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SPSB100 Scheda tecnica(PDF) 124 Page - STMicroelectronics

Il numero della parte SPSB100
Spiegazioni elettronici  Automotive power management IC for highly integrated processors
PDF  214 Pages
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Produttore elettronici  STMICROELECTRONICS [STMicroelectronics]
Homepage  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

SPSB100 Scheda tecnica(HTML) 124 Page - STMicroelectronics

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Table 72. DCR3 (0x03) MSB description
Bit
Name
Description
23
RES
Reserved
22
RES
Reserved
21
BUCK3_SPREAD_ENA
Frequency spread selection
1: Enabled
0: Disabled (default)
20
BUCK2_SPREAD_ENA
Frequency spread selection
1: Enabled
0: Disabled (default)
19
BUCK1_SPREAD_ENA
Frequency spread selection
1: Enabled
0: Disabled (default)
18
CLR_WDFAIL_CNT
Clear WDFAIL_CNT to 0
This bit is always read low
17
RES
Reserved
16
BUCK3_FTUNE_2
Table 73. DCR3 (0x03)
Bit 15
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
1 (R/W)
1 (R/W)
0 (R/W)
0 (R/W)
0 (R/W)
0 (R/W)
0 (R/W)
0 (R/W)
BUCK3_FTUNE_1
BUCK3_FTUNE_0
BOOST_OFF
FBB_OV_EW_TH_3
FBB_OV_EW_TH_2
FBB_OV_EW_TH_1
FBB_OV_EW_TH_0
FBB_UV_EW_TH_3
BUCK3 fine-tune
bit 1
BUCK3 fine-tune
bit 0
BOOST
disable bit
FBB overvoltage
early warning
threshold bit 3
FBB overvoltage
early warning
threshold bit 2
FBB overvoltage
early warning
threshold bit 1
FBB overvoltage
early warning
threshold bit 0
FBB undervoltage
early warning
threshold bit 3
Table 74. DCR3 (0x03) description
Bit
Name
Description
15
BUCK3_FTUNE_1
14
BUCK3_FTUNE_0
Valid only if U-NVM bits BUCK3_PU_VALUE = 001
11x: 0.95 V
101: 0.96 V
100: 0.97 V
000: 0.98 V (default)
001: 0.99 V
010: 1.00 V
011: 1.01 V
13
BOOST_OFF
Boost disable
1: Boost is disabled
0: Boost feature define by BOOST_DIS U-NVM bit (default)
12 FBB_OV_EW_TH_3
FBB over voltage early warning threshold
At FBB > FBB_OV_EW_TH, an interrupt is generated on IRQ pin and status bit FBB_OV_EW in
SR4 is set (in active mode)
0000: (default) feature deactivated
0001: 17 V
... (1 V step)
SPSB100
SPI registers
DS14640 - Rev 1
page 124/214



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