AMIS30421C4211G ONSEMI [ON Semiconductor], AMIS30421C4211G Datasheet - Page 35

• Manufacturer Part Number: AMIS30421C4211G
• Description: Micro-Stepping Stepper Motor Bridge Controller
• Manufacturer: ONSEMI [ON Semiconductor]

Status Register 3 (SR3)
can be used to retrieve the position in the translator table (see Table 7). It is a non−latched register meaning that the
microstepping position can be updated by the motor driver at any moment. Status Register 3 does not contain a parity bit.
Predriver Register 0 (PDRV0)
top MOSFET’s during t
Predriver Register 1 (PDRV1)
top MOSFET’s during t
Table 23. STATUS REGISTER 3
Table 24. STATUS REGISTER 3 PARAMETERS
Table 25. PREDRIVER REGISTER 0
Table 26. PREDRIVER REGISTER 0 PARAMETERS
Table 27. PREDRIVER REGISTER 1
Status Register 3 is located at address 0x07 and can only be read. Status Register 3 contains the microstepping position and
Predriver Register 0 is located at address 0x09 and can be used to set the current source for the gate charge of the external
Predriver Register 1 is located at address 0x0A and can be used to set the current source for the gate charge of the external
TOP_ION1[6:3]
TOP_ION1[2:0]
Address
Address
Address
Parameter
0x0A
0x07
0x09
Parameter
MSP[7:0]
Access
Access
Access
Reset
Reset
Reset
Data
Data
Data
Value
xxxx
xxxx xxxx
xxx
1
2
Value
(see Figure 11).
(see Figure 11).
Bit 7
Bit 7
Bit 7
R/W
R/W
R
0
0
0
Current source
Microstepping position
Value
value
Bit 6
Bit 6
Bit 6
Value
R/W
R/W
R
TOP_ION1[6:3]
TOP_ION2[6:3]
0
1
0
Predriver Register 0 (PDRV0)
Predriver Register 1 (PDRV1)
Status Register 3 (SR3)
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Defines the current source for the external top MOSFET’s during t
Current source can be calculated as next:
1 mA + (PDRV0[7:4] x 2 mA) + 0.25 mA + (PDRV0[2:0] x 0.25 mA)
Bit 5
Bit 5
Bit 5
R/W
R/W
R
0
0
0
Indicates the position within the translator table
35
Bit 4
Bit 4
Bit 4
R/W
R/W
R
0
1
0
MSP[7:0]
Description
Bit 3
Bit 3
Bit 3
Description
R/W
R/W
R
0
0
−
0
−
Bit 2
Bit 2
Bit 2
R/W
R/W
R
0
0
0
TOP_ION1[2:0]
TOP_ION2[2:0]
Bit 1
Bit 1
Bit 1
R/W
R/W
R
0
1
1
1
.
Bit 0
Bit 0
Bit 0
R/W
R/W
Info
p19
R
0
1
1
Info
p13