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L5965 데이터시트(PDF) 35 Page - STMicroelectronics

부품명 L5965
상세설명  Power management for automotive vision and radar systems
PDF  73 Pages
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제조업체  STMICROELECTRONICS [STMicroelectronics]
홈페이지  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

L5965 데이터시트(HTML) 35 Page - STMicroelectronics

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1.
For DI, CNT=DI[21] is ignored when calculating CRC, it means only {DI[31:22],DI[20:5]} is used to calculate
CRC. For example, if DI[31:5]=27‘b1000_0010_1011_1111_1111_1111_111, the CRC[4:0]= 5‘b0_0011
2.
For DO, DO[21] is ignored when calculating CRC, it means only {DO[31:22],DO[20:5]} is used to calculate
CRC.
3.
The initial value of CRC generator is 5'b1_1111.
4.
MSB (DI[31]) is shift in CRC generator at first.
Figure 23. Structure of CRC generator
XOR
MOSI
BIT4
XOR
BIT1
BIT0
BIT3
BIT2
GAPG2402160858PS
5.2
SPI registers mapping
When registers are not written, their default state is the one shown in the respective map.
5.2.1
SPI REG BUCK1
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0
RESERVED
R
R
R
R
R
R/W
R/W
R
R
R/W
R/W
R/W
R/W
R/W
R/W
R
0
0
0
0
0
0
0
0
0
0
0
0
1
0
0
0
Address
0x00
BUCK1_CUR_MAX: Driver max output current (see BUCK1 GATE Driver)
BUCK1_XTH: OV/UV/PG threshold setting (see Power output UV/OV monitor, Power Good)
BUCK1_SPREAD_EN: Spread spectrum enable
BUCK1_BLANKTIME: Output power stage blanking time (see tprogramming_dead_BUCK1)
BUCK1_SSCLK_SEL: SoftStart time selection (see tSOFTSTART_BUCK1)
L5965
SPI registers mapping
DS12567 - Rev 3
page 35/73



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