AS5134
Datasheet - D e t a i l e d D e s c r i p t i o n
7.5 Serial 2-Wire Differential SSI Connection
With the addition of a RS-422 / RS-485 transceiver, a fully differential data transmission, according to the 21-bit SSI interface standard is
possible. To be compatible with this standard, the DCLK signal must be inverted. This is done by reversing the Data+ and Data- lines of the
transceiver.
Note: This type of transmission is read-only.
Figure 7. 2-Wire SSI Read-only Mode
+5V
VDD
VDD
MAX 3081 or similar
C2
VDD
Output
DCLK
D+
D-
D-
D+
DCLK
100nF
VSS
Input
DI
D+
D-
D+
D-
DIO
V S S
VSS
DCLK
1
2
3
4
5
6
7
8
20
21
timeout
DI
D15
D14
D1
t TO
D0
Refer to Table 6 on page 9 for information on 2-or 3-wire Read-only Serial Bit Sequence (21-bit read).
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