MC33910G5AC/MC3433910G5AC
FUNCTIONAL DEVICE OPERATIONS
LOGIC COMMANDS AND REGISTERS
REGISTER DEFINITIONS
HS1CL
System Status Register - SYSSR
HS1OP
HS2CL
HS2OP
HSS
The System Status Register (SYSSR) is always
transferred with every SPI transmission and gives a quick
system status overview. It summarizes the status of the
Voltage Monitor Status (VMS), LIN Status (LINS) and High
Side Status (HSS).
Figure 22. High Side Status
Mode Control Register - MCR
Table 10. System Status Register
The Mode Control Register (MCR) allows switching
between the operation modes and to configure the 33910.
Writing the MCR will return the VSR.
S7
S6
S5
S4
Read
VMS
LINS
HSS
-
Table 11. Mode Control Register - $0
VMS - Voltage Monitor Status
C3
C2
C1
C0
This read-only bit indicates that one or more bits in the
VSR are set.
Write
HVSE
0
MOD2
MOD1
1 = Voltage Monitor bit set
0 = None
Reset
Value
1
0
-
-
-
-
Reset
Condition
POR
POR
BATFAIL
VDDOT
VMS
HVSE - High-Voltage Shutdown Enable
VSUV
VSOV
This write-only bit enables/disables automatic shutdown of
the high side drivers during a high-voltage VSOV condition.
1 = automatic shutdown enabled
0 = automatic shutdown disabled
Figure 20. Voltage Monitor Status
LINS - LIN Status
MOD2, MOD1 - Mode Control Bits
This read-only bit indicates that one or more bits in the
LINSR are set.
These write-only bits select the operating mode and allow
clearing the watchdog in accordance with Table 8, Mode
Control Bits.
1 = LIN Status bit set
0 = None
Table 12. Mode Control Bits
MOD2
MOD1
Description
0
0
1
1
0
1
0
1
Normal Mode
Stop Mode
LINOT
LINS
TXDOM
Sleep Mode
RXSHORT
Normal Mode + Watchdog Clear
Figure 21. LIN Status
Voltage Status Register - VSR
Returns the status of the several voltage monitors. This
register is also returned when writing to the Mode Control
Register (MCR).
HSS - High Side Switch Status
This read-only bit indicates that one or more bits in the
HSSR are set.
Table 13. Voltage Status Register - $0/$1
1 = High Side Status bit set
0 = None
S3
S2
S1
S0
Read
VSOV
VSUV
VDDOT
BATFAIL
33910
Analog Integrated Circuit Device Data
Freescale Semiconductor
39
FREESCALE [ Freescale ]
