameter Table 8)
01
Voltage at pin VS is too low.
10
Voltage at pin VS is too high.
TSD TW
These bits indicates temperature failure ( See also parameter Table 6)
01
Only for information set at temperature warning threshold.
10
In case of thermal shutdown all bridges are switched off. It has to reset by bit CLR7.
CLR7
This bit resets all bits to 0 in register7.
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