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L99PM72PXP bảng dữ liệu(PDF) 122 Page - STMicroelectronics

tên linh kiện L99PM72PXP
Giải thích chi tiết về linh kiện  Advanced power management system IC with embedded LIN and high speed CAN transceiver supporting CAN Partial Networking
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nhà sản xuất  STMICROELECTRONICS [STMicroelectronics]
Trang chủ  http://www.st.com
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L99PM72PXP bảng dữ liệu(HTML) 122 Page - STMicroelectronics

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Doc ID 023553 Rev 3
6.2.26
Status Register 4
Table 142.
Status register 4: command and data bytes
Command byte
1st data byte
2nd data byte
Read/write
Address
Bit <15:8>
Bit <7:0>
x
x
0
1
0
1
0
0
Data, 8bit
Data, 8 bit
Table 143.
Control register 4, data bytes
1st data byte <15:8>
2nd data byte <7:0>
Function
Group
Diagnosis 5
Diagnosis 6
Table 144.
Status register 4, bits
Bit
Name
Comment
Information storage
15
SWRD_15
Status flag for Read operation to Selective Wakeup
relevant Registers
0: Read not done
1: Read done
See also Section 2.10: Serial Peripheral Interface (ST
SPI Standard 3.0)
Automatically cleared
by a write
14
SWRD_14
13
SWRD_13
12
SWRD_12
11
SWRD_11
10
SWRD_10
9
SWRD_9
8
SWRD_8
7
SWRD_7
6
SYS_ERR
This bit is a logical OR combination of
NOT(SWRD_x) OR OSC_Fail OR FD_ERR
The selective wake feature cannot be enabled
(SW_EN = 1) if SYS_ERR = 1
In case of a SYS_ERR the selective wake-up feature is
disabled (SW_EN = 0)
Live bit be updated
while the change of
SWRD_x, OSC_Fail
and FD_ERR.
If SWRD_x are all 1,
OSC_Fail is 0 and
FD_ERR is 0, this bit is
0, otherwise this bit is 1.
5
TX_SYNC
Status flag for Synchronous Reference oscillator of the
Transceiver. Indicates that the last received frame was
decoded correctly
0: Not synchron
1: Synchron
Live bit updated after
each sent CAN frame



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