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NCV74300V3GEVK

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NCV7430
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19
Another possibility is to determine the specific action within the data field in order to use fewer identifiers. One can for
example use the reserved identifier 0x3C and take advantage of the 8 byte data field to provide a physical address, a command
and the needed parameters for the action, as illustrated in the example below.
ID Data Byte 1 Data Byte 2 Data Byte 3 Data Byte 4 Data Byte 5 Data Byte 6 Data Byte 7 Data Byte 8
0x3C 00 1
AppCmd command physical
address
parameters
NOTE: Bit 7 of Data byte 1 must be at ‘1’ since the LIN specification requires that contents from 0x00 to 0x7F must be
reserved for broadcast messages (0x00 being for the “Sleep” message). See also LIN command Sleep
. The
NCV7430 is using both of above mentioned methods.
LIN Commands:
In the following paragraphs all LIN frame commands are described. The gray filled cells of the tables present the bytes sent
by the master while the white cells present the bytes sent by the slave (NCV7430).
Table 13. COMMAND SUMMARY
Command Response
Get_Full_Status Get_Full_Status In frame response 1
Get_Actual_Param1 Get_Actual_Param In frame response 1
Get_Actual_Param2 Get_Actual_Param In frame response 2
Get_OTP_Param 1 Get_OTP_Param In frame response 1
Get_OTP_Param 2 Get_OTP_Param In frame response 2
Get_Status READING FRAME Get_Status In frame response 1
Get_Color READING FRAME Get_Color In frame response 1
Get_LED_Control READING FRAME Get_LED In frame response 1
Set_LED_Control WRITING FRAME −
Set_Color WRITING FRAME −
Set_Color_Short −
Set_Intensity −
Set_Primary_Cal_Param −
Set_Secondary_Cal_Param −
Set_OTP_Param −
Sleep −
NCV7430
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20
Get_Full_Status
This command is provided to the circuit by the LIN master
to get a complete status of the circuit. Refer to Registers
and
Flags Table
to see the meaning of the parameters sent to the
LIN master.
Note: A Get_Full_Status command will clear flags <TW>,
<TSD>, <ERRLEDx[2:0]>, <VBB_Reset> and
<RETRYSTATE>. If the error condition persists, the
value will be set again.
Get _Full_Status conforms to a 0x3C command structure.
Table 14. Get_Full_Status
Byte Content
Structure
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
0 Identifier 0 0 1 1 1 1 0 0
1 Data 1 AppCMD =0x80
2 Data 2 1 CMD[6:0] = 0x01
3 Data 3 1 1 AD[5:0]
4 Data 4 0xFF
5 Data 5 0xFF
6 Data 6 0xFF
7 Data 7 0xFF
8 Data 8 0xFF
9 Checksum Classic Checksum over data
Get_Full_Status In frame response 1
Byte Content
Structure
Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
0 Identifier 0 1 1 1 1 1 0 1
1 Data 1 1 1 AD[5:0]
2 Data 2 0xFF
3 Data 3 1 1 1 1 1 LIN Data
error
LIN Header
error
LIN Bit
error
4 Data 4 1 1 VBB Under
Voltage
VBB Reset TSD TW Tinfo[1:0]
5 Data 5 TH_CONT
STATE 3
TH_CONT
STATE 2
TH_CONT
STATE 1
TH_CONT
STATE 0
RETRY
STATE
ERR[2]
LED1
ERR[1]
LED1
ERR[0]
LED1
6 Data 6 1 ERR[2]
LED3
ERR[1]
LED3
ERR[0]
LED3
1 ERR[2]
LED2
ERR[1]
LED2
ERR[0]
LED2
7 Data 7 LED3
ENABLE
LED2
ENABLE
LED1
ENABLE
LEDs
ON/OFF
GROUP_ID3 GROUP_ID2 GROUP_ID1 GROUP_ID0
8 Data 8 0xFF
9 Checksum Classic Checksum over data
Where:
Tinfo[1:0] gives the actual state of the temperature, while TW and TSD present the Latched status
The Error states are as follows:
Error Description: ERR[2] LEDx ERR[1] LEDx ERR[0] LEDx
No Error 0 0 0
Open circuit − LEDxR, Short from ANODE to LEDxC 0 1 1
Open circuit − LEDxC to ANODE 1 0 1
Short from LEDxC to Ground 0 1 0
NCV7430
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21
The TH_CONT_STATE[3:0] read only bits represent the degree of current reduction when the thermal control bit
<TH_CONT> is set .
TH_CONT_STATE[3:0] Current in % of Nominal
15 Max ON
14 93.75
13 87.50
12 81.25
11 75.00
10 68.75
9 62.50
8 56.25
7 50.00
6 43.75
5 37.50
4 31.25
3 25.00
2 18.75
1 12.50
0 6.25
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NCV74300V3GEVK

Mfr. #:
Buy NCV74300V3GEVK
Manufacturer:
ON Semiconductor
Description:
LED Lighting Development Tools LIN RGB HIGH CURRENT EVB
Lifecycle:
New from this manufacturer.
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