BTS54040-LBF_15 Datasheet, PDF (62/67 Pages) Infineon Technologies AG – SPI Power Controller

BTS54040-LBF
Serial Peripheral Interface (SPI)
Field
Bits
Type Description
SWCR.SWR
1
DCR.SBM
3
DCR.MUX
2:0
rw Switch Register
0_B (default) OUT.OUTn and LGCR.LEDn can be written and read
1_B OUT.INSTn can be read and LGCR.GBRn can be written and read
r
Switch Bypass Monitor²⁾
0_B V_DS < V_DS(SB)
1_B V_DS > V_DS(SB)
rw Set Current Sense Multiplexer Configuration in OFF-state
000_B IS pin is high impedance
001_B IS pin is high impedance
010_B IS pin is high impedance
011_B IS pin is high impedance
100_B Diagnosis enable of external driver activated (EDD set to “high”)
101_B IS pin is high impedance
110_B IS pin is high impedance
111_B Stand-by mode (IS pin is high impedance)
Set Multiplexer Configuration in ON-state
000_B Current sense of channel 1 is routed to IS pin
001_B Current sense of channel 2 is routed to IS pin
010_B Current sense of channel 3 is routed to IS pin
011_B Current sense of channel 4 is routed to IS pin
100_B Diagnosis enable of external driver activated (EDD set to “high”)
101_B IS pin is high impedance
110_B IS pin is high impedance
111_B Stand-by mode (IS pin is high impedance))
1) In Limp Home Mode (LHI pin set to “high”) the combinatorial logic is switched to OR-mode.
2) The switch bypass monitor compares the threshold V_DS(SB) with the voltage V_DS across the power transistor of that channel
which is selected by the current sense multiplexer (DCR.MUX).
Data Sheet
62
Rev. 2.1, 2014-12-05