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SABRE-LL-I Datasheet(PDF) 128 Page - STMicroelectronics

Part # SABRE-LL-I
Description  Combo motor driver
PDF  141 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

SABRE-LL-I Datasheet(HTML) 128 Page - STMicroelectronics

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Serial interface
SABRE-LL-I
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Figure 43.
SPI read transaction
23.2
Write transaction
A write transaction (see Figure 44) is always started by the master lowering the signal on
nSS pin. The other bits are then sent on the mosi pin with this order:
1.
7-bit representing the address of the register that must be written (MSB first [A6…A0]);
2.
2-bit that must be “01” for a read transaction;
3.
2-bit representing S.A.B.Re IC address;
4.
1-bit reserved for future use that must be set at “0”.
The data to be written (MSB first D15…D0) are then read from mosi pin. The length of data
field can be 16 or 20 bits, but only the first 16-bit are accepted as valid data. Data is latched
on rising edge of the nSS line.
Figure 44.
SPI write transaction
The SPI input and output timing definitions are shown in the following tables:
nSS
sclk
mosi
miso
A6
A0
D15
D0
Register
Address field
Data Field
Control
Field
IC
address
High Impedance
nSS
sclk
mosi
miso
A6
A0
D15
D0
Register
Address field
Data Field
Control
Field
IC
addres
High Impedance



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