TA600032-EN0/0
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4.6
'4-wire serial' interface
The connection between "G9006" and "Local CPU" uses "4-wire serial" interface.
The "G9006" and the "Local CPU" are wired on the same board.
"MISO" pin is pulled up to stabilize the output level.
Pull-up resistance value is 5 to 10 kΩ.
4.6.1
Single connection circuit
Both "Slave number" pins (A0, A1) can be connected directly to GND to set the "4-wire serial" communication format "Slave
number" bit to "00b".
4.6.2
Multiple connection circuit
Four "G9006" units can be multidrop connected to one SS signal and controlled from one "Local CPU".
Depending on the connection of the "Slave number" pins (A0, A1), set the "Slave number" (SN) bits of the "Control command".
When connecting five or more "G9006", prepare an additional "SS" signal for "Local CPU".
SS
SCK
MOSI
MISO
Local CPU
G9006
A0
SS
SCK
MOSI
MISO
A1
GND
VDD
5
～
10 kΩ
SS
SCK
MOSI
MISO
Local CPU
G9006 (0)
A0
SS
SCK
MOSI
MISO
A1
GND
VDD
G9006 (1)
G9006 (2)
G9006 (3)
VDD
A0
SS
SCK
MOSI
MISO
A1
A0
SS
SCK
MOSI
MISO
A1
A0
SS
SCK
MOSI
MISO
A1
5
～
10 kΩ
