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L99H01 датащи(PDF) 32 Page - STMicroelectronics

номер детали L99H01
подробное описание детали  Motor bridge driver for automotive applications
PDF  53 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L99H01 датащи(HTML) 32 Page - STMicroelectronics

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Functional description of the SPI
L99H01
32/53
DocID15567 Rev 6
4.2.1
Command byte
Each communication frame starts with a command byte. It consists of an operating code
which specifies the type of operation (<Read>, <Write>, <Fault Reset>,
<Read Device Information>) and a 6-bit address.
Comments:
•
OCx: Operating code
•
Ax: Address
4.2.2
OpCode definition
The <Write Mode> and <Read Mode> operations allow access to the RAM of the device.
The <Clear Status> operation is used to read a status register and subsequently clear its
content.
<Read Device Information> allows access to the ROM area which contains device related
information such as <ID-Header>, <Product Code>, <Silicon Version and Category> and
<SPI-frame-ID>.
Table 24. DI
Command byte
DI - data byte
15
14
13
12
11
10
9876
543
210
OC1
OC0
A5
A4
A3
A2
A1
A0
D7
D6
D5
D4
D3
D2
D1
D0
Table 25. DO
Global Status byte
DO - data byte
15
14
13
12
11
10
9
8
76543210
GL_ER
FE
STK_RESET_Q
TSD TW UV OV WDTO D7 D6 D5 D4 D3 D2 D1 D0
Table 26. Command byte
Command byte
MSB
LSB
Op code
Address
OC1
OC0
A5
A4
A3
A2
A1
A0
Table 27. Operating code definition
OC1
OC0
Meaning
0
0
<Write Mode>
0
1
<Read Mode>
1
0
<Clear Status>
1
1
<Read Device Information>



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