參數(shù)資料
型號: TLE6712
廠商: INFINEON TECHNOLOGIES AG
元件分類: 模擬信號調(diào)理
英文描述: SPECIALTY ANALOG CIRCUIT, PDSO24
封裝: PLASTIC, DSO-24
文件頁數(shù): 10/48頁
文件大?。?/td> 386K
代理商: TLE6712
TLE 6712
Company Confidential
18
V 1.61 2001-07-13
3
SPI Commands
3.1
General Information on SPI Command Structure
All functions e.g. 'Firing' or 'Measurement' are controlled by a 16 bit instruction
command. The 16 bit word consists of two bytes (8 bit) which are decoded by the
decoder logic circuit. The Dual Firing Airbag IC has latcherd and not latched commands.
After a hardware reset all internal control registers and decoded signals are reset to its
default value. The default settings are, that all squib drivers are off and all measurements
are deactivated. The IC can although be set to the default values by the SPI command
FFFF
H.
Byte A: Function Byte
Byte B: Selection Byte
a7
a6
a5
a4
a3
a2
a1
a0
b7
b6
b5
b4
b3
b2
b1
b0
MSB
LSB MSB
LSB
Function Byte
a0
Indicates valid control command
a1...a3
Control bits
a4...a7
SPI command bits
Selection Byte
b0...b3
Channel selection/firing and test commands
b4...b6
Switch or measurement selection
b7
Not used except firing and test commands
In case of firing command
b0...b7
Selects the squib driver transistors, all combinations are
allowed.
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