l99h01 STMicroelectronics, l99h01 Datasheet - Page 33

• Manufacturer Part Number: l99h01
• Description: Motor Bridge Driver For Automotive Applications
• Manufacturer: STMicroelectronics

L99H01
4.2.1
4.2.2
Table 24.
Table 25.
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.
Table 26.
Comments:
●
●
OpCode definition
Table 27.
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.
MSB
GL_ER
OC1
15
15
OC1
OCx: Operating code
Ax: Address
OC1
0
0
1
1
OC0
Op code
14
FE STK_RESET_Q TSD TW UV OV WDTO D7 D6 D5 D4 D3 D2 D1 D0
14
DI
DO
Command byte
Operating code definition
A5
13
Command byte
OC0
OC0
A4
12
Global Status byte
13
0
1
0
1
A3
11
A5
Doc ID 15567 Rev 3
A2
10
12
A1
9
11
Command byte
A4
10
A0
8
9
D7
<Read Device Information>
7
A3
D6
<Clear Status>
8
<Write Mode>
<Read Mode>
Address
6
Functional description of the SPI
Meaning
D5
7
5
A2
DI - data byte
6
D4
4
DO - data byte
5
D3
3
4
A1
D2
3
2
2
D1
1
1
A0
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LSB
D0
0
0