L5953_07 STMICROELECTRONICS [STMicroelectronics], L5953_07 Datasheet - Page 19

• Manufacturer Part Number: L5953_07
• Description: Multiple switching voltage regulator
• Manufacturer: STMICROELECTRONICS [STMicroelectronics]

L5953
Table 9.
REG
s15
2
HSD
s14
1
Table 8.
Status register
Table 10.
1. In this case the bits s15 - s2 are internally set to 0 (regulators and high side drivers are in off condition)
.
.
HSD
s13
2
s15
s14
s13
s12
s11
s10
s9
s8
s7
s6
s5
s4
s3
s2
s1
s0
TBD
s12
Instruction
REG2 linear voltage
regulator 1.5 to 3.3V
High side driver 1
High side driver 2
TBD
TBD
PWM switching frequency
PWM voltage regulator
TBD
TBD
TBD
TBD
TBD
TBD
TBD
Test mode
Diagnostic
WREN
WSTA
WRDI
RSTA
Instruction set
RDIA
Status register description
TBD
s11
PWM
freq.
s10
PWM TBD
s9
Set write enable latch
Reset write enable latch
Write status register
Read diagnostic register
Read status register
s8
Regulator off
HSD1 off
HSD2 off
260kHz
PWM1 off
Test mode off
Diagnostic off
TBD
Description
s7
0
TBD
s6
TBD
s5
Regulator on
HSD1 on
HSD2 on
400kHz
PWM1 on
Test mode on
Starts the diagnostic procedure:
- in test mode if s1=1;
- during normal operation if s1=0
If s1=0 and s0=1, must be s14 = 1
(HSD1 ON) and s13=1 (HSD2 ON)
TBD
s4
TBD
s3
Instruction Format
(1)
TBD
00000110
00000100
00000010
00000101
00000011
s2
1
mode
SPI interface
Test
s1
START
DIAG
s0
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