mcz33800ek/r2 Freescale Semiconductor, Inc, mcz33800ek/r2 Datasheet - Page 28

• Manufacturer Part Number: mcz33800ek/r2
• Description: Engine Control Integrated Circuit
• Manufacturer: Freescale Semiconductor, Inc

Table 15. CCD1 Constant Current Controller Commands
Notes
28
33800
FUNCTIONAL DEVICE OPERATION
LOGIC COMMANDS AND REGISTERS
CCD1 Control
0 = Pull Down
Current Source
1 = Pull Up Current
Source
CCD1 Frequency
& Amplitude
Next SO Response
(Message 2)
0 = No Fault, 1 =
Fault
19.
20.
21.
22.
Command
Trim Set bit indicates (0=untrimmed, 1= trimmed)
VCAL Status bit indicates when internal or external supply is used. VCAL Bit = 0 indicates external, VCAL Bit = 1indicates internal.
Reset Bit indicates the device has performed a POR.
CCD1 DISable bit allows the CCD1 driver to operate as a standard 1.0A low side driver. With CCD1_DIS bit = 1 the CCD1 function is
disabled.
Table 16. CCD1 Dither Frequency Select
Notes: Frequencies above 250Hz are +- 20%
Bits 3210
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
TLim or
CAL Flt
OvrVlt
15
1
1
CCD1 Command Address
CCD1 Command Address
Reset
14
0
0
Control Address
Dither Frequency
No change
Set
Dither Off
Trim
500 Hz
100Hz
150Hz
200Hz
250Hz
300Hz
350Hz
400Hz
450Hz
133Hz
166Hz
233Hz
266Hz
13
50Hz
1
1
(19)
Status
VCAL
ext=1
int=0
12
1
1
CCD2
Open
Fault
11
0
1
Pull Up
CCD1
CCD2
Retry
Short
Fault
Diag
10
0
1
DTHR
CCD1
Open
Fault
OFF
DIS
ON/
9
0
0
CCD1
CCD1
CCD2 CONSTANT CURRENT CONTROLLER
hysteretic current controller with a superimposed dither. The
controller is designed to provide a programmable constant
current through a solenoid valve. By controlling current
through the solenoid valve, fluid flow control is achieved.
the 33800 device (see
the output current based on the CCD2 Control command.
The IC is capable of sinking an average output current from
0.0mA to 232mA (without dither). If operating the device with
dither, the DAC + Dither value must be less than 232mA or
Short
Fault
DIS
8
0
0
The CCD2 constant current controller is a switching
The master SPI device sends 16-bit command words to
Status
OUT8
TLim
Fault
EN
Table 17. CCD1 Dither Amplitude Select
7
0
1
Bits 654
000
001
010
011
100
101
110
111
Status
OUT7
Fault
6
0
Dither Amplitude
0
Command Bits
9 BIT DAC Command Data
Status
OUT6
Fault
5
0
1
Analog Integrated Circuit Device Data
Table
Status
OUT5
Fault
Dither Amplitude
18). The master device sets up
4
0
1
Dither Off
100.8mA
151.2mA
201.6mA
252.0mA
302.4mA
352.8mA
50.4mA
Status
OUT4
Fault
Freescale Semiconductor
3
0
0
Dither Frequency
Status
OUT3
Fault
2
0
1
Status
OUT2
Fault
1
0
0
Status
OUT1
Fault
0
0
0