AMIS−30422
Table 1. PIN LIST AND DESCRIPTION
Equivalent
Schematic
Name
MOTXP
GXTL
GXBR
MOTXN
GXTR
RSENSXP
RSENSXN
REF
Pin
2
Description
Type
Positive end of phase X−coil
Analog I/O
3
Gate of external NMOS FET of the X bridge top left side
Gate of external NMOS FET of the X bridge bottom right side
Negative end of phase X−coil
Analog Output
Analog Output
Analog I/O
4
5
6
Gate of external NMOS FET of the X bridge top right side
Resistor sense of the X bridge positive pin
Resistor sense of the X bridge negative pin
Maximum Coil Current Setting
Analog Output
Analog Input
Analog Input
Analog Input
Supply
7
8
9
Type 7
Type 8
VDD
11
12
13
14
15
16
17
18
21
22
23
24
25
26
27
29
30
31
32
33
34
35
36
40
41
42
43
44
45
48
Low voltage supply output (needs external decoupling capacitor)
Ground, heat sink
GND
Supply
VREGH
SLA
High voltage supply output
Analog output
Analog output
Digital Output
Digital Input
Digital Output
Digital Input
Digital Input
Digital Input
Digital Input
Digital Output
Digital Input
Digital Input
Digital Input
Analog Input
Analog Input
Analog Output
Analog I/O
Speed and Load Angle output
Type 6
Type 2 or 4
Type 5
ERRb
CLR
Error output
Clear input
WDb
Watchdog and Power On Reset output
Hold Current Input
Type 2 or 4
HOLDCUR
CLK
SPI Clock input
Type 1
Type 3
Type 1
Type 4
Type 1
Type 1
Type 1
CSb
SPI Chip Select input
DI
SPI Data input
DO
SPI Data output
TEST
NXT
Test input. To be tied to ground.
Next Microstep input
DIR
Direction input
RSENSYN
RSENSYP
GYTR
MOTYN
GYBR
GYTL
MOTYP
GYBL
GND
Resistor sense of the Y bridge negative pin
Resistor sense of the Y bridge positive pin
Gate of external NMOS FET of the Y bridge top right side
Negative end of phase Y−coil
Gate of external NMOS FET of the Y bridge bottom right side
Gate of external NMOS FET of the Y bridge top left side
Positive end of phase Y−coil
Analog Output
Analog Output
Analog I/O
Gate of external NMOS FET of the Y bridge bottom left side
Ground, heat sink
Analog Output
Supply
VBB
High voltage supply input
Supply
Type 9
CPN
Negative connection of charge pump capacitor
Positive connection of charge pump capacitor
Charge Pump filter capacitor
Analog I/O
CPP
Analog I/O
VCP
Analog I/O
GND
Ground, heat sink
Supply
GXBL
Gate of external NMOS FET of the X bridge bottom left side
Analog Output
1, 10, 19,
20, 28,
37, 38,
39, 46,
47
NC
Not connected or connect with ground
NOTE: Output type of WDb− and ERRb−pin is selectable through SPI.
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