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VNF9D5F датащи(PDF) 10 Page - STMicroelectronics

номер детали VNF9D5F
подробное описание детали  2-channel high-side driver with STi²Fuse protection for automotive power distribution applications
PDF  106 Pages
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производитель  STMICROELECTRONICS [STMicroelectronics]
домашняя страница  http://www.st.com
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Table 4. Frame 1: read (ROM) 0x3F 0x--
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
CMD
OC1
OC0
Address
1
1
1
1
1
1
1
1
DATA1
X(1)
X
X
X
X
X
X
X
0
0
0
0
0
0
0
0
DATA2
X
X
X
X
X
X
X
X
0
0
0
0
0
0
0
0
1. X = do not care. At least one of these bits must be zero, as 0xFFFF frame is not allowed.
The entry to the Fail Safe mode can occur due to the CSN timeout.
In this specific case, the following procedure must be executed to leave the Fail Safe mode:
•
Removing the cause of the CSN stuck
•
Toggling the CSN pin for a min tSHCH (time to release the SDO line), see parameter in Table 51
•
Sending the SPI frames
If the above procedure is not respected, the first SPI frame will be rejected and the state transition will fail.
Transition from fail-safe mode to normal mode is performed by two special SPI sequences
•
Frame 1: write “CTRL”0x4000
•
Frame 2: write “CTRL”0x0800
Table 5. Frame 1 (write CTRL0x4000)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
CMD
OC1
OC0
Address
0
0
0
1
0
1
0
0
DATA1
GOSTBY
UNLOCK
Not Used
Not Used
EN
PWM_
TRIG
Not Used
Not Used
0
1
0
0
0
0
0
0
DATA2
LOCKbit 5
LOCKbit 4
LOCKbit3
LOCKbit2
LOCKbit1
LOCKbit0
PWMSYNC
Parity
0
0
0
0
0
0
0
0
Table 6. Frame 2 (write CTRL0x0800)
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
CMD
OC1
OC0
Address
0
0
0
1
0
1
0
0
DATA1
GOSTBY
UNLOCK
Not Used
Not Used
EN
PWM_TRIG
Not Used
Not Used
0
0
0
0
1
0
0
0
DATA2
LOCKbit 5
LOCKbit 4
LOCKbit3
LOCKbit2
LOCKbit1
LOCKbit0
PWMSYNC
Parity
0
0
0
0
0
0
0
0
Transition from normal mode to pre-standby mode using SPI: two frames needed
•
Frame 1: write “CTRL”0x4800
•
Frame 2: write “CTRL”0x8000
VNF9D5F
Functional description
DS13946 - Rev 6
page 10/106



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