NCV7748 Datasheet, PDF (17/30 Pages) ON Semiconductor – Automotive LIN Low-Side Relay Driver

NCV7748
OUTPUT CONTROL FRAME
Table 10. OUTPUT CONTROL COMMAND
Master
Byte
0
1
2
3
4
5
6
7
8
9
Content
Identifier
Data 1
Data 2
Data 3
Data 4
Data 5
Data 6
Data 7
Data 8
Checksum
Bit 7
Bit 6
OUT4_A/A’
OUT8_A/A’
OUT4_B/B’
OUT8_B/B’
OUT4_C/C’
OUT8_C/C’
OUT4_D/D’
OUT8_D/D’
Structure
Bit 5
Bit 4
Bit 3
Bit 2
PID
OUT3_A/A’
OUT2_A/A’
OUT7_A/A’
OUT6_A/A’
OUT3_B/B’
OUT2_B/B’
OUT7_B/B’
OUT6_B/B’
OUT3_C/C’
OUT2_C/C’
OUT7_C/C’
OUT6_C/C’
OUT3_D/D’
OUT2_D/D’
OUT7_D/D’
OUT6_D/D’
Enhanced Checksum
Bit 1
Bit 0
OUT1_A/A’
OUT5_A/A’
OUT1_B/B’
OUT5_B/B’
OUT1_C/C’
OUT5_C/C’
OUT1_D/D’
OUT5_D/D’
The output Control command is used to control all the
connected drivers in the virtual node. Each data byte
controls up to four channels where each two bits are assigned
to one output channel. (See Table 10) The decoding of the
2−bit output control is shown in the Table 11.
Table 11. OUTPUT ENCODING
OUTx_A[1]
OUTx_A[0]
Output
0
0
No change
0
1
OUTx Off*
1
0
OUTx On
1
1
No change
*Outputs OUT4 and OUT8 have open load diagnostics,
which are enabled when the output is off.
The ID of the control frame depends on the chosen NAD
of the virtual LIN node. The mapping of the ID to be used
based on NAD is shown in Table 12.
Table 12. NAD TO OUTPUT CONTROL COMMAND
ID/PID MAPPING
R_NAD
475 W
NAD
0x60
ID
0x01
PID
0xC1
1.00 kW
0x62
0x09
0x49
2.21 kW
0x64
0x11
0x11
4.75 kW
0x66
0x19
0x99
10.0 kW
0x68
0x21
0x61
22.1 kW
0x6A
0x29
0xE9
47.5 kW
0x6C
0x31
0xB1
Table 13 shows NAD to ID mapping in the context of SAEJ2602 spec.
Table 13. OUTPUT CONTROL COMMAND NAD TO ID MAPPING LINKED TO SAEJ2602 SPEC
NAD Message ID PID
NAD Message ID PID
NAD Message ID PID
NAD
$60
$0
$64
$10
$68
$20
$6C
$1
0xC1
$11
0x11
$21
0x61
$2
$12
$22
$3
$13
$23
$4
$14
$24
$5
$15
$25
$6
$16
$26
$7
$17
$27
$62
$8
$66
$18
$6A
$28
$6E
$9
0x49
$19
0x99
$29
0xE9
$0A
$1A
$2A
$0B
$1B
$2B
$0C
$1C
$2C
$6F
$0D
$1D
$2D
$0E
$1E
$2E
$0F
$1F
$2F
Message ID
$30
$31
$32
$33
$34
$35
$36
$37
No
Message
IDs defined
No
Message
IDs defined
PID
0xB1
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