33810_10 Datasheet, PDF (28/35 Pages) Freescale Semiconductor, Inc – Automotive Engine Control IC

FUNCTIONAL DEVICE OPERATION
OPERATIONAL MODES
Table 20. SPI Command Message Set and Default State
Command
Control Address Bits
Command Bits
hex 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
LSD Fault Command
20 010
<10X>
X <1> <1> <1> <1> <1> <1> <1> <1>
LSD Flt Operation
OUT3 OUT2 OUT1 OUT0 OUT3 OUT2 OUT1 OUT0
shutdn,Tlim,Timer
ON ON ON ON OFF OFF OFF OFF
Open Open Open Open Open Open Open Open
Retry on timer
Load Load Load Load Load Load Load Load
and No Tlim
Enabl Enabl Enabl Enabl Enabl Enabl Enabl Enabl
Driver ON/OFF Command _{3 0 0 1 1 X X X X}
0 = OFF, 1 = ON
<0000>
GPGD
OFF
(ignored in Ignition Mode)
<0000>
OUTx Driver
OFF
Spark Command
40 100
<100>
<0> <0> <0> <0> <0> <11>
<01>
Max Dwell Timer
MaxDwell
Default=32 ms
(In Ignition Mode
Only)
Max Over Gain Soft Open Open
Dwell lap Sel Shut 2^ed Secondary
En Dwell Gain Dn En Clmp OSFLT
Disab Disab = 1 Disab Disab =100 μs
End Spark
Threshold
VPWR
+5.5 V
End Spark Filter
50 1 0 1XXXXXXXXXX
<01>
End Spark
Thresh
4.0 μs
DAC Command
60 110
<1000>
<100>
MAXI DAC Threshold
MAXI=14 A
Overlap Setting
Overlap 50%
<01010>
NOMI DAC Threshold
NOMI=5.5 A
GPGD Short Threshold
Voltage Command
70 111
<011>
<011>
<011>
<011>
Short to Batt V_FB3 Short to Batt V_FB2 Short to Batt V_FB1 Short to Batt V_FB0
Vth = 2.0 V
Vth = 2.0 V
Vth = 2.0 V
Vth = 2.0 V
GPGD Short Duration
Timer Command
81 000
<011>
<011>
<011>
<011>
Short to Batt t_FB3 Short to Batt t_FB2 Short to Batt t_FB1 Short to Batt t_FB0
Timer = 240 μs Timer = 240 μs Timer = 240 μs Timer = 240 μs
GPGD Fault Operation
Select Command
91 001
<1111>
Retry/Shutdown Bit
Retry on Fault
XXXX
<0000>
Shutdown Drivers on MAXI
Disabled
PWM0 to PWM3 Freq & _{A 1 0 1 0}
<00>
<000>
DC Command
PWMx PWM Frequency
address
10 Hz
PWM0
<0000000>
PWM Duty Cycle
0% Duty Cycle
INVALID COMMAND
B1 0 1 1XXXXXXXXXXXX
INVALID COMMAND
C1 0 1 1 X XXXXXXXXXXX
INVALID COMMAND
D1 1 0 1 X XXXXXXXXXXX
Clock Calibration
Command
E1 1 1 0XXXXXXXXXXXX
INVALID COMMAND
F1 1 1 1XXXXXXXXXXXX
33810
28
Analog Integrated Circuit Device Data
Freescale Semiconductor