l5953 STMicroelectronics, l5953 Datasheet - Page 22

• Manufacturer Part Number: l5953
• Description: Multiple Switching Voltage Regulator
• Manufacturer: STMicroelectronics

Summary of the main operations
5.7
5.8
22/31
Operation G
●
Operation H
●
Figure 13. Write enable latch sequence
Figure 14. Test mode diagnostic procedure start (after a write enable latch sequence)
Figure 15. Read the diagnostic registerCase1: (after a test mode diagnostic procedure
S
C
D
Q
S
C
D
Q
Write operation disabled
1) WRDI instruction
Read the diagnostic register case 3: after an IRQ pin activation
1) RDIA instruction
2) Diagnostic register output
The delay between the IRQ activation and operation F must be longer than 100μs
00
00
CPHA=0
CPOL=0
HIGH IMPEDANCE
start)
01
01
02
02
INSTRUCTION
INSTRUCTION
03
03
CPOL=0, CPHA=0
04
04
(Figure
(Table
05
Q
S
C
D
CPOL=0, CPHA=0
05
06
06
8.)
07
17.)
07
(Figure
s15
08
00
08
d7
s14
09
09
d6
DIAGNOSTIC REGISTER OUT
s13
10
17.)
01
10
d5
s12
HIGH IMPEDANCE
11
HIGH IMPEDANCE
02
11
d4
s11
12
12
d3
s10
03
13
STATUS REGISTER
13
d2
14
s9
04
15
14
d1
s8
05
16
s7
15
d0
17
s6
06
D03AU1483
18
s5
07
19
s4
20
s3
21
s2
22
s1
D03AU1484
D03AU1485
23
s0
L5953