AMIS-30521 AMI Semiconductor, Inc., AMIS-30521 Datasheet - Page 19

• Manufacturer Part Number: AMIS-30521
• Description: Micro-stepping Motor Driver
• Manufacturer: AMI Semiconductor, Inc.

AMIS-30521 Micro-stepping Motor Driver
9.3 SPI Control Registers
All SPI control registers have Read/Write access and default to "0" after power-on or hard reset.
Table 13: SPI Control Register 0
Table 14: SPI Control Register 1
Table 15: SPI Control Register 2
Table 16: SPI Control Parameter Overview SLAT
Control Register 0 (CR0)
Address
01h
Address
02h
Address
03h
Symbol
SLAT
AMI Semiconductor – June 2007, M-20683-001
www.amis.com
Where:
R/W
Reset:
SM[2:0] :
CUR[4:0] :
Where:
R/W
Reset::
DIRCTRL
NXTP
PWMF
PWMJ
EMC[1:0]
Where:
R/W
Reset:
MOTEN
SLP
SLAG
SLAT
Content
Access
Reset
Data
Content
Access
Reset
Data
Content
Access
Reset
Data
Description
Speed Load Angle Transparency bit
Read and Write access
Status after power-On or hard reset
Step mode
Current amplitude
Read and Write access
Status after power-on or hard reset
Direction control
NEXT polarity
PWM frequency
PWM jitter
EMC slope control
Read and Write access
Status after power-On or hard reset
Motor enable
Sleep
Speed load angle gain
Speed load angle transparency
DIRCTRL
Bit 7
R/W
0
SM[2:0]
MOTEN
Bit 7
R/W
Bit 7
R/W
0
0
Bit 6
R/W
0
Control Register 2 (CR2)
NXTP
Bit 6
Control Register 1 (CR1)
R/W
SLP
Bit 6
R/W
0
0
Bit 5
R/W
0
SLAG
Bit 5
R/W
Bit 5
R/W
0
0
-
Bit 4
R/W
0
CUR[4:0]
SLAT
Bit 4
R/W
Bit 4
R/W
Structure
0
Structure
Structure
0
-
Bit 3
R/W
0
PWMF
Bit 3
Bit 3
R/W
R/W
19
0
-
0
Bit 2
R/W
0
PWMJ
Bit 2
Bit 2
R/W
R/W
0
0
-
Status
<SLAT> = 0
<SLAT> = 1
Bit 1
R/W
0
Bit 1
Bit 1
R/W
R/W
0
EMC[1:0]
0
-
Bit 0
R/W
0
Bit 0
R/W
Bit 0
R/W
0
-
0
Behavior
SLA is transparent
SLA is NOT transparent
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