L99LDLH32 datasheet(46/142 Pages) STMICROELECTRONICS

Part #	L99LDLH32

Description	32-channel LED driver with automotive CAN FD Light interface

PDF	142 Pages

Scroll/Zoom	100%

Manufacturer	STMICROELECTRONICS [STMicroelectronics]

Direct Link	http://www.st.com

Logo

46 / 142 page

Communication interface

L99LDLH32

46/142

DS12879 Rev 6

16 data bytes from this frame (data position is configurable) and update all duty cycle or

current values registers accordingly. The selection between duty cycle or current value

update is done by bit 6 of CAN ID field. The Chain ID and data position of each Responder

is configurable using broadcast initialization frame. Responder ID0 and Responder ID1 of

the same device have to be assigned to different Chain IDs. This means that it is not

possible to update all 32 channels by single broadcast frame.

6.5

Broadcast frames

6.5.1

Frame format

Broadcast frames are transmitted to all Responders in the network. The broadcast frame

contains in its ID the number of the chain that is addressed. Each Responder belonging to

this chain picks its data from the maximum 64 bytes transferred by this frame. Each

L99LDLH32 device can pick 16 bytes of data. The position from where it picks the data is

defined during Chain Initialization.

Figure 18

shows the communication flow of a broadcast frame.

L99LDLH32 Datasheet(PDF) 46 Page - STMicroelectronics