AS5030
Datasheet - D e t a i l e d D e s c r i p t i o n
7.4 Serial 2-Wire Connection (R/W Mode)
By connecting the configuration input C2 to VDD, the AS5030 is configured to 2-wire data transmission mode.
Only Clock (CLK) and Data (DIO) signals are required. A Chip Select (CS) signal is automatically generated by the DX output, when a time-out
of CLK occurs (typ. 20μs).
Note: Read-only mode is also possible in this configuration.
Figure 8. SSI R/W Mode 2-wire Data Transmission
+5 V
VDD
15
13
VDD
9
DX
C2
VDD
11
CS
Micro
Controller
Output
I/O
10
12
CLK
DI O
AS5030
100n
VSS
C1
14
VSS
3
VSS
Figure 9. Timing Diagram in 2-wire SSI Mode
wait cycle
command phase
data phase
(> 500 ns)
CLK
1
2
3
4
5
6
7
8
22
DX
CS
t0
t1
DIO read
DIO write
CMD4
CMD 3
CMD2
CMD 1
t6
CMD 0
t5
D 15
D 14
D0
www.ams.com/AS5030
Revision 2.4
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