ams Datasheet Page 13
[v2-06] 2014-Oct-14 Document Feedback
AS5055A − SPI Interface
Figure 13:
SPI Timing
Note(s) and/or Footnote(s):
1. If the previous command was a READ ANGLE command (0x3FFF) a minimum time of readout has to be waited before sending a next
READ ANGLE command. (see “Operating Modes” on page 10)
SPI Wire Mode Selection
The SPI interface can be set in two different modes: 3-wire mode
or 4-wire mode.
Figure 14:
Wire Mode Selection
Parameter Description Min Max Unit
t
L
Time between CSn falling edge and CLK rising edge 50 ns
t
clk
Serial clock period 100 ns
t
clkL
Low period of serial clock 50 ns
t
clkH
High period of serial clock 50 ns
t
H
Time between last falling edge of CLK and rising edge
of CSn
50 ns
t
CSn
High time of CSn between two transmissions
(1)
50 ns
t
MOSI
Data input valid to falling clock edge 20 ns
t
MISO
CLK edge to data output valid 35 ns
t
OZ
Release bus time after CS rising edge. 50 ns
WM (Pin 14) Connection option
03-wire mode
14-wire-mode
