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33810 Datasheet(PDF) 29 Page - Freescale Semiconductor, Inc

Part # 33810
Description  Automotive Engine Control IC Quad injector driver with Parallel/SPI control
PDF  37 Pages
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Manufacturer  FREESCALE [Freescale Semiconductor, Inc]
Direct Link  http://www.freescale.com
Logo FREESCALE - Freescale Semiconductor, Inc

33810 Datasheet(HTML) 29 Page - Freescale Semiconductor, Inc

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Analog Integrated Circuit Device Data
Freescale Semiconductor
29
33810
FUNCTIONAL DEVICE OPERATION
OPERATIONAL MODES
Table 19.
Program State
Fault
Fault Bits
Off
State
Open
Load
Pull
Dwn
On
State
Open
Load
En Bit
Driver
On/Off
Output
STB
STG
OPEN
OUTx
Batt
Short
Fault
OUTx
OFF
Open
Fault
OUTx
ON
Open
Fault
Fault Reported
0
X
Off
STB
0
0
0
No Fault
0
X
Off
STG
0
0
0
No Fault
0
X
Off
OPEN
0
0
0
No Fault
1
X
Off
STB
0
0
0
No Fault
1
X
Off
STG
0
1
0
Open Load
1
X
Off
OPEN
0
1
0
Open Load
X
0
On
STB
1
0
0
Short to Batt
X
0
On
STG
0
0
0
No Fault
X
0
On
OPEN
0
0
0
No Fault
X
1
On
STB
1
0
0
Short to Batt
X
1
On
STG
0
0
1
Open Load
X
1
On
OPEN
0
0
1
Open Load
InjectorDriver Diagnostics
CLOCK CALIBRATION COMMAND
In cases where an accurate time base is required, the user
must calibrate the internal timers using the clock calibration
command (refer to Table 20). After the 33810 device
receives the calibration command, the device expects to
receive a 32
μs logic [0] calibration pulse on the CS pin. The
pulse is used to calibrate the internal clock. Any SPI message
may be sent during the 32
μs calibration chip select. Because
the oscillator frequency may shift up to 35% with
temperature, calibration is required for an accurate time
base. The calibration command should be used to update the
device on a periodic basis.
SPI COMMAND SUMMARY
The SPI commands are defined as 16 bits with 4 address
control bits and 12 command data bits. There are 12 separate
commands that are used to set operational parameters of
device. The operational parameters are stored internally in
16 bit registers.
Table 20 defines the commands and default state of the
internal registers at POR. SPI commands may be sent to the
device at any time in NORMAL STATE.
Messages sent are acted upon on the rising edge of the
CS input.
.
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
Read Registers Command
0
0
0
0
0
1
0
1
0
<0000>
Internal Register Address
0
0
0
0
All Status Command
0
0
0
0
0
1
0
1
0
0
0
0
0
0
0
0
0
SPI Check Command
0
0
0
0
0
1
1
1
1
0
0
0
0
0
0
0
0
Mode Select Command
1
0
0
0
1
<0000>
IGN/GP Mode Select
Set to IGN Mode
<0>
V10
En
Disab
<0>
OVR/
Undr
Vtg
X
X
<0>
pwm3
EN
Disab
<0>
pwm2
EN
Disab
<0>
pwm1
EN
Disab
<0>
pwm0
EN
Disab



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