mc33789 Freescale Semiconductor, Inc, mc33789 Datasheet - Page 64

• Manufacturer Part Number: mc33789
• Description: Airbag System Basis Chip Sbc With Power Supply And Psi5 Sensor Interface
• Manufacturer: Freescale Semiconductor, Inc

Table 32. SPI Command, - OUT1_CTL
FUNCTIONAL DEVICE OPERATION
SENSOR MESSAGE, OPERATION COMMAND AND SPI
OUT1_CTL (0x5B, 0x9B) and OUT2_CTL (0x5C, 0x9C)
deactivate the general purpose drivers. OUT1_CTL is for
driver1 (OUT1_D, OUT1_S), and OUT2_CTL is for driver 2
(OUT2_D, OUT2_S).
Setting the duty cycle to 111111b will turn the driver ON
without PWM, i.e. 100% duty cycle. Setting the duty cycle to
64
33789
Default
The OUTx_CTL commands are used to activate/
They are also used to configure the PWM duty cycle.
Read *
Write
→
Default →
SO
SO
SI
SI
10 001010
11 001011
12 001100
13 001101
14 001110
15 001111
16 010000
17 010001
18 010010
19 010011
20 010100
21 010101
0 000000
1 000001
2 000010
3 000011
4 000100
5 000101
6 000110
7 000111
8 001000
9 001001
DC5:D
C0
15
0
0
1
0
DC%
OFF
11.1
12.7
14.3
15.9
17.5
19.0
20.6
22.2
23.8
25.4
27.0
28.6
30.2
31.7
33.3
1.6
3.2
4.8
6.3
7.9
9.5
14
1
0
0
1
0
1
13
0
1
0
0
22 010110
23 010111
24 011000
25 011001
26 011010
27 011011
28 011100
29 011101
30 011110
31 011111
32 100000
33 100001
34 100010
35 100011
36 100100
37 100101
38 100110
39 100111
40 101000
41 101001
42 101010
* The Write response will always be ERROR with RE bit set to “1”
Previous reset was not caused by watchdog error
Previous reset was caused by watchdog error
DC5:D
C0
12
1
P
1
P
DC%
34.9
36.5
38.1
39.7
41.3
42.9
44.4
46.0
47.6
49.2
50.8
52.4
54.0
55.6
57.1
58.7
60.3
61.9
63.5
65.1
66.7
11
1
1
1
1
OUT1_CTL (0x5B, 0x9B)
10
0
1
0
1
43 101011
44 101100
45 101101
46 101110
47 101111
48 110000
49 110001
50 110010
51 110011
52 110100
53 110101
54 110110
55 110111
56 111000
57 111001
58 111010
59 111011
60 111100
61 111101
62 111110
63 111111
DC5:D
C0
9
1
1
1
1
000000b will deactivate the driver, i.e. 0% duty cycle, thus it
is considered as an “OFF” command.
Highside Driver or Low side Driver.
driver designation, comparator diagnostics information, and
shows if a thermal shutdown occurred.
DC%
68.3
69.8
71.4
73.0
74.6
76.2
77.8
79.4
81.0
82.5
84.1
85.7
87.3
88.9
90.5
92.1
93.7
95.2
96.8
98.4
ON
8
1
0
1
0
The OUTx_CTL commands also configure the drivers as a
The response from the command indicates the echo of the
DC5
Default
Default
Default
Default
Default
Default
TS
TS
7
x
* Status is cleared after OFF command is sent
DC4
→
→
→
→
→
→
6
0
0
x
OFF23 OFF13 ON23
OFF23 OFF13 ON23
OFF13 Driver OFF 1/3 V
OFF23 Driver OFF 2/3 V
ON13 Driver ON 1/3 V
ON23 Driver ON 2/3 V
DC3
HS
TS
Analog Integrated Circuit Device Data
5
x
0
1
0
1
0
1
0
1
0
1
0
1
Driver Configuration Select
LS Driver
HS Driver
Diagnosis below threshold
Diagnosis above threshold
Diagnosis below threshold
Diagnosis above threshold
Diagnosis below threshold
Diagnosis above threshold
Diagnosis below threshold
Diagnosis above threshold
Thermal Shutdown Indicator
No shutdown has occurred
Thermal shutdown has occurred*
DC2
4
x
Freescale Semiconductor
DC1
3
x
PWR
PWR
PWR
PWR
ON13
ON13
DC0
2
x
Comparator Result
Comparator Result
Comparator Result
Comparator Result
HS
HS
HS
1
x
0
x
0
x
0