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AS5147P Scheda tecnica(PDF) 13 Page - ams AG

Il numero della parte AS5147P
Spiegazioni elettronici  14-Bit On-Axis Magnetic Rotary Position Sensor with 12-Bit Binary
PDF  40 Pages
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Produttore elettronici  AMSCO [ams AG]
Homepage  http://www.ams.com
Logo AMSCO - ams AG

AS5147P Scheda tecnica(HTML) 13 Page - ams AG

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Page 13
[v1-01] 2015-May-12
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AS5147P − Detailed Description
Figure 13:
SPI Timing
SPI Transaction
An SPI transaction consists of a 16-bit command frame followed
by a 16-bit data frame. Figure 14 shows the structure of the
command frame.
Figure 14:
SPI Command Frame
To increase the reliability of communication over the SPI, an
even parity bit (PARC) must be generated and sent. A wrong
setting of the parity bit causes the PARERR bit in the error flag
register to be set. The parity bit is calculated from the 16-bit
command frame. The 16-bit command specifies whether the
transaction is a read or a write and the address. Figure 15 shows
the read data frame.
Parameter
Description
Min
Max
Units
tL
Time between CSn falling edge and CLK rising edge
350
ns
tclk
Serial clock period
100
ns
tclkL
Low period of serial clock
50
ns
tclkH
High period of serial clock
50
ns
tH
Time between last falling edge of CLK and rising
edge of CSn
tclk/2
ns
tCSn
High time of CSn between two transmissions
350
ns
tMOSI
Data input valid to falling clock edge
20
ns
tMISO
CLK edge to data output valid
51
ns
tOZ
Release bus time after CS rising edge.
10
ns
Bit
Name
Description
15
PARC
Parity bit (even) calculated on the command frame
14
R/W
0: Write
1: Read
13:0
ADDR
Address to read or write



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