User Manual
– AS5045B-AB
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Revision 1.1 / 05.07.2013
page 12/15
4.4 Daisy chain mode
By using more than one adapter board, a setup in daisy chain mode is possible.
Note:
In this mode capacitor C3 (Fig.12) must be disconnected when using the 1nF capacitor shown
in Fig.9. or directly replaced by this capacitor.
The serial data of all connected devices is read from the DO pin of the first device in the chain. The
Prog pin of the last device in the chain should be connected to VSS. The length of the serial bit stream
increases with every connected device (board) by n * (16+1) bits.
Due to R = 100R and C = 1nF, the CLK is limited the maximum 1MHz.
Figure 9:
Using Daisy-Chain mode with the adapter board
AS5040
J2
J1
GND
PWM
Ind
B
A
Mag
INC
GND
Prg
5V
3V3
CSn CLK
DO
Mag
DEC
N
S
AS5040
J2
J1
GND
PWM
Ind
B
A
Mag
INC
GND
Prg
5V
3V3
CSn CLK
DO
Mag
DEC
N
S
+5V
GND
Regulated
Power
Supply
MCU
out
in
VDDp
out
100R
1nF
next Board
