ST EVAL-L9177A, User Manual, Page: 13 / 20

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UM2263 Jumpers & connectors
18
5 Jumpers & connectors
5.1 Motherboard jumpers & connectors
Table 2. Motherboard jumpers and connectors
Name Description Type
J1 Microcontroller V
CC
selector
Jumper:
ON: Microcontroller is
supplied by L9177A
VCC regulator
OFF: Microcontroller is
externally supplied
J2 +5 V V
CC
output
Screw connector:
1: +5V
2: GND
J3 VDD standby connector
Jumper:
ON: VDD standby is
connect to
microcontroller
OFF: VDD standby is
disconnect by
microcontroller
J4 Main Power supply connector
Screw connector:
1: +VB
2: GND
J5 High-side driver output connector
Screw connector:
1: HS_OUT
2: GND
J6 5 V tracking regulator output
Screw connector:
1: +5 V traking
2: GND
J7 External key connector
Screw connector:
1: VB
2: Key in
J8 External key selector
Jumper:
ON: The external key
is disabled and the key
input of L9177A is
HIGH
OFF: The external key
is enabled
J9 Expansion connector Please see Figure 9
J10 Stepper motor output
Screw connector:
1: OUT A
2: OUT B